Wilo Rexa UNI Installation And Operating Instructions Manual

· Wilo-Rexa UNI 6082109 • Ed.03/2019-02 en Installation and operating instructions

3 Table of contents 1 General information .................................................................................................................................................................  5 1.1 About these instructions .................................................................................................................................................................................. 5 1.2 Copyright ............................................................................................................................................................................................................ 5 1.3 Subject to change.............................................................................................................................................................................................. 5 1.4 Warranty.............................................................................................................................................................................................................. 5 2 Safety.........................................................................................................................................................................................  5 2.1 Identification of safety instructions................................................................................................................................................................ 5 2.2 Personnel qualifications.................................................................................................................................................................................... 6 2.3 Electrical work .................................................................................................................................................................................................... 6 2.4 Monitoring devices ............................................................................................................................................................................................ 6 2.5 Use in fluids hazardous to health .................................................................................................................................................................... 7 2.6 Transport............................................................................................................................................................................................................. 7 2.7 Installing/dismantling........................................................................................................................................................................................ 7 2.8 During operation................................................................................................................................................................................................ 7 2.9 Maintenance tasks............................................................................................................................................................................................. 8 2.10 Operating fluid ................................................................................................................................................................................................... 8 2.11 Operator responsibilities................................................................................................................................................................................... 8 3 Application/use.........................................................................................................................................................................  8 3.1 Intended use....................................................................................................................................................................................................... 8 3.2 Improper use....................................................................................................................................................................................................... 8 4 Product description..................................................................................................................................................................  9 4.1 Design.................................................................................................................................................................................................................. 9 4.2 Monitoring devices ......................................................................................................................................................................................... 10 4.3 Operating modes............................................................................................................................................................................................. 10 4.4 Operation with frequency converter............................................................................................................................................................ 10 4.5 Operation in an explosive atmosphere........................................................................................................................................................ 10 4.6 Technical data ................................................................................................................................................................................................. 10 4.7 Type key........................................................................................................................................................................................................... 10 4.8 Scope of delivery............................................................................................................................................................................................. 11 4.9 Accessories ...................................................................................................................................................................................................... 11 5 Transportation and storage...................................................................................................................................................  11 5.1 Delivery............................................................................................................................................................................................................. 11 5.2 Transport.......................................................................................................................................................................................................... 11 5.3 Storage ............................................................................................................................................................................................................. 12 6 Installation and electrical connection ..................................................................................................................................  12 6.1 Personnel qualifications................................................................................................................................................................................. 12 6.2 Installation types............................................................................................................................................................................................. 12 6.3 Operator responsibilities................................................................................................................................................................................ 13 6.4 Installation ....................................................................................................................................................................................................... 13 6.5 Electrical connection...................................................................................................................................................................................... 17 7 Commissioning........................................................................................................................................................................  18 7.1 Personnel qualifications................................................................................................................................................................................. 18

7.2 Operator responsibilities................................................................................................................................................................................ 19 7.3 Direction of rotation check (for three-phase current motors only)........................................................................................................  19 7.4 Before switching on........................................................................................................................................................................................ 19 7.5 Switching on and off ...................................................................................................................................................................................... 19 7.6 During operation............................................................................................................................................................................................. 20 8 Shut-down/dismantling.........................................................................................................................................................  20 8.1 Personnel qualifications................................................................................................................................................................................. 20 8.2 Operator responsibilities................................................................................................................................................................................ 20 8.3 Shut-down....................................................................................................................................................................................................... 20 8.4 Removal............................................................................................................................................................................................................ 21 9 Maintenance and repair..........................................................................................................................................................  22 9.1 Personnel qualifications................................................................................................................................................................................. 22 9.2 Operator responsibilities................................................................................................................................................................................ 23 9.3 Operating fluid ................................................................................................................................................................................................ 23 9.4 Maintenance intervals.................................................................................................................................................................................... 23 9.5 Maintenance measures .................................................................................................................................................................................. 23 10 Faults, causes and remedies ..................................................................................................................................................  25 11 Spare parts...............................................................................................................................................................................  27 12 Disposal....................................................................................................................................................................................  27 12.1 Oils and lubricants........................................................................................................................................................................................... 27 12.2 Protective clothing ......................................................................................................................................................................................... 27 12.3 Information on the collection of used electrical and electronic products..............................................................................................  27

5 1 General information 1.1 About these instructions These installation and operating instructions are an integral part of the product. Read these instructions before commencing work and keep them in an accessible place at all times. Strict adherence to these instructions is a precondition for the intended use and correct operation of the product. All information and markings on the product must be observed. The language of the original operating instructions is German. All other languages of these instructions are translations of the ori- ginal operating instructions. 1.2 Copyright These installation and operating instructions have been copy- righted by the manufacturer. Contents of any kind may not be re- produced or distributed, or used for purposes of competition and shared with others. 1.3 Subject to change The manufacturer reserves the right to make technical modifica- tions to the device or individual components. The illustrations used may differ from the original and are intended as an example representation of the device. 1.4 Warranty The specifications in the current “General Terms and Conditions” apply to the warranty and the warranty period. These can be found at www.wilo.com/legal Any deviations must be contractually agreed and shall then be given priority. Claim to warranty If the following points are complied with, the manufacturer is ob- ligated to rectify every qualitative or constructive flaw: ƒ The defects are reported in writing to the manufacturer within the warranty period. ƒ Application according to intended use. ƒ All monitoring devices are connected and tested before com- missioning. Exclusion from liability Exclusion from liability excludes all liability for personal injury, ma- terial damage or financial losses. This exclusion ensues as soon as one of the following applies: ƒ Inadequate configuration due to inadequate or incorrect in- structions by the operator or the client ƒ Non-compliance with installation and operating instructions ƒ Improper use ƒ Incorrect storage or transport ƒ Incorrect installation or dismantling ƒ Insufficient maintenance ƒ Unauthorised repairs ƒ Inadequate construction site ƒ Chemical, electrical or electro-chemical influences ƒ Wear 2 Safety This chapter contains basic information for the individual phases of the life cycle. Failure to observe this information carries the fol- lowing risks: ƒ Injury to persons from electrical, mechanical and bacteriolo- gical factors as well as electromagnetic fields ƒ Environmental damage from discharge of hazardous sub- stances ƒ Property damage ƒ Failure of important functions of the product Failure to observe the information contained herein will result in the loss of claims for damages. The instructions and safety instructions in the other chapters must also be observed! 2.1 Identification of safety instructions These installation and operating instructions set out safety in- structions for preventing personal injury and damage to property. These safety instructions are shown differently: ƒ Safety instructions relating to personal injury start with a signal word, are preceded by a corresponding symbol and are shaded in grey. DANGER Type and source of the danger! Consequences of the danger and instructions for avoidance. ƒ Safety instructions relating to property damage start with a signal word and are displayed without a symbol. CAUTION Type and source of the danger! Consequences or information. Signal words ƒ DANGER! Failure to observe the safety instructions will result in serious injuries or death! ƒ WARNING! Failure to follow the instructions can lead to (serious) injuries! ƒ CAUTION! Failure to follow the instructions can lead to property damage and a possible total loss.

ƒ NOTICE! Useful information on handling the product Symbols These instructions use the following symbols: Danger of electric voltage Danger of bacterial infection Danger of explosion General warning symbols Warning of crushing Warning of cutting injuries Warning of hot surfaces Warning of high pressure Warning of suspended loads Personal protective equipment: Wear a safety helmet Personal protective equipment: Wear foot protection Personal protective equipment: Wear hand protec- tion Personal protective equipment: Wear mouth protec- tion Personal protective equipment: Wear safety goggles Autonomous work prohibited! A second person must be present. Useful information Markups ‡ Prerequisite 1. Work step/list ⇒Notice/instructions ▶Result 2.2 Personnel qualifications Personnel must: ƒ Be instructed about locally applicable regulations governing accident prevention. ƒ Have read and understood the installation and operating in- structions. Personnel must have the following qualifications. ƒ Electrical work: A qualified electrician must carry out the elec- trical work. ƒ Installation/dismantling: The technician must be trained in the use of the necessary tools and fixation materials for the relev- ant construction site. ƒ Maintenance tasks: The technician must be familiar with the use of operating fluids and their disposal. In addition, the technician must have basic knowledge of mechanical engin- eering. Definition of “qualified electrician” A qualified electrician is a person with appropriate technical edu- cation, knowledge and experience who can identify and prevent electrical hazards. 2.3 Electrical work ƒ Electrical work must be carried out by a qualified electrician. ƒ Before commencing work, disconnect the product from the mains and safeguard it from being switched on again. ƒ Observe applicable local regulations when connecting to the mains power supply. ƒ Adhere to the requirements of the local energy supply com- pany. ƒ Train personnel in connecting electrics. ƒ Instruct personnel in options for switching off the device. ƒ Comply with the technical specifications contained in these installation and operating instructions and on the rating plate. ƒ Earth the device. ƒ Observe regulations for connection to the electrical switching system. ƒ Comply with the specifications on electro-magnetic compat- ibility when using electronic start-up controllers (e.g. soft starter or frequency converter). If required, take into account special measures (e.g. shielded cables, filters etc.). ƒ Replace defective connection cables. Contact customer ser- vice. 2.4 Monitoring devices The following monitoring devices must be provided on-site: Circuit breaker The size and switching characteristics of the circuit breakers must conform to the rated current of the connected product. Observe local regulations. Motor protection switch Make provision for an on-site motor protection switch for devices without a plug! The minimum requirement is a thermal relay/motor protection switch with temperature compensation,

7 differential triggering and anti-reactivation device in accordance with the local regulations. In case of sensitive mains, make provi- sion for the installation on-site of other protective equipment (e.g. overvoltage, undervoltage or phase failure relay, etc.). Residual-current device (RCD) Comply with the regulations of the local energy supply company! The use of a residual-current device is recommended. If persons come into contact with the device and conductive flu- ids, secure the connection with a residual-current device (RCD). 2.5 Use in fluids hazardous to health There is a danger of bacterial infection when using the device in fluids hazardous to health! Thoroughly clean and disinfect the device after dismantling and prior to further use. The operator must ensure the following: ƒ The following protective equipment is provided and worn when cleaning the device: – Closed safety goggles – Breathing mask – Protective gloves ƒ All persons are informed about the fluid, the associated danger and its correct handling! 2.6 Transport ƒ The following protective equipment must be worn: – Safety shoes – Safety helmet (when using lifting equipment) ƒ Always hold the handle to transport the device. Never pull the power supply cable! ƒ Only use legally specified and approved lifting gear. ƒ Select the lifting gear based on the existing conditions (weather, attachment point, load, etc.). ƒ Always attach the lifting gear to the attachment points (handle or lifting eyelet). ƒ The stability of the lifting equipment must be ensured during operation. ƒ When using lifting equipment, a second person must be present to coordinate the procedure if required (e.g. if the op- erator’s field of vision is blocked). ƒ Persons are not permitted to stand beneath suspended loads. Do not carry suspended loads over workplaces where people are present. 2.7 Installing/dismantling ƒ Wear the following protective equipment: – Safety shoes – Safety gloves for protection against cuts – Safety helmet (when using lifting equipment) ƒ Locally applicable laws and regulations for work safety and ac- cident prevention must be complied with. ƒ Disconnect the device from the mains and secure it against be- ing switched on again without authorisation. ƒ All rotating parts must be at a standstill. ƒ Provide adequate aeration in closed rooms. ƒ When working in chambers and closed spaces, a second person must be present for safety reasons. ƒ Take immediate countermeasures if there is a build-up of toxic or suffocating gases! ƒ Clean the device thoroughly. Disinfect devices that are used in fluids hazardous to health! ƒ Make sure that there is no risk of explosion when carrying out any type of welding work or work with electrical devices. 2.8 During operation ƒ Wear the following protective equipment: – Safety shoes – Ear protection (in accordance with the notice of the work regulations) ƒ Work area of the device is not a recreational area. No persons are allowed in the work area during operation. ƒ The operator must immediately report any faults or irregularit- ies to their line manager. ƒ If safety-endangering defects occur, the operator must imme- diately deactivate the device: – Malfunction of the safety and monitoring device – Damage to the housing parts – Damage to the electrical equipment ƒ Never reach into the suction port. The rotating parts can crush and sever limbs. ƒ If the motor emerges during operation, the motor housing can heat up to above 40 °C (104 °F). ƒ Open all gate valves in the piping on the suction and pressure side. ƒ Ensure minimum water submersion through dry-running pro- tection. ƒ Under normal operating conditions, the sound pressure level of the device is below 85 dB(A). However, the actual sound-pres- sure level depends on several factors: – Installation depth – Installation – Fixation of accessories and pipe – Duty point – Immersion depth ƒ If the device is operated under normal operating conditions, the operator must measure the sound pressure. Ear protection

must be worn for sound pressure levels of 85 dB(A) and above and this must be noted in the work regulations! 2.9 Maintenance tasks ƒ Wear the following protective equipment: – Closed safety goggles – Safety shoes – Safety gloves for protection against cuts ƒ Always carry out maintenance tasks outside the operating space/installation site. ƒ Only carry out maintenance tasks mentioned in these installa- tion and operating instructions. ƒ Only original parts from the manufacturer may be used for maintenance and repairs. Use of parts other than the original parts releases the manufacturer from any liability. ƒ Collect any leakage of fluid and operating fluid immediately and dispose of it according to the locally applicable guidelines. ƒ Store tools at the designated locations. ƒ After completing work, reattach all safety and monitoring devices and check that they function properly. Changing operating fluid In case of a defect, a pressure of several bar can build up in the motor! This pressure escapes when the screw plugs are opened. If screw plugs are opened without due caution, they can be ejec- ted at high speed! To avoid injuries, observe the following in- structions: ƒ Adhere to the prescribed sequence of work steps. ƒ Unscrew the screw plugs slowly, but never unscrew them completely. As soon as the pressure escapes (audible whistling or hissing of air), stop turning the screw plug any further. WARNING! Hot operating fluids can also spray out when the pressure is escaping. This can result in scalding! To avoid in- juries, allow the motor to cool down to the ambient tem- perature before carrying out any work! ƒ When the pressure has completely dissipated, fully unscrew the screw plug. 2.10 Operating fluid In the sealing chamber, the motor is filled with white oil. Operat- ing fluid must be replaced during regular maintenance work and disposed off according to the local guidelines. 2.11 Operator responsibilities ƒ Installation and operating instructions must be in a language which the personnel can understand. ƒ Make sure that the personnel is relevantly trained for the spe- cified work. ƒ Provide the necessary protective equipment and make sure that the personnel wears it. ƒ Safety and information signs mounted on the device must be always legible. ƒ Train the personnel pertaining to the functioning of the sys- tem. ƒ Eliminate risk from electrical current. ƒ Equip hazardous components inside the system with an on- site guard. ƒ Identify and cordon off the work area. ƒ To ensure safe working practice, define the responsibilities of the employees. Children and persons younger than 16 years or with reduced physical, sensory or mental capacities or limited experience are prohibited from handling the product! A technician must super- vise persons younger than 18 years! 3 Application/use 3.1 Intended use The submersible pumps are suitable for pumping: ƒ Sewage containing faeces ƒ Wastewater (with small amounts of sand and gravel) ƒ Fluids with up to max. 8 % dry matter ƒ Fluids with a pH value of > 4.5 The submersible pumps in material version “B” are additionally suitable for pumping: ƒ Lake- and seawater with a temperature of max. 20 °C ƒ Swimming pool water with a chloride content of max. 400 mg/ l ƒ Aggressive fluids (condensate, distilled water) with a pH value of > 3.5 3.2 Improper use DANGER Explosion due to pumping of explosive fluids! Pumping of highly flammable and explosive fluids (gasoline, kerosene, etc.) in pure form is strictly pro- hibited. There is a risk of fatal injury due to explosion! The pumps are not designed for these fluids. DANGER Danger due to fluids hazardous to health! If the pump is used in fluids hazardous to health, de- contaminate the pump after dismantling and before carrying out any other work! There is a risk of fatal injury! Observe the specifications in the work regula- tions! The operator must make sure that the person- nel have received and read the work regulations!

9 CAUTION Use in biogas applications forbidden! The fluids in biogas applications are highly aggressive. These fluids will destroy the pump. Use with these fluids is strictly forbidden! The submersible pumps must not be used for pumping of: ƒ Drinking water ƒ Fluids containing hard components (such as stones, wood, metal, etc.) ƒ Fluids containing high quantities of abrasive contents (e.g. sand, gravel). Intended use requires compliance with this manual. Any other use is regarded as non-compliant with the intended use. 4 Product description 4.1 Design Submersible sewage pump as a submersible monobloc unit for in- termittent operation for wet well installation. 4 5 6 1 2 3 Fig. 1: Overview 1 Handle/attachment point 2 Motor housing 3 Hydraulics housing 4 Pressure port 5 Pump support foot, integrated in hydraulics housing 6 Power supply cable 4.1.1 Hydraulics Rotodynamic hydraulics with vortex impeller and horizontal flange connection on the pressure side. The screwed connection is in- tegrated in the pressure port. The hydraulics are not self-priming, in other words, the fluid must flow in either automatically or with supply pressure. NOTICE Combined connection for DN 50 and DN 65! The Rexa UNI V06 is equipped with a DN 50/65 com- bined connection. The factory setting of the connec- tion is DN 65. To use the pump with a DN 50 connec- tion, press the nuts in the flange inwards onto the small hole circle. The flange can be reset to DN 65 at any time! 4.1.2 Motor The drive versions used are single-phase current and three-phase current surface-cooled motors. The motor is cooled by the fluid around it. The waste heat is transferred directly to the fluid via the motor housing. The motor may emerge during operation. With single-phase current motors, the operating capacitor is in- tegrated in the motor. The connection cable is available in the fol- lowing versions: ƒ Single-phase current version: – With shockproof plug – With shockproof plug and fitted with a float switch ƒ Three-phase current version: – With bare cable end – With CEE plug and fitted with a float switch 4.1.3 Seal Different designs are used for the seal to the fluid and the motor compartment: ƒ Rexa UNI V05: A rotary shaft seal is used on the motor side, a mechanical seal is used on the fluid side. ƒ Rexa UNI V06: A mechanical seal is used on the motor side and the fluid side. The sealing chamber between both seals is filled with medical white oil. 4.1.4 Material ƒ Pump housing: PP-GF30 ƒ Impeller: PP-GF30 ƒ Motor housing: 1.4301 (AISI 304) ƒ Shaft: 1.4401 (AISI 316) ƒ Seal on the fluid side: SiC/SiC ƒ Seal on the motor side: NBR (nitrile) (V05), C/Cr (V06) ƒ Static seal: NBR (nitrile) NOTICE! In material version “B”, all parts that come in contact with the fluid are made of stainless steel 1.4401 (AISI 316).

4.1.5 Fitted accessories Float switch In the “A” version the pump is equipped with a float switch. De- pending on the fill level, it is possible to switch the pump on and off automatically, by using the float switch. Plug In the “P” and “A” version, a shockproof plug is attached for single-phase AC motors and a CEE plug is attached for three- phase current motors. The plug is designed for use in commer- cially available shock-proof or CEE sockets and is not overflow- proof. 4.2 Monitoring devices Monitoring of motor winding The thermal motor monitoring protects the motor winding from overheating. Temperature limiter with bimetallic strip is fitted as standard. Thermal motor monitoring is self-switching for single-phase cur- rent motors, i.e. if the motor is switched off due to overheating and then cools down, it is automatically switched on again. For three-phase current motors, the thermal motor monitoring must be connected in the switchgear or plug. 4.3 Operating modes Operating mode S1: Continuous duty The pump can operate continuously at the rated load without ex- ceeding the permissible temperature. Operating mode S2: Short-time duty The maximum operating period is specified in minutes, e.g. S2-15. The pause must last until the machine temperature no longer differs from the temperature of the coolant by more than 2 K. Operating mode S3: Intermittent periodic duty This operating mode defines a switching cycle in a combination of periods of operation and standstill. Specified value (e.g. S3 25 %) relates to the operating time. The switching cycle has a duration of 10 min. If two values (e.g. S3 25 %/120 s) are specified, the first value relates to the operating time. The second value specifies the max. period of the switching cycle. 4.4 Operation with frequency converter Operation on the frequency converter is not permitted. 4.5 Operation in an explosive atmosphere Operation in an explosive atmosphere is not permitted. 4.6 Technical data General Date of manufacture [MFY] See rating plate Mains connection [U/f] See rating plate Power consumption [P1] See rating plate Rated power [P2] See rating plate Max. delivery head [H] See rating plate Max. volume flow [Q] See rating plate Activation type [AT] See rating plate Fluid temperature [t] 3…40 °C Protection class IP68 Insulation class [Cl.] F Speed [n] See rating plate Max. switching fre- quency 30/h Max. immersion depth [8] See rating plate Cable length (standard version) 10 m Explosion protection - Operating modes Immersed [OTs] S1 Non-immersed [OTe] S2-15, S3 10%* Pressure connection UNI V05... DN 50, PN 10 UNI V06... DN 50/65, PN 10 * Operating mode S3 25 % is permitted if the necessary motor cooling is guaranteed before the motor is switched on again! To ensure the required cooling, the motor must be completely im- mersed for at least 1 min. Statement of date of manufacture The date of manufacture is stated in accordance with ISO 8601: JJJJWww ƒ JJJJ = year ƒ W = abbreviation for week ƒ ww = calendar week 4.7 Type key Example: Wilo-Rexa UNI V05B/T06-540/P UNI Series V Impeller shape = vortex impeller 05 Nominal diameter of pressure connection

en Installation and operating instructions Wilo-Rexa UNI 11 Example: Wilo-Rexa UNI V05B/T06-540/P B Material version - n/a = standard version - B = version in V4A T Mains connection version: M = 1~, T = 3~ 06 /10 = rated power P2 in kW 5 Mains connection frequency: 5 = 50 Hz, 6 = 60 Hz 40 Key for rated voltage P Additional electrical equipment: n/a = with bare cable end A = with float switch and plug P = with plug 4.8 Scope of delivery ƒ Pump with 10 m (33 ft) cable ƒ Single-phase current version with – Shockproof plug – Float switch and shockproof plug ƒ Three-phase current version with – Bare cable end – Float switch and CEE plug ƒ Installation and operating instructions 4.9 Accessories ƒ Cable lengths in fixed length increments of 10 m (33 ft) up to max. 30 m (99 ft) in single-phase current version or max. 50 m (164 ft) in three-phase current version ƒ Suspension unit ƒ Level control devices ƒ Fixation accessories and chains ƒ Switchgear, relays and plugs 5 Transportation and storage 5.1 Delivery After receiving the shipment, this must be checked immediately for defects (damage, completeness). Defects must be noted on the freight documentation! Furthermore, defects must be notified to the transport company or the manufacturer immediately on the day of receipt of shipment. Subsequently notified defects can no longer be asserted. 5.2 Transport WARNING Standing under suspended loads! Never allow anyone to stand under suspended loads! Danger of (serious) injuries caused by falling parts. Loads may not be carried over work places where people are present! WARNING Head and foot injuries due to a lack of protect- ive equipment! Danger of (serious) injuries during work. Wear the fol- lowing protective equipment: • Safety shoes • Safety helmet must be worn if lifting equipment are used! NOTICE Use only properly functioning lifting equip- ment! Use only properly functioning lifting equipment to lift and lower the pump. Ensure that the pump does not become jammed during lifting and lowering. Do not exceed the maximum bearing capacity of the lifting equipment! Check that lifting equipment is function- ing properly before use! CAUTION Soaked packaging may tear! The product may fall on the ground if unprotected and may be damaged. Lift wet packaging carefully and replace it immediately! Only remove the outer packaging at the place of utilisation to en- sure that the pump is not damaged during transport. Use tear- proof plastic sacks of sufficient size to package used pumps for transport in a leak-proof manner. The following points must also be observed:

12 WILO SE 2019-02 Fig. 2: Attachment point ƒ Adhere to the applicable national safety regulations. ƒ Use legally specified and approved lifting gear. ƒ Select the lifting gear based on the existing conditions (weather, attachment point, load, etc.). ƒ Only attach the lifting gear to the attachment point. Fix with a shackle. ƒ Use lifting equipment with sufficient bearing capacity. ƒ The stability of the lifting equipment must be ensured during operation. ƒ When using lifting equipment, a second person must be present to coordinate the procedure if required (e.g. if the op- erator’s field of vision is blocked). 5.3 Storage DANGER Danger due to fluids hazardous to health! If the pump is used in fluids hazardous to health, de- contaminate the pump after dismantling and before carrying out any other work! There is a risk of fatal injury! Observe the specifications in the work regula- tions! The operator must make sure that the person- nel have received and read the work regulations! WARNING Sharp edges on the impeller and suction port! Sharp edges can form on the impeller and suction port. There is danger of limbs being severed! Pro- tective gloves must be worn to protect from cuts. CAUTION Total damage due to moisture ingress Moisture ingress in the power supply cable damages the power supply cable and the pump! Never im- merse the end of the power supply cable in a fluid and firmly seal it during storage. Newly supplied pumps can be stored for one year. Contact cus- tomer service to store the pump for more than one year. The following must be observed for storage: ƒ Place the pump upright (vertical) on a firm bearing surface and secure it against slipping and falling over! ƒ The max. storage temperature is -15 °C to +60 °C (5 °F to 140 °F) at a max. relative humidity of 90 %, non-condensing. Frost-proof storage at a temperature of 5 °C to 25 °C (41 °F to 77 °F) with relative humidity of 40 % to 50 % is recommen- ded. ƒ Do not store the pump in rooms in which welding work is car- ried out. The resulting gases or radiation can corrode the elastomer parts and coatings. ƒ Seal the suction and pressure connection tightly. ƒ Protect power supply cables against kinking and damage. ƒ Protect the pump from direct sunlight and heat. Extreme heat can cause damage to the impellers and the coating! ƒ Impellers must be turned by 180 ° at regular intervals (3 –  6 months). This prevents locking of the bearings and renews the lubrication film of the mechanical seal. WARNING! There is a risk of injury due to sharp edges on the impeller and suction port! ƒ Elastomer parts and the coating are subject to natural brittle- ness. Contact customer service if the pump must be stored for more than 6 months. After storage, remove any dust and oil from the pump and check the coating for damage. Repair damaged coatings before further use. 6 Installation and electrical connection 6.1 Personnel qualifications ƒ Electrical work: A qualified electrician must carry out the elec- trical work. ƒ Installation/dismantling: The technician must be trained in the use of the necessary tools and fixation materials for the relev- ant construction site. 6.2 Installation types ƒ Vertical stationary wet well installation with suspension unit ƒ Vertical portable wet well installation with pump support foot The following installation types are not permitted:

en Installation and operating instructions Wilo-Rexa UNI 13 ƒ Dry well installation ƒ Horizontal installation 6.3 Operator responsibilities ƒ Observe locally applicable accident prevention and safety reg- ulations of trade associations. ƒ Observe all regulations for working with heavy loads and under suspended loads. ƒ Provide protective equipment and ensure that the protective equipment is worn by personnel. ƒ Observe local sewage technology regulations for the operation of sewage systems. ƒ Avoid pressure surges! Pressure surges can occur in long pressure pipes with steep terrain. These pressure surges can lead to the destruction of the pump! ƒ Ensure the cooling time of the motor depending on the operat- ing conditions and the size of the pump chamber. ƒ Structural components and foundations must be of sufficient stability in order to allow the device to be fixed securely and functionally. The operator is responsible for the provision and suitability of the structural component/foundation! ƒ Check that the available consulting documents (installation plans, design of the operating space, inflow conditions) are complete and correct. 6.4 Installation DANGER Risk of fatal injury due to dangerous lone working practices! Work in chambers and narrow rooms as well as work involving risk of falling are dangerous work. Such work may not be carried out autonomously! A second person must be present for safety reasons. WARNING Hand and foot injuries due to lack of protect- ive equipment! Danger of (serious) injuries during work. Wear the fol- lowing protective equipment: • Safety gloves for protection against cuts • Safety shoes • Safety helmet must be worn if lifting equipment are used! NOTICE Use only properly functioning lifting equip- ment! Use only properly functioning lifting equipment to lift and lower the pump. Ensure that the pump does not become jammed during lifting and lowering. Do not exceed the maximum bearing capacity of the lifting equipment! Check that lifting equipment is function- ing properly before use! NOTICE Emerging of the motor during operation If the motor emerges during operation, observe the instructions for “non-immersed operating mode”! To ensure the necessary cooling of the motor for con- tinuous duty, the motor must be completely im- mersed before re-activation! ƒ Prepare operating space/installation location as follows: – Clean, free of coarse solids – Dry well – Frost-free – Decontaminated ƒ Take immediate countermeasures if there is a build-up of toxic or suffocating gases! ƒ Use the handle for lifting, lowering and transporting the pump. Never carry or drag the pump by the power supply cable! ƒ It must be possible to attach lifting equipment safely. The storage place and the operating space/installation site must be accessible with the lifting equipment. The set-down location must have a solid bearing surface. ƒ Attach the lifting gear to the handle using a shackle. Only use lifting gear which has been technically approved. ƒ The routed power supply cables must allow safe operation. Check whether the cable cross-section and the cable length are sufficient for the selected installation type. ƒ The corresponding IP class must be observed when using switchgear. Install the switchgear overflow-proof and outside potentially explosive areas! ƒ Avoid air intake into the fluid, use baffles or deflector plates for the inlet. Air which has entered the system can collect in the pipe system and lead to impermissible operating conditions. Air pockets must be removed via ventilation systems! ƒ A dry run of the pump is prohibited! Avoid air pockets in the hydraulics housing or in the pipe system. Ensure the water level never falls below the minimum. The installation of a dry-run- ning protection is recommended!

14 WILO SE 2019-02 6.4.1 Indications for double pump operation If several pumps are used in an operating space, minimum dis- tances between the pumps and the wall must be complied with. Here there is a difference in the distances depending on the type of system: Alternating operation or parallel operation. d A2 A1 Fig. 3: Minimum distances d Diameter hydraulics housing A1 Minimum distance from the wall: - alternating operation: min. 0.3 × d - parallel operation: min. 1 × d A2 Distance to pressure pipes - alternating operation: min. 1.5 × d - parallel operation: min. 2 × d 6.4.2 Note on DN 50/65 combination flange The Rexa UNI V06... is equipped with a DN 50/65 combination flange. The nuts on the combination flange are factory-set to the DN 65 flange. For use with a DN 50 flange, adjust the nuts at the flange. The flange can be reset to DN 65 at any time! Fig. 4: Adjust combination flange ‡ No accessories mounted on flange. ‡ Nut is freely accessible. 1. Push the nut inwards onto the small hole circle using a screwdriver. ▶The flange connection is reset to DN 50. 6.4.3 Maintenance tasks After a storage period of more than 6 months, check the oil in the sealing chamber prior to installation: 1 Fig. 5: Check the oil 1 Screw plug sealing chamber ‡ Pump is not installed. ‡ Pump is not connected to the mains. ‡ Protective equipment has been put on! 1. Place the pump horizontally on a firm surface. The screw plug points upwards. WARNING! Risk of hands being crushed. Ensure that the pump cannot fall over or slip away! 2. Unscrew the screw plug. 3. Place a suitable tank to collect the operating fluid. 4. Drain the operating fluid: Rotate the pump until the opening points downwards. 5. Check the operating fluid: ⇒If the operating fluid is clear, reuse operating fluid. ⇒If the operating fluid is contaminated (black), fill with new operating fluid. Dispose of operating fluid in accordance with the local regulations! ⇒Notify customer service if an operating fluid con- tains metal chips! 6. Pour in operating fluid: Rotate the pump until the open- ing points upwards. Fill-in the operating fluid into the opening. ⇒Comply with the specifications for operating fluid locations and quantity! When recycling the operat- ing fluid, check the quantity and if required adjust it! 7. Clean the screw plug, replace the seal ring and screw it back in. Max. tightening torque: 8 Nm (5.9 ft lb)!

en Installation and operating instructions Wilo-Rexa UNI 15 6.4.4 Stationary wet well installation NOTICE Pumping problems due to water level being too low The hydraulics are self-venting. Smaller air cushions are resorbed during pumping. If the fluid is lowered too much, separation of the volume flow may occur. The minimum permissible water level must reach the upper edge of the hydraulics housing! The pump is installed in the fluid for the wet well installation. For this, a suspension unit must be installed in the chamber. On the pressure side, the on-site pipe system is connected to the sus- pension unit and on the suction side to the pump. The connected pipe system must be self-supporting. The suspension unit must not support the pipe system! CAUTION! If the motor emerges during operation, observe the operating mode for non-immersed operation (S2-15, S3 10 %*)! * Operating mode S3 25 % is permitted if the necessary motor cooling is guaranteed before the motor is switched on again! To ensure the required cooling, the motor must be completely im- mersed for at least 1 min. Work steps 1 5 6 S1 S2/S3 3 4 2 Fig. 6: Wet well installation, stationary 1 Suspension unit 2 Non-return valve 3 Stop valve 4 Guide pipe (provided by the customer) 5 Lifting equipment 6 Attachment point for the lifting equipment CAUTION Damage to the pump due to incorrect installa- tion Observe the following points during the installation of the pump: • Observe the max. permissible tightening torque: 15 Nm (11 ft·lb) (V05) or 25 Nm (18 ft·lb) (V06) • Do not insert an additional gasket between the flange and the accessories! A gasket is mounted on the pump flange! • Only use accessories with a flange shape in ac- cordance with EN 1092-2, type A. The use of other flange shapes is not permitted! ‡ Operating space/installation location is prepared for the installation. ‡ Suspension unit and pipe system were installed. ‡ Pump is prepared for operation on the suspension unit. 1. Use a shackle to attach the lifting equipment to the at- tachment point of the pump. 2. Lift the pump, swivel it above the chamber opening and slowly lower the guide claw onto the guide pipe. 3. Lower the pump until it sets on the suspension unit and is connected automatically. CAUTION! Hold the power supply cables slightly taut when lowering the pump! 4. Loosen the lifting equipment from the lifting gear and secure it at the chamber outlet against falling. 5. Have the power supply cables routed into the chamber by a qualified electrician and route it outside properly from the chamber. ▶The pump is installed, the qualified electrician can make the electrical connection. 6.4.5 Portable wet well installation WARNING Risk of burns from hot surfaces! Motor housing can become hot during operation. It may cause burns. Allow the pump to cool down at ambient temperature after switching it off!

16 WILO SE 2019-02 WARNING Separation of pressure hose! Separation or movement of the pressure hose can lead to (serious) injuries. Securely attach the pressure hose to the outlet! Prevent buckling of the pressure hose. NOTICE Pumping problems due to water level being too low The hydraulics are self-venting. Smaller air cushions are resorbed during pumping. If the fluid is lowered too much, separation of the volume flow may occur. The minimum permissible water level must reach the upper edge of the hydraulics housing! For portable installation, the pump is equipped with a pump sup- port foot. The pump support foot ensures minimum ground clearance in the suction area and enables secure footing if placed on a solid bearing surface. In this installation type, the pump can be installed anywhere in the operating space/installation site. A hard base must be used at the installation location to prevent sinking in case of soft bearing surfaces. A pressure hose is con- nected on the pressure side. CAUTION! If the motor emerges during operation, observe the operating mode for non-immersed operation (S2-15, S3 10 %*)! * Operating mode S3 25 % is permitted if the necessary motor cooling is guaranteed before the motor is switched on again! To ensure the required cooling, the motor must be completely im- mersed for at least 1 min. Work steps 1 2 3 4 5 S1 S2, S3 6 Fig. 7: Wet well installation, portable 1 Pump with integrated pump support foot 2 Pipe elbow with hose connection or Storz pipe coupling 3 Storz hose coupling 4 Pressure hose 5 Attachment point 6 Lifting equipment CAUTION Damage to the pump due to incorrect install- ation Observe the following points during the installation of the pump: • Observe the max. permissible tightening torque: 15 Nm (11 ft·lb) (V05) or 25 Nm (18 ft·lb) (V06) • Do not insert an additional gasket between the flange and the accessories! A gasket is mounted on the pump flange! • Only use accessories with a flange shape in ac- cordance with EN 1092-2, type A. The use of other flange shapes is not permitted! ‡ Pressure connection prepared: Pipe elbow with hose connection or pipe elbow with Storz coupling mounted. 1. Use a shackle to attach the lifting equipment to the at- tachment point of the pump. 2. Lift the pump and lower it at the intended location (chamber, pit). 3. Place the pump on a solid bearing surface. CAU- TION! Sinking must be prevented! 4. Lay the pressure hose and fasten it to a certain point (e.g. drainage). DANGER! Separation or movement of the pressure hose can lead to (serious) injuries! Se- curely attach the pressure hose to the outlet. 5. Lay the power supply cable properly. CAUTION! Do not damage the power supply cable! ▶The pump is installed, the qualified electrician can make the electrical connection. 6.4.6 Level control With a level control device, the current fill levels are determined and the pump is switched on and off automatically depending on the fill levels. Fill levels are recorded by using different sensor types (float switches, pressure and ultrasound measurements or electrodes). The following must be observed when using a level control device: ƒ Float switches can move freely! ƒ The water level must not fall below the minimum permissible! ƒ The maximum switching frequency must not be exceeded!

en Installation and operating instructions Wilo-Rexa UNI 17 ƒ If the fill levels fluctuate strongly, a level control with two measuring points is recommended. This makes it possible to achieve larger differential gaps. Use of attached float switch The “A” version is equipped with a float switch. The pump is switched on and off depending on the fill level. The switching level is determined by the cable length of the float switch. Use of on-site level controls When using an on-site level control device, refer to the manufac- turer’s own installation and operating instructions for specifica- tions on the installation. 6.4.7 Dry-running protection Dry-running protection must prevent the pump from operating without fluid and air from entering the hydraulics. The minimum permissible fill level must be determined with the help of a signal transmitter. Once the specified limit value is reached, the pump must be deactivated with an appropriate signal. Dry-running pro- tection can expand the available level controls by an additional measuring point or function as an independent switch-off device. Depending on the system security, the pump can be restarted au- tomatically or manually. Installation of dry-running protection is recommended for optimum operational reliability. 6.5 Electrical connection DANGER Risk of death due to electrocution! Improper conduct when carrying out electrical work can lead to death due to electric shock! Electrical work must be carried out by a qualified electrician in accordance with the locally applicable regulations. ƒ The mains connection must match the specifications on the rating plate. ƒ Power supply on mains side for three-phase current motors with clockwise rotating field. ƒ Lay the connection cable in accordance with the locally applic- able regulations and connect it according to the wire assign- ment. ƒ Connect the monitoring devices and check their function. ƒ Earth the device properly in accordance with applicable local regulations. 6.5.1 Fuse on mains side Circuit breaker The size and switching characteristics of the circuit breakers must conform to the rated current of the connected product. Observe local regulations. Motor protection switch Make provision for an on-site motor protection switch for devices without a plug! The minimum requirement is a thermal relay/mo- tor protection switch with temperature compensation, differential triggering and anti-reactivation device in accordance with the local regulations. In case of sensitive mains, make provision for the installation on-site of other protective equipment (e.g. over- voltage, undervoltage or phase failure relay, etc.). Residual-current device (RCD) Comply with the regulations of the local energy supply company! The use of a residual-current device is recommended. If persons come into contact with the device and conductive flu- ids, secure the connection with a residual-current device (RCD). 6.5.2 Maintenance tasks Carry out the following maintenance tasks prior to installation: ƒ Check the insulation resistance of the motor winding. ƒ Test the resistor of the temperature sensor. If the measured values differ from the specifications, moisture may have penetrated into the motor or the power supply cable or the monitoring device is defective. Contact customer service in the event of a fault. 6.5.2.1 Checking the insulation resistance of the motor wind- ing Use an insulation tester to measure the insulation resistance (measuring voltage = 1000 V). Observe the following values: ƒ At the time of initial commissioning: Insulation resistance may not be less than 20 MΩ. ƒ For further measurements: Value must be greater than 2 MΩ. NOTICE! For motors with an integrated capacitor, short-circuit the windings prior to checking! 6.5.2.2 Test the resistor of the temperature sensor Measure the resistor of the temperature sensors with an ohm- meter. The bimetallic strips must have a measured value of 0 Ohm (passage). 6.5.3 Connection of the single-phase current motor U1/Z1 bn U2 bu Cr M 1~ gn-ye L N PE Fig. 8: Connection diagram single-phase current motor

Wire colour Terminal Brown (bn) L Blue (bu) N Green/yellow (gn-ye) Earth The single-phase current version is equipped with a shockproof plug. The connection to the mains is established by inserting the plug into a socket. The plug is not overflow-proof. Install the socket so that it is overflow-proof! Observe the information on the protection class (IP) of the plug. DANGER! If the pump is connected directly to the switchgear, dismantle the plug and arrange for the electrical connection to be carried out by a qualified electrician! 6.5.4 Three-phase current motor connection W 5 1 2 V 4 U 3 M 3~ gn-ye L3 L2 21 20 L1 PE 250 V (AC); 2,5 A; cos φ = 1 Fig. 9: Connection diagram three-phase current motor Wire number Designation Terminal 1 20 WSK 2 21 WSK 3 U L1 4 V L2 5 W L3 Green/yellow (gn-ye) Earth PE For three-phase current motors, a clockwise rotating field must be available. The three-phase current version is equipped with a CEE plug or with a bare cable end: ƒ If a CEE plug is supplied, connection to the mains is estab- lished by inserting the plug into a socket. The plug is not overflow-proof. Install the socket so that it is overflow- proof! Observe the information on the protection class (IP) of the plug. ƒ If there is a bare cable-end, the pump must be connected dir- ectly to the switchgear. DANGER! If the pump is connected directly to the switchgear, arrange for the electrical con- nection to be carried out by a qualified electrician! 6.5.5 Monitoring device connection All monitoring device must be connected! 6.5.5.1 Monitoring of motor winding Single-phase current motor Thermal motor monitoring is self-switching for single-phase cur- rent motors. The monitoring function is always active and does not need to be connected separately. Three-phase current motor with bimetallic strip Bimetallic strips are directly connected to the switchgear or via an evaluation relay. Connection values: max. 250 V (AC), 2.5 A, cos φ = 1 When the threshold is reached, deactivation must take place. In the version with an attached plug, the thermal motor monitor- ing is pre-wired and set to the correct value in the plug. 6.5.6 Motor protection adjustment Motor protection must be set depending on the selected activa- tion type. 6.5.6.1 Direct activation At full load, set the motor protection switch to the rated current (see rating plate). At partial load, it is recommended to set the motor protection switch 5 % above the current measured at the duty point. 6.5.6.2 Soft starter At full load, set the motor protection switch to the rated current (see rating plate). At partial load, it is recommended to set the motor protection switch 5 % above the current measured at the duty point. The following points must also be observed: ƒ Power consumption must always be below the rated current. ƒ Complete starting and stopping within 30 s. ƒ To avoid power dissipation, bypass the electronic starter (soft start) once normal operation is reached. 6.5.7 Operation with frequency converter Operation on the frequency converter is not permitted. 7 Commissioning WARNING Foot injuries due to a lack of protective equipment! Danger of (serious) injuries during work. Wear safety shoes! 7.1 Personnel qualifications ƒ Electrical work: A qualified electrician must carry out the elec- trical work.

19 ƒ Operation/control: Operating personnel must be instructed in the functioning of the complete system. 7.2 Operator responsibilities ƒ Providing installation and operating instructions by the pump or at a place specially reserved for it. ƒ Making the installation and operating instructions available in the language of the personnel. ƒ Making sure that the installation and operating instructions are read and understood by all personnel. ƒ All safety devices and emergency cut-outs on the system-side must be active and checked to ensure that they work properly. ƒ The pump is suitable for use under the specified operating conditions. 7.3 Direction of rotation check (for three-phase current motors only) The pump is factory-checked and adjusted to the correct direc- tion of rotation for a clockwise rotating field. Connection is made in accordance with the specifications in chapter “Electrical con- nection”. Direction of rotation check A qualified electrician checks the rotating field at the mains con- nection with a rotating field-test device. For the correct direction of rotation, a clockwise rotating field must be available at the mains connection. The pump is not approved for operation with a counter-clockwise rotating field! CAUTION! If the direction of rotation is checked with a test run, comply with the ambient and operating conditions! Incorrect direction of rotation If the direction of rotation is incorrect, change the connection as follows: ƒ Swap two phases for motors with direct starting. ƒ Swap the connections of two windings (e.g. U1/V1 and U2/V2) for star-delta activation motors. 7.4 Before switching on Check the following prior to activation: ƒ Check whether the device has been installed properly and in accordance with the locally applicable regulations: – Has the pump been earthed? – Layout of power supply cable tested? – Electrical connection made properly? – Mechanical components attached correctly? ƒ Check level control: – Float switches can move freely? – Switching level tested (pump on, pump off, minimum water level)? – Additional dry-running protection installed? ƒ Test operating conditions: – Min./max. temperature of the fluid tested? – Max. immersion depth tested? – Operating mode defined depending on the minimum water level? – Maximum switching frequency adhered to? ƒ Check installation location/operating space: – Pipe system on the pressure side free of deposits? – Inlet or pump sump cleaned or free of deposits? – All gate valves open? – Minimum water level defined and monitored? The hydraulics housing must be filled completely with the fluid and there must be no air cushions in the hydraulics. NOTICE! Provide suitable venting devices if there is a risk of air cushions being formed in the system! 7.5 Switching on and off During the start process, the rated current is temporarily ex- ceeded. During operation, the rated current may no longer be ex- ceeded. CAUTION! If the pump does not start, switch off the pump immediately. Remove the fault before reactivating the pump! Place pumps which are installed as portable pumps on a firm sur- face so they are level. If pumps have fallen over, place them up- right again before activating them. Securely attach the pump with screws in case of difficult surfaces. Pump with attached float switch and plug ƒ Single-phase current version: After inserting the plug into the socket, the pump is ready for operation. The pump is switched on and off automatically depending on the fill level. ƒ Three-phase current version: After inserting the plug into the socket, the pump is ready for operation. The pump is controlled via two switches on the plug: – MANUAL/AUTO: Determines if the pump is switched on and off directly (MANUAL) or depending on the fill level (AUTO). – ON/OFF: Switch pump on and off. Pump with attached plug ƒ Single-phase current version: After inserting the plug in the socket, the pump is switched on. ƒ Three-phase current version: After inserting the plug into the socket, the pump is ready for operation. The pump is switched on and off with the ON/OFF switch. Pumps with bare cable end The pump must be switched on and off using a separate operating point (on/off switch, switchgear) provided by the customer.

7.6 During operation WARNING Amputation of limbs due to rotating compon- ents! No persons must be present in the work area of the pump! There is risk of (serious) injuries due to rotat- ing components! No persons must be present in the work area of the pump during start-up or operation. WARNING Risk of burns from hot surfaces! Motor housing can become hot during operation. It may cause burns. Allow the pump to cool down at ambient temperature after switching it off! NOTICE Pumping problems due to water level being too low The hydraulics are self-venting. Smaller air cushions are resorbed during pumping. If the fluid is lowered too much, separation of the volume flow may occur. The minimum permissible water level must reach the upper edge of the hydraulics housing! When operating the pump, observe the locally applicable regula- tions on the following topics: ƒ Work safety ƒ Accident prevention ƒ Handling electrical machines Strictly adhere to the responsibilities of the personnel specified by the operator. All personnel are responsible for ensuring that the responsibilities of the personnel and the regulations are ob- served! Due to their design, centrifugal pumps have rotating parts that are easily accessible. Depending on the operating condition, sharp edges can develop on these parts. WARNING! This can lead to cuts and limbs may be severed! Check the following at regu- lar intervals: ƒ Operating voltage (+/-10 % of the rated voltage) ƒ Frequency (+/-2 % of the rated frequency) ƒ Power consumption between individual phases (max. 5 %) ƒ Voltage difference between the individual phases (max. 1 %) ƒ Max. switching frequency ƒ Minimum water submersion depending on the operating mode ƒ Inlet: no air intake ƒ Level control device/dry-running protection: Switching points ƒ Quiet/low-vibration running ƒ All gate valves open 8 Shut-down/dismantling 8.1 Personnel qualifications ƒ Operation/control: Operating personnel must be instructed in the functioning of the complete system. ƒ Electrical work: A qualified electrician must carry out the elec- trical work. ƒ Installation/dismantling: The technician must be trained in the use of the necessary tools and fixation materials for the relev- ant construction site. 8.2 Operator responsibilities ƒ Locally applicable accident prevention and safety regulations of trade associations. ƒ Observe regulations for working with heavy loads and under suspended loads. ƒ Provide the necessary protective equipment and make sure that the personnel wears it. ƒ Provide adequate aeration in closed rooms. ƒ Take immediate countermeasures if there is a build-up of toxic or suffocating gases! 8.3 Shut-down The pump is deactivated during decommissioning, but remains installed. This ensures that the pump is always ready for opera- tion. ‡ To protect the pump from frost and ice, always immerse the pump completely in the fluid. ‡ The temperature of the fluid must always be above +3 °C (+37 °F). 1. Switch off the pump at the operating point. 2. Secure the operating point against being switched on again by unauthorised persons (e.g. lock main switch). ▶The pump is out of operation and can now be dis- mantled. If the pump remains installed after decommissioning, observe the following: ƒ Ensure that the prerequisites for decommissioning are main- tained for the complete period of decommissioning. If these prerequisites cannot be guaranteed, dismantle the pump after decommissioning! ƒ For an extended period of decommissioning, carry out a 5- minute function test at regular intervals (monthly to quarterly). CAUTION! A function test may only be carried out under the applicable operating conditions. A dry run is not permitted! Non-compliance can result in irreparable dam- age!

21 8.4 Removal DANGER Danger due to fluids hazardous to health! If the pump is used in fluids hazardous to health, de- contaminate the pump after dismantling and before carrying out any other work! There is a risk of fatal in- jury! Observe the specifications in the work regula- tions! The operator must make sure that the person- nel have received and read the work regulations! DANGER Risk of death due to electrocution! Improper conduct when carrying out electrical work can lead to death due to electric shock! Electrical work must be carried out by a qualified electrician in accordance with the locally applicable regulations. DANGER Risk of fatal injury due to dangerous lone working practices! Work in chambers and narrow rooms as well as work involving risk of falling are dangerous work. Such work may not be carried out autonomously! A second person must be present for safety reasons. WARNING Risk of burns from hot surfaces! Motor housing can become hot during operation. It may cause burns. Allow the pump to cool down at ambient temperature after switching it off! NOTICE Use only properly functioning lifting equip- ment! Use only properly functioning lifting equipment to lift and lower the pump. Ensure that the pump does not become jammed during lifting and lowering. Do not exceed the maximum bearing capacity of the lifting equipment! Check that lifting equipment is function- ing properly before use! 8.4.1 Stationary wet well installation ‡ Pump is decommissioned. ‡ Gate valves on the inlet and pressure side closed. 1. Disconnect the pump from the mains. 2. Attach the lifting equipment to the attachment point. CAUTION! Never pull on the power supply cable! This damages the power supply cable! 3. Slowly raise the pump and lift above the guide pipes from the operating space. CAUTION! The power supply cable can be damaged while lifting! Hold the power supply cable slightly taut when lifting! 4. Clean the pump thoroughly (see point “Cleaning and dis- infecting”). DANGER! Disinfect the pump when used in fluids hazardous to health! 8.4.2 Portable wet well installation ‡ Pump is taken out of operation. 1. Disconnect the pump from the mains. 2. Roll up the power supply cable and place it over the mo- tor housing. CAUTION! Never pull on the power supply cable! This damages the power supply cable! 3. Loosen the pressure pipe from the pressure port. 4. Attach the lifting equipment to the attachment point. 5. Lift the pump from the operating space. CAUTION! The power supply cable may be squeezed and damaged when setting the pump down! Pay attention to the power supply cable when setting the pump down! 6. Clean the pump thoroughly (see point “Cleaning and dis- infecting”). DANGER! Disinfect the pump when used in fluids hazardous to health! 8.4.3 Clean and disinfect DANGER Danger due to fluids hazardous to health! Danger to life if the pump is used in fluids hazardous to health! Decontaminate the pump before carrying out any further work! Wear the following protective equipment while performing cleaning tasks: • Closed safety goggles • Breathing mask • Protective gloves ⇒The equipment listed here is the minimum re- quirement, observe the specifications of the work regulations! The operator must make sure that the personnel have received and read the work regulations! ‡ Pump is dismantled. ‡ Contaminated cleaning water is disposed of in the sewer in accordance with the locally applicable regulations.

22 WILO SE 2019-02 ‡ A disinfectant is provided for contaminated pumps. 1. Attach the lifting equipment to the attachment point of the pump. 2. Lift the pump approximately 30 cm (10 in) above the ground. 3. Spray the pump with clear water from top to bottom. NOTICE! An appropriate disinfectant must be used for contaminated pumps! Strictly observe the manufac- turer’s specifications concerning use! 4. To clean the impeller and the pump interior, guide the water jet inside via the pressure port. 5. Flush all dirt residue onto the floor of the channel. 6. Allow the pump to dry out. In order to completely drain the pump housing, lie it down on its side for approx. 5 minutes. Place the pres- sure port face down. 8.4.3.1 Clean the interior area of the hydraulics Remove the baseplate of the hydraulics for easier cleaning of the interior area of the hydraulics. 1 2 Fig. 10: Disassemble baseplate 1 Safety screw 2 Baseplate 1. Place the pump on a firm surface in a horizontal posi- tion. WARNING! Risk of hands being crushed. Ensure that the pump cannot fall over or slip away! 2. Unscrew the safety screw (Allen bolt 4) of the baseplate half-way, until the bayonet coupling can be turned. 3. The baseplate is attached with a bayonet coupling. Turn the baseplate clockwise (to the right) and remove. 4. Rinse the interior area of the hydraulics with clear water, remove solids manually. WARNING! Sharp edges can form on the impeller. This can lead to extremities be- ing cut off! Wear safety gloves to protect against cuts! 5. Check correct position of O-ring on the baseplate. 6. Lubricate the O-ring with O-ring grease and set the baseplate on the hydraulic part. 7. Turn baseplate anticlockwise (to the left). The baseplate is fixed in place with the bayonet coupling. 8. Screw in the safety screw of the baseplate. Max. tight- ening torque: 1.5 Nm (1.1 ft·lb)! ▶Hydraulics cleaned and locked, complete cleaning tasks. 9 Maintenance and repair DANGER Danger due to fluids hazardous to health! If the pump is used in fluids hazardous to health, de- contaminate the pump after dismantling and before carrying out any other work! There is a risk of fatal injury! Observe the specifications in the work regula- tions! The operator must make sure that the person- nel have received and read the work regulations! NOTICE Use only properly functioning lifting equip- ment! Use only properly functioning lifting equipment to lift and lower the pump. Ensure that the pump does not become jammed during lifting and lowering. Do not exceed the maximum bearing capacity of the lifting equipment! Check that lifting equipment is functioning properly before use! ƒ Always carry out maintenance tasks in a clean location with good lighting. It must be possible to position the pump safely and secure it. ƒ Only carry out maintenance tasks mentioned in these installa- tion and operating instructions. ƒ Wear the following protective equipment while performing maintenance tasks: – Safety goggles – Safety shoes – Safety gloves 9.1 Personnel qualifications ƒ Electrical work: A qualified electrician must carry out the elec- trical work.

en Installation and operating instructions Wilo-Rexa UNI 23 ƒ Maintenance tasks: The technician must be familiar with the use of operating fluids and their disposal. In addition, the tech- nician must have basic knowledge of mechanical engineering. 9.2 Operator responsibilities ƒ Provide the necessary protective equipment and make sure that the personnel wears it. ƒ Collect operating fluids in suitable tanks and dispose of prop- erly. ƒ Dispose of protective clothing used in accordance with regula- tions. ƒ Use only original parts of the manufacturer. Use of parts other than the original parts releases the manufacturer from any li- ability. ƒ Collect any leakage of fluid and operating fluid immediately and dispose of it according to the locally applicable guidelines. ƒ Provide the tools required. ƒ If flammable solvents and cleaning agents are used, open flames, naked lights and smoking are prohibited. 9.3 Operating fluid 9.3.1 Oil types Medicinal white oil is filled into the sealing chamber ex-factory. The following oil types are recommended when changing the oil: ƒ Aral Autin PL* ƒ Shell ONDINA 919 ƒ Esso MARCOL 52* or 82* ƒ BP WHITEMORE WOM 14* ƒ Texaco Pharmaceutical 30* or 40* All oil types marked with “*” are approved for use with foods in accordance with “USDA-H1”. 9.3.2 Filling quantities The filling quantities depend on the pump type: ƒ Rexa UNI V05...: 600 ml (20 US.fl.oz.) ƒ Rexa UNI V06...: 1000 ml (34 US.fl.oz.) 9.4 Maintenance intervals To ensure reliable operation, maintenance tasks must be carried out regularly. Depending on the real ambient temperatures, main- tenance intervals different from those mentioned in the contract can be defined! If strong vibrations occur during operation, the pump and the installation must be checked regardless of the defined maintenance intervals. 9.4.1 Maintenance intervals for normal conditions 5 years or 1500 operating hours ƒ Visual inspection of the power supply cable ƒ Visual inspection of accessories ƒ Visual inspection of the housing for wear ƒ Function test of monitoring devices ƒ Oil change 10 years or 5000 operating hours ƒ General overhaul 9.4.2 Maintenance intervals for use in sewage lifting units When the pump is used in sewage lifting units inside buildings or on plots of land, carry out maintenance intervals and measures in accordance with DIN EN 12056‑4! 9.4.3 Maintenance intervals for harsh conditions Under harsh operating conditions, specified maintenance intervals must be shortened if required. Harsh operating conditions include: ƒ Fluids with long-fibre components ƒ Turbulent inlet (e.g. due to air intake, cavitation) ƒ Strongly corroding or abrasive fluids ƒ Heavily gas generating fluids ƒ Operation at an unfavourable duty point ƒ Pressure surges When using pumps under hard conditions, it is recommended to sign a maintenance contract. Contact customer service. 9.5 Maintenance measures WARNING Sharp edges on the impeller and suction port! Sharp edges can form on the impeller and suction port. There is danger of limbs being severed! Protect- ive gloves must be worn to protect from cuts. WARNING Hand, foot or eye injuries due to the absence of protective equipment! Danger of (serious) injuries during work. Wear the fol- lowing protective equipment: • Safety gloves for protection against cuts • Safety shoes • Closed safety goggles The following pre-requisites must be fulfilled prior to starting maintenance measures: ƒ Pump cooled down to the ambient temperature. ƒ Pump cleaned thoroughly and disinfected (if required). 9.5.1 Recommended maintenance measures Regular inspection of power consumption and the operating voltage in all three phases is recommended for smooth operation. In normal operation, these values remain constant. Slight fluctu- ations depend on the characteristics of the fluid. Power consump- tion can provide an early indication of damage or malfunctions in

24 WILO SE 2019-02 the impeller, bearings or motor, which can be rectified. Larger voltage fluctuations strain the motor winding and can cause the pump to break down. Regular inspections can therefore largely prevent major secondary damage and reduce the risk of total breakdown. In this regard, it is recommended to use remote monitoring for regular inspections. 9.5.2 Visual inspection of the connection cable Check connection cable for: ƒ Bubbles ƒ Cracks ƒ Scratches ƒ Abrasion ƒ Pinch points If damage is identified on the connection cable, decommission the pump immediately! Have the connection cable replaced by Wilo customer service. Only operate the pump up again once the damage has been properly remedied! CAUTION! Water may penetrate into the pump due to the damaged connection cable! Water ingress leads to total failure of the pump. 9.5.3 Visual inspection of accessories Accessories must be checked for: ƒ Correct fixation ƒ Smooth function ƒ Signs of wear, e.g. cracks caused by frequencies Any defects detected must be repaired immediately or the ac- cessories must be replaced. 9.5.4 Visual inspection of the housing for wear The housing parts are not allowed to have any apparent damage. Contact customer service if defects are detected! 9.5.5 Function test of the monitoring device To test resistances, the pump must be cooled down to the ambi- ent temperature! 9.5.5.1 Test the resistor of the temperature sensor Measure the resistor of the temperature sensors with an ohm- meter. The bimetallic strips must have a measured value of 0 Ohm (passage). 9.5.6 Oil change in sealing chamber WARNING Operating fluid under high pressure! A pressure of several bar can build up in the motor! This pressure escapes when the screw plugs are opened. If screw plugs are opened without due cau- tion, they can be ejected at high speed! To avoid in- juries, observe the following instructions: • Adhere to the prescribed sequence of work steps. • Unscrew the screw plugs slowly, but never un- screw them completely. As soon as the pressure escapes (audible whistling or hissing of air), stop turning the screw plug any further! • When the pressure has completely dissipated, fully unscrew the screw plugs. • Wear closed safety goggles. WARNING Scalding from hot operating fluids! Hot operating fluids can also spray out when pres- sure is released. This can result in scalding! To avoid injuries, the following instructions must be observed: • Allow the motor to cool down to the ambient temperature before opening the screw plugs. • Wear closed safety goggles or face protection and gloves. 1 Fig. 11: Sealing chamber: Oil change 1 Screw plug sealing chamber ‡ Protective equipment has been put on! ‡ Pump has been dismantled and cleaned (decontamin- ated if required).

en Installation and operating instructions Wilo-Rexa UNI 25 1. Position the pump horizontally on a firm surface. The screw plug points upwards. WARNING! Risk of hands being crushed. Ensure that the pump cannot fall over or slip away! 2. Unscrew the screw plug slowly, but do not unscrew it completely. WARNING! Overpressure in the motor! Stop turning the screw plug further if hissing or whist- ling is audible! Wait until the pressure has completely dissipated. 3. After the pressure has dissipated, fully unscrew the screw plug. 4. Place a suitable tank to collect the operating fluid. 5. Drain the operating fluid: Rotate the pump until the opening points downwards. 6. Check the operating fluid: Notify customer service if an operating fluid contains metal chips! 7. Pour in operating fluid: Rotate the pump until the open- ing points upwards. Fill-in the operating fluid into the opening. ⇒Comply with the specifications for operating fluid locations and quantity! 8. Clean the screw plug, replace the seal ring and screw it back in. Max. tightening torque: 8 Nm (5.9 ft lb)! 9.5.7 General overhaul During the general overhaul, the motor bearings, shaft sealings, O-rings and power supply cables are checked for wear and dam- age. Damaged components are replaced with original parts. This will ensure correct operation. The general overhaul is performed by the manufacturer or an au- thorised service centre. 10 Faults, causes and remedies DANGER Danger due to fluids hazardous to health! Danger of death in case of pumps with fluids hazard- ous to health! Wear the following protective equip- ment while performing the work: • Closed safety goggles • Breathing mask • Protective gloves ⇒The equipment listed here is the minimum re- quirement, observe the specifications of the work regulations! The operator must make sure that the personnel have received and read the work regulations! DANGER Risk of death due to electrocution! Improper conduct when carrying out electrical work can lead to death due to electric shock! Electrical work must be carried out by a qualified electrician in accordance with the locally applicable regulations. DANGER Risk of fatal injury due to dangerous lone working practices! Work in chambers and narrow rooms as well as work involving risk of falling are dangerous work. Such work may not be carried out autonomously! A second person must be present for safety reasons. WARNING No persons are allowed to be present inside the working area of the pump! Persons may suffer (serious) injuries while the pump is in operation! No persons may therefore be present in- side the working area. If persons must enter the working area of the pump, the pump must be decom- missioned and secured against being switched on again without authorisation. WARNING Sharp edges on the impeller and suction port! Sharp edges can form on the impeller and suction port. There is danger of limbs being severed! Protect- ive gloves must be worn to protect from cuts. Fault: Pump does not start 1. Electricity supply interrupted or short-circuit/earth fault in the cable or motor winding. ⇒Have the connection and motor checked by a quali- fied electrician and replace if necessary. 2. Tripping of fuses, of the motor protection switch or the monitoring equipment ⇒Have the connection and the monitoring equipment checked by a qualified electrician and change it if necessary. ⇒Have the motor protection switches and fuses in- stalled and adjusted according to the technical spe- cifications by a qualified electrician and reset monit- oring equipment. ⇒Check the impeller to make sure that it runs smoothly, clean the hydraulics if necessary.

26 WILO SE 2019-02 Fault: Pump starts up, motor protection trips after short period 1. Motor protection switch set incorrectly. ⇒Have the adjustment of the trigger checked and corrected by a qualified electrician. 2. Increased power consumption due to major voltage drop. ⇒Have the voltage of individual phases checked by a qualified electrician. Contact the electricity distri- bution network. 3. There are only two phases at the connection. ⇒Have the connection checked and corrected by a qualified electrician. 4. Excessive differences in voltage between the phases. ⇒Have the voltage of individual phases checked by a qualified electrician. Contact the electricity distri- bution network. 5. Incorrect direction of rotation. ⇒Have the connection corrected by a qualified elec- trician. 6. Increased power consumption through jammed hydraul- ics. ⇒Clean the hydraulics and check the inlet. 7. The density of the fluid is too high. ⇒Contact customer service. Fault: Pump runs, there is no volume flow 1. There is no fluid. ⇒Check the inlet, open all gate valves. 2. Inlet clogged. ⇒Check the inlet and remove clogging. 3. Hydraulics jammed. ⇒Clean the hydraulics. 4. Pipe system on the pressure side or pressure hose clogged. ⇒Remove clogging and replace the damaged com- ponents if necessary. 5. Intermittent operation. ⇒Check the switching system. Fault: Pump starts, duty point is not reached 1. Inlet clogged. ⇒Check the inlet and remove clogging. 2. Slide valves on the pressure side closed. ⇒Open all gate valves completely. 3. Hydraulics jammed. ⇒Clean the hydraulics. 4. Incorrect direction of rotation. ⇒Have the connection corrected by a qualified elec- trician. 5. Air cushion in the pipe system. ⇒Vent the pipe system. ⇒If air cushions occur frequently: Locate and prevent the air intake, if required install ventilation systems at specified locations. 6. Pump pumping against excessive pressure. ⇒Open all gate valves on the pressure side com- pletely. ⇒Check the impeller shape, use other impeller shapes if required. Contact customer service. 7. Signs of wear on the hydraulics. ⇒Have the components (impeller, suction port, pump housing) checked and replaced by customer ser- vice. 8. Pipe system on the pressure side or pressure hose clogged. ⇒Remove clogging and replace the damaged com- ponents if necessary. 9. Strongly gassing fluid. ⇒Contact customer service. 10.There are only two phases at the connection. ⇒Have the connection checked and corrected by a qualified electrician. 11.Excessive decrease in the fill level during operation. ⇒Check supply/capacity of the system. ⇒Have the switching points of the level control checked and adjusted if necessary. Fault: The pump does not run smoothly and is noisy 1. Improper duty point. ⇒Check the pump configuration and the duty point, contact customer service. 2. Hydraulics jammed. ⇒Clean the hydraulics. 3. Strongly gassing fluid. ⇒Contact customer service. 4. There are only two phases at the connection. ⇒Have the connection checked and corrected by a qualified electrician. 5. Incorrect direction of rotation. ⇒Have the connection corrected by a qualified elec- trician. 6. Signs of wear on the hydraulics.

27 ⇒Have the components (impeller, suction port, pump housing) checked and replaced by customer service. 7. Motor bearings have worn. ⇒Inform customer service; send the pump back to the factory for overhauling. 8. Pump is installed under tension. ⇒Check installation, install rubber compensators if necessary. Further steps for troubleshooting If the points listed here do not rectify the fault, contact customer service. Customer service can assist in the following ways: ƒ Telephone or written support. ƒ On-site support. ƒ Inspection and repair at the factory. Costs may be incurred if you request customer services! Please contact customer services for more information. 11 Spare parts Spare parts are ordered via customer service. To avoid return queries and incorrect orders, the serial or article number must al- ways be supplied. Subject to change without prior notice! 12 Disposal 12.1 Oils and lubricants Operating fluid must be collected in suitable tanks and disposed of in accordance with the locally applicable guidelines. Wipe up drips immediately! 12.2 Protective clothing Used protective clothing must be disposed off in accordance with the locally applicable guidelines. 12.3 Information on the collection of used electrical and electronic products Proper disposal and appropriate recycling of this product prevents damage to the environment and danger to your personal health. NOTICE Disposal in domestic waste is forbidden! In the European Union, this symbol can appear on the product, the packaging or the accompanying docu- mentation. It means that the electrical and electronic products in question must not be disposed of along with domestic waste. To ensure proper handling, recycling and disposal of the used products in question, please note the following points: ƒ Only hand over these products at designated, certified collect- ing points. ƒ Observe the locally applicable regulations! Please consult your local municipality, the nearest waste disposal site, or the dealer who sold the product to you for information on proper disposal. Further recycling information at www.wilo‑recycling.com.

T +54 11 4361 5929 [email protected] Australia WILO Australia Pty Limited Murrarrie, Queensland, 4172 T +61 7 3907 6900 [email protected] Austria WILO Pumpen Österreich GmbH 2351 Wiener Neudorf T +43 507 507-0 [email protected] Azerbaijan WILO Caspian LLC 1065 Baku T +994 12 5962372 [email protected] Belarus WILO Bel IOOO 220035 Minsk T +375 17 3963446 [email protected] Belgium WILO NV/SA 1083 Ganshoren T +32 2 4823333 [email protected] Bulgaria WILO Bulgaria EOOD 1125 Sofia T +359 2 9701970 [email protected] Brazil WILO Comercio e Importacao Ltda Jundiaí – São Paulo – Brasil 13.213-105 T +55 11 2923 9456 [email protected] Canada WILO Canada Inc. Calgary, Alberta T2A 5L7 T +1 403 2769456 [email protected] China WILO China Ltd. 101300 Beijing T +86 10 58041888 [email protected] Croatia WILO Hrvatska d.o.o. 10430 Samobor T +38 51 3430914 [email protected] Cuba WILO SE Oficina Comercial Edificio Simona Apto 105 Siboney. La Habana. Cuba T +53 5 2795135 T +53 7 272 2330 raul.rodriguez@wilo-cuba. com Czech Republic WILO CS, s.r.o. 25101 Cestlice T +420 234 098711 [email protected] Denmark WILO Nordic Drejergangen 9 DK-2690 Karlslunde T +45 70 253 312 [email protected] Estonia WILO Eesti OÜ 12618 Tallinn T +372 6 509780 [email protected] Finland WILO Nordic Tillinmäentie 1 A FIN-02330 Espoo T +358 207 401 540 [email protected] France Wilo Salmson France S.A.S. 53005 Laval Cedex T +33 2435 95400 [email protected] United Kingdom WILO (U.K.) Ltd. Burton Upon Trent DE14 2WJ T +44 1283 523000 [email protected] Greece WILO Hellas SA 4569 Anixi (Attika) T +302 10 6248300 [email protected] Hungary WILO Magyarország Kft 2045 Törökbálint (Budapest) T +36 23 889500 [email protected] India Wilo Mather and Platt Pumps Private Limited Pune 411019 T +91 20 27442100 [email protected] Indonesia PT. WILO Pumps Indonesia Jakarta Timur, 13950 T +62 21 7247676 [email protected] Ireland WILO Ireland Limerick T +353 61 227566 [email protected] Italy WILO Italia s.r.l. Via Novegro, 1/A20090 Segrate MI T +39 25538351 [email protected] Kazakhstan WILO Central Asia 050002 Almaty T +7 727 312 40 10 [email protected] Korea WILO Pumps Ltd.­ 20 Gangseo, Busan T +82 51 950 8000 [email protected] Latvia WILO Baltic SIA 1019 Riga T +371 6714-5229 [email protected] Lebanon WILO LEBANON SARL Jdeideh 1202 2030 Lebanon T +961 1 888910 [email protected] Lithuania WILO Lietuva UAB 03202 Vilnius T +370 5 2136495 [email protected]­ Morocco WILO Maroc SARL 20250 Casablanca T +212 (0) 5 22 66 09 24 [email protected] The Netherlands WILO Nederland B.V. 1551 NA Westzaan T +31 88 9456 000 [email protected] Norway WILO Nordic Alf Bjerckes vei 20 NO-0582 Oslo T +47 22 80 45 70 [email protected] Poland WILO Polska Sp. z.o.o. 5-506 Lesznowola T +48 22 7026161 [email protected] Portugal Bombas Wilo-Salmson Sistemas Hidraulicos Lda. 4475-330 Maia T +351 22 2080350 [email protected] Romania WILO Romania s.r.l. 077040 Com. Chiajna Jud. Ilfov T +40 21 3170164 [email protected] Russia WILO Rus ooo 123592­Moscow T +7 496 514 6110 [email protected] Saudi Arabia WILO Middle East KSA Riyadh 11465 T +966 1 4624430 [email protected] Serbia and Montenegro WILO Beograd d.o.o. 11000 Beograd T +381 11 2851278 [email protected] Slovakia WILO CS s.r.o., org. Zložka 83106 Bratislava T +421 2 33014511 [email protected] Slovenia WILO Adriatic d.o.o. 1000 Ljubljana T +386 1 5838130 [email protected] South Africa Wilo Pumps SA Pty LTD Sandton T +27 11 6082780 gavin.bruggen wilo.co.za Spain WILO Ibérica S.A. 28806 Alcalá de Henares (Madrid) T +34 91 8797100 [email protected] Sweden WILO NORDIC Isbjörnsvägen 6 SE-352 45 Växjö T +46 470 72 76 00 [email protected] Switzerland Wilo Schweiz AG 4310 Rheinfelden T +41 61 836 80 20 [email protected] Taiwan WILO Taiwan CO., Ltd. 24159 New Taipei City T +886 2 2999 8676 [email protected] Turkey WILO Pompa Sistemleri San. ve Tic. A.S¸ 34956 İstanbul T +90 216 2509400 [email protected] Ukraine WILO Ukraine t.o.w. 08130 Kiew T +38 044 3937384 [email protected] United Arab Emirates WILO Middle East FZE Jebel Ali Free zone – South PO Box 262720 Dubai­ T +971 4 880 91 77 [email protected] USA WILO USA LLC Rosemont, IL 60018 T +1 866 945 6872 [email protected] Vietnam WILO Vietnam Co Ltd. Ho Chi Minh City, Vietnam T +84 8 38109975 [email protected] Wilo – International (Subsidiaries) Further subsidiaries, representation and sales offices on www.wilo.com Oktober 2018

WILO SE Nortkirchenstr. 100 44263 Dortmund Germany T +49 (0)231 4102-0 T +49 (0)231 4102-7363 [email protected] www.wilo.com