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Grundfos MGE Instructions Manual
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Grundfos MGE Instructions Manual

Grundfos MGE Instructions Manual

With safe torque off (sto) functionality
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GRUNDFOS INSTRUCTIONS
MGE, MLE Model J
With Safe Torque Off (STO) functionality
Service instructions

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Summary of Contents for Grundfos MGE

  • Page 1 GRUNDFOS INSTRUCTIONS MGE, MLE Model J With Safe Torque Off (STO) functionality Service instructions...
  • Page 3 MGE, MLE Model J English (GB) Service instructions ............... . 4...
  • Page 4 Bluetooth (BLE)......22 Configuring the drive using Grundfos GO Link ..23 Maintenance .
  • Page 5 1. General information 1.3 Safety information for working on the product These service instructions apply to MGE and MLE model J motors. Read this document before you start service work on the product. Service work must comply with local regulations The safety instructions for this product and for the system and accepted codes of good practice.
  • Page 6 VARIANT VARIANT Typ e : P.C. : INPU T OU TPU T P.N. : Seria l no : FM : DE : Env .Type : TEFC n ma x : N DE: SF Amp W gt : a m b DK-8850 Bjerringbro Denmark Before dismantling DANGER...
  • Page 7 2. Torques Pos. Designation Type Dimensions [mm] Torque [Nm] T×25 12 × M5 3.5 - 4 T×30 16/10 × 60 T×25 M5 × 233 4.5 - 6 T×30 M6 × 233 5 - 7 T×30 16 × M6 T×30 14 × 6 T×30 Torx screw T×40...
  • Page 8 4. Service tools Standard tools Special tools...
  • Page 9 Punch D25 156c 98394719 Punch D30 156c 98394720 Punch D35 156c 99124636 Punch D40 156c 99124641 Punch D45 156c 99124643 Puller for bearing 153, 154 Puller for rotor 99197365 Flange mounting tool for MGE 132/160 99110656 Related information 1. General information...
  • Page 10 5. Megging An installation with MGE motors must not be megged as this may damage the built-in electronic parts. Motor windings may, however, be megged if the terminal box has been removed. Never measure between two terminals. 1. Disconnect the power supply.
  • Page 11 7. Lifting the product WARNING Back injury Death or serious personal injury ‐ Use lifting equipment and follow local regulations when lifting the product. WARNING Falling objects Death or serious personal injury ‐ Use lifting equipment rated for the weight of the product.
  • Page 12 8.5 Replacing the battery 8.6 Replacing the functional module 8.7 Replacing the power board 8.8 Replacing the terminal box 9.1 Connection to the drive by means of Grundfos GO Link using Ethernet connection 9.2 Connection to the drive by means of Grundfos GO Link using PC-Tool Link 8.
  • Page 13 8.3 Replacing the CIM module 1. Disconnect the power supply. 2. Remove the terminal box cover (251b). 3. Remove the plug connection for the CIM module (502). 4. Remove the cover of the CIM module (287) by pressing the locking tab (A) and lifting the end of the cover (B). Then lift the cover off the hooks (C).
  • Page 14 8.4 Replacing the isolation cover 8.6 Replacing the functional module 1. Disconnect the power supply. The Safe Torque Off (STO) safety function cannot be 2. Remove the terminal box cover. retrofitted to older motors. See the section on component compatibility. 3.
  • Page 15 8.7 Replacing the power board 8.8 Replacing the terminal box If the power board is to be replaced, the entire lower part of the 1. Disconnect the power supply. terminal box must be replaced. 2. Remove the terminal box cover. 1.
  • Page 16 8.9 Replacing the stator housing 8.11 Replacing the bearings on motors with stay bolt assembly 1. Disconnect the power supply. 8.11.1 Dismantling 2. Remove the screws (178) and take the terminal box (251a and 251b) out of the stator housing (150). 1.
  • Page 17 11. Place the rotor on the vice. Do not tighten the vice on the rotor! 8.11.2 Assembly CAUTION Hot surface Minor or moderate personal injury ‐ Use heat-resistant gloves. CAUTION Crushing of hands Minor or moderate personal injury ‐ Watch your fingers when you insert the rotor, as the magnet will pull rotor and stator together with big Correct position of the rotor on the vice force.
  • Page 18 9. Fit the locking ring (187) so that the bearing is held by the 21. Fit the seal rings (156c and 156d) or the gamma rings (159d flange. and 159e) on the drive end and non-drive end of the shaft. Use a punch.
  • Page 19 8.12 Replacing the bearings on motors with short bolt 8.12.2 Assembly assembly CAUTION 8.12.1 Dismantling Hot surface Minor or moderate personal injury 1. Disconnect the power supply. ‐ Use heat-resistant gloves. 2. Remove the stator housing from the terminal box. 1.
  • Page 20 14. Fit the locking ring (188). 15. Fit the drive-end flange (156b). Use a thin pin to align the holes of the bearing plates (155) with the holes of the flange. 22. Fit the parallel key (172a) on the drive end of the shaft. 23.
  • Page 21 10. Support the motor so that it rests on the drive end of the shaft. 11. Lubricate the new gamma ring (159e) and fit it on the non-drive end of the shaft. 12. Gently knock the ring home with the relevant punch. The distance between the stator housing (150) and ring must be 0.8 to 1.3 mm.
  • Page 22 Procedure 9.1 Connection to the drive by means of Grundfos GO 1. Turn on the MI301. Link using Ethernet connection 2. Open Grundfos GO Link and connect to the pump using either Equipment Direct connect or Radio scan. • Grundfos GO Link, version 01.02.00 or newer 9.4 Connection to the drive by means of Grundfos GO...
  • Page 23 9.5 Configuring the drive using Grundfos GO Link 10. Maintenance The GO Link configuration must only be carried out by 10.1 Lubricating the bearings service technicians trained in the task and possessing at Lubricate the bearings through the grease nipples with a grease least Service Engineer level access.
  • Page 24 11. Fault finding 11.1 General information 1. Check the mains supply to the pump. 2. Read fault messages by means of Grundfos Eye, Grundfos GO, Grundfos GO Link or the graphical operating panel, if fitted. Make a copy of motor settings.
  • Page 25 11.2 Fault and warning signals The fault indication below can be read by the number in brackets, text or status indications on the operating panel, depending on the equipment available. Grundfos Eye Cause Remedy External fault (3) • Check the parameter or the unit reporting the An external signal reports an external fault external fault.
  • Page 26 Grundfos Eye Cause Remedy Pump communication fault (10) There is a communication fault between • Make sure that all pumps of the multi-pump this pump and the other pumps of the multi- system are correctly set. pump system. Forced pumping (29) •...
  • Page 27 Grundfos Eye Cause Remedy Replace the motor bearings (30) • Replace the bearings. Follow the instructions for the pump. The bearings are worn. See the relevant section on bearing replacement in the service instructions. Internal sensor fault (88) • Check that the plug and cable are connected The pump receives a signal from the correctly to the sensor.
  • Page 28 11.3 Functional module WARNING Electric shock Death or serious personal injury ‐ Do not touch the terminals of the power board as they are still live. ‐ Do not touch the relay RL1 as it may still be live. Measuring equipment must be free of static electricity or have the same potential as the motor before being used for measurement without isolation cover.
  • Page 29 Measure the voltage across the input and read the current in the 14.5 15.1 15.7 circuit by means of Grundfos GO or PC Tool. The current value must be equal to voltage divided with resistance. Alternatively, a milliammeter can be connected in series with the circuit. 23.9 24.9...
  • Page 30 Radio See the settings of the input in PC Tool. If there are problems in the radio connection between Grundfos Connect the digital input to frame (GND) by means of an ammeter. GO and the motor, remove the terminal box cover. See the section The value measured must now be approximately 12 mA.
  • Page 31 11.4 Power board WARNING Electric shock Death or serious personal injury ‐ Do not touch the terminals of the power board as they are still live. Measuring equipment must be free of static electricity or have same potential as the motor before being used for measurement without isolation cover.
  • Page 32 11.5 Winding resistance As the motor is star-connected, the easiest way to measure the winding resistance is to measure across two phases. Measure at the coil temperatures stated in the table below. It may be necessary to let the motor cool off if it has been running or if it was stopped because of short circuit or overload.
  • Page 33 Power [kW/hp] 20 °C 60 °C 80 °C 1.5 / 2 0.75 / 0.86 0.86 / 0.99 0.92 / 1.06 MGE 90, 3400-4000 3 × 200-240 MLE 90 2.2 / 3 0.90 / 1.04 1.04 / 1.20 1.11 / 1.28 3 ×...
  • Page 34 12. Exploded view 251d 251b 287a 277a 277b 273b 273a 286a 289a 275a 268a 288b 251a 156d 288a 159e 156a 172a 156b 201c 156c 201a 159d Frame sizes 90, 100, 112 and 132 with stay bolt assembly of stator house...
  • Page 35 251d 251b 287a 277a 277b 286a 273b 273a 275a 289a 268a 288b 251a 156d 288a 207a 155a 151b 150b 159e 207b 200b 200a 156a 208b 189a 172a 189b 156b 150b 156c 201b 201a 201c 208a 159d Frame sizes 132 and 160 with short bolt assembly of stator house...
  • Page 36 This product or parts of it must be disposed of in an environmentally sound way. 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. 3. Dispose of the waste battery through the national collective schemes.
  • Page 37 Unit 1, Ground floor, Siu Wai industrial Turkey www.ba.grundfos.com Centre GRUNDFOS Pumps NZ Ltd. GRUNDFOS POMPA San. ve Tic. Ltd. Sti. E-mail: grundfos@bih.net.ba 29-33 Wing Hong Street & 68 King Lam 17 Beatrice Tinsley Crescent Gebze Organize Sanayi Bölgesi Street, Cheung Sha Wan...
  • Page 38 93222219 09.2024 ECM: 1399780 www.grundfos.com...

This manual is also suitable for:

Mle j