Teral NX-VFC Instruction Manual

Constant Control of Water Supply Unit Thank you very much for purchasing the TERAL water supply unit. In order to use the water supply unit appropriately, read this instruction manual before using, and do not perform operation, maintenance and inspection before understanding the description in this manual thoroughly. For safety purpose, observe the cautions and warnings in this instruction manual and those on the labels affixed on the water supply unit. Keep this manual carefully at hand where it can be consulted at any time of operation, maintenance and inspection of the water supply unit. To w ...

supplied by Teral Inc. shall be repaired or replaced free of charge within the scope of the relevant part, provided that such failure or breakage is attributable to inadequacy of the design or workmanship of the equipment. 2. The warranty mentioned in the above clause shall be only the mechanical warranty of the defective part, and shall not cover any expenses or other damage arising from the failure or breakage. 3. In the event of the following failures and breakage, the costs of the repairs and consumables (i.e. parts whose ...

1.1 Explanation of safety indications and graphic symbols ························································ 1-1 1.2 Safety precautions ······································································································ 1-1 2 ...

Before using the unit, thoroughly read this “Safety precautions” to properly use the product. Information described below is vital to safe and proper use of the unit and prevention of hazard and/or damage. 1.1 Explanation of safety indications and graphic symbols This instruction manual divides safety indications into four categories according to the level of hazard (the extent of damage/losses and the urgency). In addition, the type of user instructions is indicated with a graphic symbol. This manual uses the following signs. Fully understand these terms and symbols before reading this manual further. „ Explanation of th ...

carry out grounding work. Otherwise, it may lead to an electric leak and/or electric shock. Do not connect the ground wire to a gas pipe or water pipe. Such a connection is illegal and leads to an electric shock, explosion and/or fire. Ensure that all electric wires are securely connected. Otherwise, it may lead to fire and/or an electric shock. Before starting the maintenance or inspection work, be sure to stop the pump and turn off the main power of the panel board. Otherwise, it may lead to an electric shock, injury, damage, water leakage, and/or other problems. Before starting the unit or ...

Otherwise, it may lead to injury and/or damage. Properly make each setting of the control panel depending on the conditions of use. Otherwise, it may hinder the normal operation. Before operation, thoroughly clean (flush) the inside of the piping. Otherwise, the piping system may be contaminated with foreign matter, thus leading to an accident or a pump failure. Do not run the pump without priming. Otherwise, it may damage the sliding parts inside the pump. Do not perform automatic operation with the TJ valve shut. Otherwise, it may hinder the normal operation and damage the unit. Do not touch the motor ...

Caution Make sure that the delivered package is placed right-side up before unpacking. Pay special attention to nails especially when opening a wooden crate or you may get injured. Note After unpacking, ask the vendor to dispose of packaging materials that are no longer necessary. 2.1 Points to be checked When you receive the water supply unit, check the following points immediately after unpacking. (1) Check the nameplate to verify that the delivered product is exactly what you ordered. (2) Check that no part of the unit has been damaged during transportation. (3) Check all fastening parts including bolts and ...

This chapter describes standard specifications of the water supply unit. If you have purchased a customized product, some information in this chapter may not be applicable to your unit. Refer to the separately supplied delivery specifications and other documents to check the product specifications in such a case. 3.1 Specifications of the water supply unit Caution Do not use this unit under any conditions other than those provided in the specifications. Otherwise, electric shock, fire, water leakage, or property damage may occur. Note If the inflow pump head is 5m or more, contact Teral for con ...

3.2.1 Names and functions of the components of the water supply unit 䐟 Control panel The control panel controls the pump and supplies the power to the motor. It enables to start/stop the pump, detects the operating status of the pump and automatically switch the No. of the pump to run. Also it enables pump variable speed control by a pressure transmitter signal and thereby estimated terminal pressure constant control is conducted. 䐠 Pump Its motor rotates an impeller to generate pressure for delivering water. 䐡 Pressure transmitter The pressure transmitter converts pressure into an electric signal so as ...

ձ Display It displays a variety of information about the water supply unit. (ĺ see 7.4) ղ Operation selector switch The switch is to change the operation mode of the water supply unit. (ĺ see 7.1) ճ Current mode indicator lamp The lamp is to display the operation mode currently selected. մ Tank selector switch Press this switch to select the receiver tank(s) to be used. (ĺ see 7.2) յ Current tank indicator lamp The indicator lamp will be on for the receiver tank currently selected. ն Solenoid valve operation selector switch Press this switch to change the solenoid valve operation mo ...

Warning While the power is on, high voltage is applied inside the control panel, which is very dangerous. Any person other than the one authorized to do so must not open cover of the control panel. if not followed, it may cause an electric shock. (1) Components &%4 ᲢښͨᲣ &%4 ᲢښͨᲣ &%4 ᲢښͨᲣ &%4 ᲢښͨᲣ &%4 ᲢښͨᲣ Сࣂؕெ +08 +08 +08 +08 +08 '.%$ '.%$ '.%$ '.%$ '.%$ 6$ Ტ᩿ͨᲣ 40( 40( 40( 40( 40( ŠᚡӭƷᛟଢ 6$ ᩓเᇢ܇Ө +08 ǤȳȐȸǿ '.%$ ๨ᩓȖȬȸǫ &%4 щྙોծȪǢǯȈȫ ǪȗǷȧȳ 40( ȩǸǪȎǤǺȕǣȫǿ ...

Warning Do not remove the protective cover on the control board or the cover of the I/O terminal block when the power is turned on. Otherwise, it may lead to an electric shock. Table 3-2-4 (a) Connector assignments No. Connection point No. Connection point No. Connection point CN1 Equipment inside the control panel CN11 Flow switch for pump No. 4 CN21 Equipment inside the control panel CN2 Equipment inside the control panel CN12 Flow switch for pump No. 5 CN22 Equipment inside the control panel CN3 Equipment inside the control panel CN13 (Unused) CN23 Equipment inside the contr ...

Table 3-3 Specifications of control panel Item Specifications 1 Specifications 2 Control panel model BQNXC Operation mode Automatic rotational operation (WX3/TX3/TX4/FX4/FX5/GX5) Material and external color of casing Steel plate (Munsell 5Y7/1 semigloss/baking finish) Output range Three-phase 200/200-220 V (50/60 Hz) 1.1 to 7.5 kW Circuit configuration Ground fault interrupter Individual pump systems S Power-factor correcting reactor (DCR) Individual pump systems 㸫 S Motor protection 㸫 Inverter (electronic thermal protection) Double receiver tank circuit Can be switched on the operation panel S Inflow solenoi ...

Table 3-4-1 Specification list (positive suction type) Suction condition Operation method Nominal dia. mm Type Output kW Phase/ Voltage V Standard specification Spec. range Charged pressure in pressure tank MPa(kgf/cm2) Pump suction Unit discharge Max. water supply amount m3/min Total pump head m Min. pump head m Stop pressure (rough value) MPa(kgf/cm2) Water supply amount m3/min Discharge pump head range m positive suction type 2-pump Parallel, 3-pump Rotation 40 65 NX-65VFC401-1.1W x 3-e 1.1 3-phase䡡 200 (50Hz) 3-phase 200/220 (60Hz) 0.4 18 15 0.20 (2.0) 0.04 to 0.48 15 to 2 ...

Table 3-4-2 Specification list (negative suction type) Suction condition Operation method Nominal dia. mm Type Output kW Phase/ Voltage V Standard specification Spec. range Charged pressure in pressure tank MPa(kgf/cm2) Pump suction Unit discharge Max. water supply amount m3/min Total pump head m Min. pump head m Stop pressure (rough value) MPa(kgf/cm2) Water supply amount m3/min Discharge pump head range m negative suction type 2-pump Parallel, 3-pump Rotation 40 65 NX-65VFC401-1.1W x 3-e 1.1 3-phase䡡 200 (50Hz) 3-phase 200/220 (60Hz) 0.4 18 15 0.23 (2.3) 0.04 to 0.55 12 to 25 0.10 (1.0) NX-65VFC402-1 ...

Warning When moving or installing the unit, never lift it in an unstable condition or with any load applied to the pressure tank, pipes, or control panel. Otherwise, the unit may fall, resulting in injury and/or damage. Before lifting the unit, refer to the catalog, the external dimensions drawing, or other documents to check the weight of the unit, and use an appropriate lifting device of which rated load is over the the unit. Otherwise, the unit may fall, resulting in injury and/or damage. Caution For the installation environment, follow the precautions described below. Otherwise, it may lead to fa ...

Caution Do not screw a pipe into the pump with the companion flange attached to the pump. Otherwise, it may damage the pump. Caution Do not merge the suction pipes. Do not install the piping with a shape of upward bend (i.e. providing the piping with a rising slope and then a descending slope). Otherwise, it may hinder the normal operation. Caution Do not use any piping materials that are prone to rust. Otherwise, it may damage the unit. Caution After work, thoroughly clean (flush) the inside of the receiver tank and piping. (1) Attach a companion flange c to the water supply unit after connecting the pipe. (2) Insta ...

Warning Use the wiring equipment and devices compliant to use conditions, and carry out wiring work safely and securely according to the technical standards for electrical facilities, as well as the indoor wiring regulations. Only qualified personnel such as licensed electrical engineers are allowed to carry out electric wiring work. Incomplete wiring work by unqualified persons is prohibited by law. 4.3.1 Wiring work for power supply Warning Be sure to install a ground fault interrupter dedicated to this unit at the primary power supply. Otherwise, it may lead to an electric shock and/or fire. Warning Ensure to secu ...

Note Insert the instrumentation wires into the inlet ports for instrumentation wires, secure the wires by passing the binding band through the clamps on the right side face inside the control panel and under the contorl board, and then connect them to the board. If the clamps are not used for binding the wires, it may cause some trouble in the maintenance of the unit. Caution Attach grommets (22 mm in diameter) to the wire inlet ports to protect the wires, or use conduit tubes. (1) Wiring work for water level control Referring to the following tabl ...

Single receiver tank Double receiver tank 4P type electrode Settings Tank Selection setting: No.1 Solenoid Valve Operation setting: Man. Close Parameter P101: 4 Tank Selection setting: Common Solenoid Valve Operation setting: Man. Close Parameter P101: 4 Wiring pattern Terminal block for receiver tank No.1 Electrodes for receiver tank Terminal block for receiver tank No.1 Electrodes for receiver tank No.1 Terminal block for receiver tank No.2 Electrodes for receiver tank No.2 5P type electrode Settings Tank Selection setting: No.1 Solenoid Valve Operation setting: Man. Close Parameter P101: 5 Tank Sel ...