MIRKA PROS 525NV Operating Instructions Manual

bg Инструкция за експлоатация . . . . . . . . . . . . .15 cs Návod k obsluze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 da Brugsanvisning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 de Bedienungsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 el Οδηγίες χρήσης . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 en Operating instructions (original) . . . . . . . . . .50 es Instrucciones de manejo . . . . . . . . . . . . . . . . . . . . . . .57 et Kasutusjuhised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 fi Käyttöohjeet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71 fr Instructions d’utilisation . . . . . . . . . . . . . . . . . . . . . . . .78 hr Upute za rad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 hu Kezelői útmutató . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92 it Istruzioni per l’uso . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 ja 取扱説明書 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 ko 사용 지침 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 lt Naudojimo instrukcijos . . . . . . . . . . . . . . . . . . . . . . . .120 lv Lietošanas instrukcija . . . . . . . . . . . . . . . . . . . . . . . . . . .127 mk Упатства за ракување . . . . . . . . . . . . . . . . . . . . . . . . .134 nl Gebruiksaanwijzing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141 no Bruksanvisning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148 pl Instrukcje dot . użytkowania . . . . . . . . . . . . . . . .155 pt Instruções de operação . . . . . . . . . . . . . . . . . . . . . . .162 ro Instrucţiuni de operare . . . . . . . . . . . . . . . . . . . . . . . .169 ru Руководство по эксплуатации . . . . . . . . .176 sl Navodila za uporabo . . . . . . . . . . . . . . . . . . . . . . . . . . . .183 sr Uputstvo za rad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190 sv Bruksanvisning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197 tr İşletim Talimatları . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204 zh 操作说明 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Mirka® PROS 150 mm (6") • 125 mm (5")

Mirka code Item Description Kit Part No Quantity MIE6536211 Bearing kit (loose parts) A 316 Bearing MPP0316 1 317 Rubber seal MPP0317 1 318 Washer (optional) MPP0318 opt . 319 Retaining ring MPP0319 1 8995690141 Spindle bearing kit (preassembled) A+320 316 Bearing MPP0316 1 317 Rubber seal MPP0317 1 318 Washer (optional) MPP0318 opt . 319 Retaining ring MPP0319 1 320 Spindle MPP0320 1 8995690021 Endplate bearing kit B MPP9002 301 Retaining ring MPP0301 1 302 Bearing MPP0302 1 311 Dust seal MPP0311 1 324 Bearing MPP0324 1 8995690031 Speed valve kit C MPP9003 201 Regulator unit MPP0201 1 202 Valve stem MPP0202 1 203 O-ring MPP0203 1 204 O-ring MPP0204 2 205 Retaining ring MPP0205 1 8995690041 Muffler kit 12 000 rpm D MPP9004 404 Nozzle MPP0404 1 405 Muffler MPP0405 1 406 Muffler cap MPP0406 1 422 O-Ring MPP0422 1 423 Powder metal silencer MPP0423 1 8995690051 Air inlet kit E MPP9005 206 Seal MPP0206 1 207 Tip valve MPP0207 1 208 Valve spring MPP0208 1 209 Inlet connection MPP0209 1 8995690061 Rotor, vanes and key kit F MPP9006 308 Vanes MPP0308 5 309 Rotor MPP0309 1 314 Rotor key MPP0314 1 8995690071 Exhaust and swivel kit – PROS CV & DB G MPP9007 407 Vacuum adapter – PROS CV & DB MPP0407 1 408 O-ring MPP0408 1 409 Swivel grip MPP0409 1 410 Swivel connector MPP0410 1 8995690151 Lever kit 2,5 mm orbit H MPP9015 210 Spring pin MPP0210 1 211 Lever 2,5 mm orbit MPP0214 1 8995690081 Lever kit 5,0 mm orbit H MPP9008 210 Spring pin MPP0210 1 211 Lever 5,0 mm orbit MPP0211 1 Parts list – kits

Mirka code Item Description Kit Part No Quantity 8995690091 Lever kit 8,0 mm orbit H MPP9009 210 Spring pin MPP0210 1 211 Lever 8,0 mm orbit MPP0213 1 8995690221 Retainer and O-ring kit – PROS DB I MPP9022 411 O-ring MPP0411 2 417 Muffler connection MPP0417 1 8995690121 Housing and mark plate kit J MPP9012 101 Housing MPP0101 1 102 Mark plate MPP0102 1 103 Model sticker (PROS 550, 580, 625, 650 & 680) MPP0103 7 8995690111 Lock ring and O-ring kit K MPP9011 312 O-ring MPP0312 1 313 Lock ring MPP0313 1 8995690131 Cylinder, spring pin and O-ring kit L MPP9013 304 Spring pin MPP0304 1 306 Cylinder MPP0306 1 307 O-ring MPP0307 1 8995690251 Shaft balancer kit 2,5 mm / 125 mm – PROS 525 M MPP9025 315 Shaft balancer 2,5 mm / 100 g pad MPP0330 1 325 Balance screws MPP0325 2 8995690161 Shaft Balancer kit 5,0 mm / 125 mm – PROS 550 M MPP9016 315 Shaft balancer 5,0 mm / 100 g pad MPP0315 1 325 Balance screws MPP0325 2 8995690211 Shaft balancer kit 8,0 mm / 125 mm – PROS 580 M MPP9021 315 Shaft balancer 8,0 mm / 100 g pad MPP0329 1 325 Balance screws MPP0325 2 8995690171 Shaft balancer kit 2,5 mm / 150 mm – PROS 625 M MPP9017 315 Shaft balancer 2,5 mm / 130 g pad MPP0326 1 325 Balance screws MPP0325 2 8995690181 Shaft balancer kit 5,0 mm / 150 mm – PROS 650 M MPP9018 315 Shaft balancer 5,0 mm / 130 g pad MPP0327 1 325 Balance screws MPP0325 2 8995690191 Shaft balancer kit 8,0 mm / 150 mm – PROS 680 M MPP9019 315 Shaft balancer 8,0 mm/ 130 g pad MPP0328 1 325 Balance screws MPP0325 2 8995690201 Muffler connection and O-ring kit – PROS CV N MPP9020 402 Muffler connection MPP0402 1 411 O-ring MPP0411 2 8995690231 Hose assembly kit 1,8 m – PROS DB O MPP9023 414 Hose air tube MPP0414 1 418 Fastening straps MPP0418 5 419 Hose 1,8 m for PROS DB MPP0419 1 8995690241 Muffler connection kit – PROS NV P MPP9024 421 Muffler connection MPP0421 1 Separate parts on next page. NOTE! Repairs done by non-authorized repairer will breach the Mirka warranty . Power tool must be serviced by a qualified repair person and in accordance with national requirements .

Mirka code Item Description Kit Part No Quantity 101 Housing J MPP0101 1 102 Mark plate J MPP0102 1 103 Model Sticker (PROS 550, 580, 625, 650 & 680) J MPP0103 7 201 Regulator unit C MPP0201 1 202 Valve stem C MPP0202 1 203 O-ring C MPP0203 1 204 O-ring C MPP0204 2 205 Retaining ring C MPP0205 1 206 Seal E MPP0206 1 207 Tip valve E MPP0207 1 208 Valve spring E MPP0208 1 209 Inlet connection E MPP0209 1 210 Spring pin H MPP0210 1 211 Lever 5,0 mm orbit H MPP0211 1 211 Lever 8,0 mm orbit H MPP0213 1 211 Lever 2,5 mm orbit H MPP0214 1 8995602121 212 Cover MPP0212 1 301 Retaining ring B MPP0301 1 302 Bearing B MPP0302 1 8995603031 303 Front ring MPP0303 1 304 Spring pin L MPP0304 1 8995603051 305 Front bearing plate MPP0305 1 306 Cylinder L MPP0306 1 8995603071 307 O-ring 10/pack L MPP0307 1 308 Vanes F MPP0308 5 309 Rotor F MPP0309 1 8995603101 310 Rear end plate MPP0310 1 311 Dust seal B MPP0311 1 312 O-ring K MPP0312 1 313 Lock ring K MPP0313 1 314 Rotor key F MPP0314 1 315 Shaft balancer 2,5 mm / 100 g pad M MPP0330 1 315 Shaft balancer 5,0 mm / 100 g pad M MPP0315 1 315 Shaft balancer 8,0 mm / 100 g pad M MPP0329 1 315 Shaft balancer 2,5 mm / 130 g Pad M MPP0326 1 315 Shaft balancer 5,0 mm / 130 g pad M MPP0327 1 315 Shaft balancer 8,0 mm / 130 g pad M MPP0328 1 316 Bearing A MPP0316 1 317 Rubber seal A MPP0317 1 318 Washer (optional) A MPP0318 opt . 319 Retaining ring A MPP0319 1 8995603201 320 Spindle A+320 MPP0320 1 8995603211 321 Brake seal MPP0321 1 8292502011 323 Mirka backing pad 125 mm, 28 H 5/16" Grip Med. 100 g - 1 8292605011 323 Mirka backing pad 150 mm, 48 H 5/16" Grip Med. 130 g - 1 8292501011 323 Mirka backing pad 125 mm, NH 5/16" PSA M 100 g - 1 8292601011 323 Mirka backing pad 150 mm, NH 5/16" PSA M 130 g - 1 324 Bearing B MPP0324 1 Parts list – spare parts & accessories

Mirka code Item Description Kit Part No Quantity 325 Balance screws M MPP0325 2 8995604011 401 Connector – PROS CV MPP0401 1 402 Muffler connection N MPP0402 1 404 Nozzle D MPP0404 1 405 Muffler D MPP0405 1 406 Muffler cap D MPP0406 1 407 Vacuum adapter G MPP0407 1 408 O-ring G MPP0408 1 409 Swivel grip G MPP0409 1 410 Swivel connector G MPP0410 1 411 O-ring I, N MPP0411 2 8995604121 412 Mirka pad wrench 24 mm (supplied with each tool) MPP0412 1 8995604131 413 Eductor tube – PROS DB MPP0413 1 414 Hose air tube O MPP0414 1 8995604151 415 Dust bag MPP0415 1 8995604161 416 Connector – PROS DB MPP0416 1 417 Muffler connection I MPP0417 1 MIN6529211 418 Fastening straps 6/pack O MPP0418 5 419 Hose assembly 1,8 m – PROS DB O MPP0419 1 8995604201 420 Vacuum adapter – PROS NV MPP0420 1 421 Muffler connection P MPP0421 1 422 O-ring D MPP0422 1 423 Powder metal silencer D MPP0423 1 Pad medium * Mirka code 525NV 550CV/NV 580CV/NV 625CV/NV 650CV/NV 680CV/NV 125 mm (5"), 100 g Grip 8292502011 X X X 150 mm (6"), 130 g Grip 8292605011 X X X 125 mm (5"), 100 g PSA 8292501011 X X X 150 mm (6"), 130 g PSA 8292601011 X X X * Soft and hard pad variants available as accessories NOTE! Repairs done by non-authorized repairer will breach the Mirka warranty . Power tool must be serviced by a qualified repair person and in accordance with national requirements .

en Declaration of conformity Mirka Ltd, 66850 Jeppo, Finland declare on our sole responsibility that the products Mirka® PROS 150 mm (6") & 125 mm (5") Pneumatic Random Orbital Sander (see “Technical data” table for particular model) to which this declaration relates are in conformity with the following standard or other normative document: EN ISO 15744:2008 . Following the provisions of 89/392/EEC as amended by 91/368/EEC & 93/44/EEC 93/68/EEC Directives and consolidating Directive 2006/42/EC . Jeppo 13.08.2020 Place and date of issue Company Stefan Sjöberg, CEO Operating instructions include: Exploded view, Parts list, Declaration of conformity, Important, Required personal safety equipment, Please read and comply with, Warning, Caution, Additional safety warnings, Technical data, Proper use of tool, Work stations, Operating instructions, Maintenance, Troubleshooting guide, Reducing vibrations with pad saver or interface . Manufacturer / Supplier Mirka Ltd 66850 Jeppo, Finland Tel . +358 20 760 2111 Fax +358 20 760 2290 www .mirka .com Important Read these safety and operating instructions carefully before installing, operating or maintaining this tool . Keep these instructions in a safe, accessible location . Original instructions . We reserve the right to make changes to this manual without prior notice . Read operator’s manual Wear safety glasses Wear ear protection Wear safety gloves Wear face mask Required personal safety equipment Warning: Potential hazardous situation that may result in death or serious injury and/or property damage . Caution: Potential hazardous situation that may result in minor or moderate injury and/or property damage . Please read and comply with • General Industry Safety & Health Regulations, part 1910, OSHA 2206, available from: Superintendent of Documents, Government Printing Office, Washington DC 20402 • Safety Code for Portable Air Tools, ANSI B186 .1 available from: American National Standards Institute, Inc ., 1430 Broadway, New York, New York 10018 • State and local regulations

en WARNING Always wear required personal safety protection in accordance with manufacturer’s instructions and local/national standards while using this tool . • Do not use a power tool if you are tired or under the influence of drugs, alcohol or medication . • Read the Materials Safety Data Sheet (MSDS) for the working surface . • Use the tool with dust extraction . A suitable dust extraction unit will reduce hazardous dust . • Do not overreach . Keep proper footing and balance at all times . • Do not wear loose clothing or jewellery . Keep your hair, clothing and gloves away from moving parts . Loose clothes, jewellery or long hair can be caught in moving parts . • If any physical hand/wrist discomfort is experienced, stop working and seek medical attention . Hand, wrist and arm injury may result from repetitive work, motion and overexposure to vibrations . • Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust . • The tool is not electrically insulated . Check work area for live electricity, gas pipes, etc . before operation . CAUTION • Prevent unintentional starting . • Remove pad wrench before connecting the tool to the air supply . • Keep work area clean and well lit . • Always ensure that the work piece to be sanded is firmly fixed . • Before changing abrasive always disconnect the air supply . Additional safety warnings • Read all instructions before using this tool . All operators must be fully trained in usage and safety of this tool . • All maintenance must be carried out by trained personnel . For service, contact Mirka authorized service centre! • Always wear required safety equipment (see warnings) . • The operator must be in a secure position and have a firm grip and footing on a solid floor . • Always ensure that the work piece to be sanded is firmly fixed . • Check tool, backing pad, hose and fittings regularly for wear . • Always take care to ensure your safety at work; never carry, store or leave the tool unattended with the air supply connected . • Vacuum unit dust collection bag should be cleaned or replaced daily . Dust can be highly combustible . Cleaning or replacing of bag also assures optimum performance . • Do not exceed maximum recommended air pressure of 6 .2 bar (90 psi) . • Take care to avoid entanglement of the moving parts of the tool with clothing, ties, hair, cleaning rags, etc . • Keep hands clear of the spinning pad during use . • If the tool appears to malfunction, remove from use immediately and arrange for service and repair . • Before changing abrasive always disconnect the air supply . Take care to properly attach and centre the abrasive on the backing pad .

en Technical data Mirka® PROS 525NV 550CV/NV 580CV/NV 625CV/NV 650CV/NV 680CV/NV Orbit 2.5 mm (3/32") 5 mm (3/16") 8 mm (5/16") 2.5 mm (3/32") 5 mm (3/16") 8 mm (5/16") Vacuum type – Central Central Central Central Central Pad size 125 mm (5") 125 mm (5") 125 mm (5") 150 mm (6") 150 mm (6") 150 mm (6") Product net weight 0.89 kg (1.96 lbs) 0.89 kg (1.96 lbs) 0.91 kg (2.01 lbs) 0.90 kg (1.98 lbs) 0.93 kg (2.05 lbs) 0.95 kg (2.09 lbs) Height 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") Length 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") Speed 12,000 rpm 12,000 rpm 12,000 rpm 12,000 rpm 12,000 rpm 12,000 rpm Noise level 75 dB(A) CV: 76 dB(A) NV: 75 dB(A) CV: 78 dB(A) NV: 77 dB(A) CV: 75 dB(A) NV: 75 dB(A) CV: 76 dB(A) NV: 76 dB(A) CV: 77 dB(A) NV: 74 dB(A) Power 270 W 270 W 270 W 270 W 270 W 270 W Air consumption 485 lpm 485 lpm 485 lpm 485 lpm 485 lpm 485 lpm Vibration level * 2.8 m/s2 2.4 m/s2 3.8 m/s2 2.3 m/s2 3.2 m/s2 3.4 m/s2 Uncertainty K * 0.8 m/s2 0.8 m/s2 0.9 m/s2 0.7 m/s2 0.8 m/s2 0.8 m/s2 The noise test is carried out in accordance with EN ISO 15744:2008 – Hand-held non-electric power tools – Noise measurement code – Engineering method (grade 2) . The vibration test is carried out in accordance with ISO 28927-3 - Hand-held portable power tools – Test method for evaluation of vibration emission – Part 3: Polishers and rotary, orbital and random orbital sanders . Mirka® PROS 550DB 580DB 625DB 650DB 680DB Orbit 5 mm (3/16") 8 mm (5/16") 2.5 mm (3/32") 5 mm (3/16") 8 mm (5/16") Vacuum type Self­generated Self­generated Self­generated Self­generated Self­generated Pad size 125 mm (5") 125 mm (5") 150 mm (6") 150 mm (6") 150 mm (6") Product net weight ** 0.89 kg (1.96 lbs) 0.91 kg (2.01 lbs) 0.90 kg (1.98 lbs) 0.93 kg (2.05 lbs) 0.95 kg (2.09 lbs) Height 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") 102 mm (4.02") Length 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") 229 mm (9.02") Speed 12,000 rpm 12,000 rpm 12,000 rpm 12,000 rpm 12,000 rpm Noise level 81.3 dB(A) 80.9 dB(A) 80.3 dB(A) 78.2 dB(A) 79.7 dB(A) Power 200 W 200 W 200 W 200 W 200 W Air consumption 485 lpm 485 lpm 485 lpm 485 lpm 485 lpm Vibration level * 2.8 m/s2 3.5 m/s2 2.3 m/s2 3.0 m/s2 2.5 m/s2 Uncertainty K * 0.8 m/s2 0.8 m/s2 0.7 m/s2 0.8 m/s2 0.7 m/s2 The noise test is carried out in accordance with EN ISO 15744:2008 – Hand-held non-electric power tools – Noise measurement code – Engineering method (grade 2) . The vibration test is carried out in accordance with ISO 28927-3 - Hand-held portable power tools – Test method for evaluation of vibration emission – Part 3: Polishers and rotary, orbital and random orbital sanders . Specifications subject to change without prior notice . Model range may vary between markets . * The values stated in the table are from laboratory testing in conformity with stated codes and standards, and are not sufficient for risk evaluation . Values measured in a particular work place may be higher than the declared values . The actual exposure values and amount of risk or harm experienced by an individual are unique to each situation and depend upon the surrounding environment, the way in which the individual works, the particular material being worked, work station design as well as upon the exposure time and the physical condition of the user . Mirka Ltd cannot be held responsible for the consequences of using declared values instead of actual exposure values for any individual risk assessment . ** Without dust bag and dust hose . Further occupational health and safety information can be obtained from the following websites: https://osha .europa .eu/en (Europe) or http://www .osha .gov (USA)

en Filter Regulator Figure 1 Lubricator Air hose to your power tool Proper use of tool This sander is designed for sanding all types of materials i .e . metals, wood, stone, plastics, etc . using abrasive designed for this purpose . Do not use this sander for any other purpose than specified, without consulting your Mirka dealer . Only use Mirka backing pads 125 mm (5") or 150 mm (6") that are designed for optimal performance with the brake seal . Never mount a backing pad without a spacing washer . Other backing pads may reduce performance and will increase vibrations . Work stations The tool is intended to be operated as a hand-held tool . It is always recommended that the tool should be used when standing on a solid floor . It can be used in any position but before any such use, the operator must be in a secure position, have a firm grip and footing and be aware that the sander can develop a torque reaction . See the section “Operating instructions” . Operating instructions When unpacking the tool, make sure it is intact, complete and has not been damaged in transport . Never use a damaged tool . To attach air supply, lift up the cover and connect air supply, close the cover before operating the tool . Use a clean lubricated air supply that will give a measured air pressure at the tool of 6 .2 bar (90 psig) when the tool is running with the lever fully pressed . It is recommended to use an approved 10 mm (3/8") x 8 m (25 ft) maximum length air hose . The tool should be connected to the air supply as shown in Figure 1 . Do not connect the tool to the compressed air system without incorporating an easy to reach and operate air shut- off valve . It is strongly recommended that an air filter, regulator and lubricator (FRL) are used as shown in Figure 1 as this will supply clean, lubricated air at the correct pressure to the tool . Details of such equipment can be obtained from your supplier . If such equipment is not used the tool should be manually lubricated . To manually lubricate the tool, disconnect the air hose and put 2 to 3 drops of supplied oil or Wurth art . no . 08930505 into the air connection on the tool . Reconnect the tool to the air supply and run the tool slowly for a few seconds to allow air to circulate the oil . If the tool is used frequently, lubricate it on a daily basis . Lubricate the tool before longer storage or if the tool slows down or loses power . It is recommended that the air pressure at the tool is 6 .2 bar (90 psig) while the tool is running . The tool can run at lower pressures but never higher than 6 .2 bar (90 psig) .

en Replacing the backing pad 1 . Insert the pad wrench between the backing pad and brake seal to hold the spindle nut . 2 . Turn the backing pad counterclockwise to remove it . 3 . Fit and tighten the new backing pad with washers . 4 . Remove the pad wrench . Pad saver Mirka's pad savers are designed to protect the backing pad from wear and tear, when sanding aggressively and continuously with net products . These cost effective pad savers, placed between the backing pad and the sanding disc, should be changed regularly . The pad savers prolong the life of the backing pad . https://www .mirka .com/accessories/pad-savers/ Replacing the brake seal NOTE! Too much vacuum in your dust extraction system may cause the brake seal to malfunction . 1 . Remove the backing pad as described above . 2 . Pull the old brake seal out of its groove . 3 . Fit the new brake seal in the groove . 4 . Fit the backing pad as described above . 5 . Check the brake seal function . By changing the number of washers between the spindle and backing pad, the effect of the brake seal can be adjusted . Replacing the muffler kit PROS CV/NV • Lift up the cover . • Remove the muffler cup by pushing it firmly to the side and insert a screwdriver between the cup and the hex nut, twist the screwdriver to release the cup from the housing . • Reattach new muffler to the housing . Further service Servicing must always be performed by trained personnel . To keep the tool warranty valid and ensure optimal tool safety and function, servicing must be carried out by a Mirka authorized service centre . To locate your local Mirka authorized service centre, contact Mirka Customer service or your Mirka dealer . Always disconnect the air supply before maintenance! Only use original Mirka spare parts! Maintenance

en Troubleshooting guide Symptom Possible cause Solution Low power and/ or low free speed. Speed control set to low speed . Turn the speed control to desired speed . Low air pressure . Check air supply (according to operating instructions) . Clogged muffler . Clean or replace the muffler . Plugged air inlet screen . Clean or replace the screen . Internal air leakage in the motor housing . Check motor assembly and alignment . Check air inlet O-ring alignment on motor assembly . Worn or broken vanes . Install a complete set of new vanes and rotor (Kit F) . Housing cracked or damaged . Contact Mirka authorized service centre . Worn or broken spindle bearing . Replace the worn or broken bearing (Kit A) . Air leakage at the speed control. Dirty, broken or bent valve spring, valve or valve seat . Disassemble, inspect and replace worn or damaged parts . Incorrect assembly of air valve . Remove air inlet connection and reassemble the air valve (207), with the valve stem (202) in its upper position . Vibration / rough operation. Incorrect backing pad . Only use Mirka backing pad 125 mm (5"), 150 mm (6") . Addition of interface or other material . Only use abrasive and/or interface designed for the machine . Damaged backing pad . Replace the pad . Only use Mirka backing pad 125 mm (5"), 150 mm (6") . Worn or broken motor bearing(s) . Replace the worn or broken bearings . Too much vacuum on a flat surface can increase vibrations . Lower the vacuum of your dust extraction unit . Low motor speed . Increase motor speed with flow regulator, max 6 .2 bar .

en Reducing vibrations when sanding with pad saver or interface When pad saver or interface is used for sanding the set-up may increase the level of vibrations . Your Mirka tool has a feature allowing you to reduce these vibrations . To reduce vibrations that may appear when a pad saver or interface is used please follow these steps: 1 . Disconnect air supply . 2 . Remove backing pad . 3 . Add hex nuts and screws in accordance with the table below, tighten to 2 Nm . NOTE! If the sander is used with an interface it is recommended that the speed is set to a maximum of 7,000 rpm . Example 1 . Machine configuration out of box . 3 . Machine configuration out of box . 2 . Machine configuration for use with pad saver or interface . 4 . Machine configuration for use with pad saver or interface . Model Picture Set-up out of box Screw Hex nut A B C D E A B C D E 550 1 – X X – – – – – – – 580 1 – X X – – – – – – – 625 1 – X X – – – – – – – 650 1 – X X – – – – – – – 680 3 – X – X X – – – – – Model Picture Set-up for pad saver / interface Screw Hex nut A B C D E A B C D E 550 2 X X X – – X X X – – 580 2 X X X – – X X X – – 625 2 X X X – – X X X – – 650 2 X X X – – X X X – – 680 4 X X X X X – – – – –

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