Grundfos MGE F Service Instructions Manual
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Grundfos MGE F Service Instructions Manual

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GRUNDFOS INSTRUCTIONS
MGE model F
Service instructions

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Summary of Contents for Grundfos MGE F

  • Page 1 GRUNDFOS INSTRUCTIONS MGE model F Service instructions...

  • Page 2: Table Of Contents

    4.7 Fault finding using alarm and warning codes 1.2 Notes Maintenance The symbols and notes below may appear in Grundfos 5.1 Lubrication of motor bearings installation and operating instructions, safety instructions and 5.2 Replacement of motor bearings service instructions.

  • Page 3: Scope Of Delivery

    If the fault cannot be remedied by means of these instructions, or you require spare parts or technical assistance, contact your nearest Grundfos partner or company. See the back of these service instructions. State the following information when you contact Grundfos to get help for fault finding: •...

  • Page 4: Identification

    2. Identification 2.1 Nameplates The MGE-F nameplate (fig. 1) is fitted on the side of the terminal box (fig. 2). 9 10 Type Serial No : TP 211 P.N. P.C. Env.Type : 3R PF : Made in Hungary INPUT OUTPUT in 1/1 13 14 15 16 17...

  • Page 5: Type Key

    Nameplates for standard motors with CE and UL approvals Fig. 4 Position of motor nameplates 2.2 Type key Example Motor Grundfos Electronically controlled Frame size according to IEC (centre line height of shaft of foot motor) [mm] Size of foot...

  • Page 6: Configuration

    See figs and 6. Fig. 6 Position of configuration label If the terminal box is replaced or mounted on another motor, it must be reconfigured. Contact Grundfos Service. Fig. 5 Configuration label 3. General description Rectifier Intermediate circuit...

  • Page 7: Wiring Diagrams And Signal Terminals

    3.1 Wiring diagrams and signal terminals The wiring diagram and the signal terminals depend on the pump application. Figures are examples of the different functional modules available. Refer to the figure corresponding to the functional module fitted. A: RS485 A Y: RS485 GND A: RS485 A B: RS485 B...

  • Page 8: Control Panel

    3.2 Control panel 3.3 Indicator lights WARNING Electric shock Death or serious personal injury - Make sure that the mains cover is fitted in MGE-F if you perform service work where fault finding with power on and/or with connection to PC Tool Link is needed.

  • Page 9: Fault Finding

    • 4.6 Fault finding using the indicator lights on the control panel • Check that the settings in Grundfos GO Remote match the • pump application. 4.7 Fault finding using alarm and warning codes The menu displays are described in detail in the installation •...

  • Page 10: Pc Tool E-Products As Service Tool

    PC Tool E-products can be used for fault correction of E-products, including the MGE-F. 4.4.1 Acquisition of PC Tool E-products PC Tool E-products can be acquired via the Grundfos GTI database. 4.4.2 Connecting the PC Tool Link to the MGE-F PC Tool Link is used for the physical connection between the PC and the MGE-F.

  • Page 11: Fault Finding Using The Indicator Lights On The Control Panel

    If Grundfos GO Remote is available, we recommend you to start differently from the indicator lights on the control fault finding via the fault codes.
  • Page 12 YES: The pump is OK. b) Does the setpoint setting correspond to the setpoint type installed? (0- 10 V, 0-20 mA, 4-20 mA) Correct the setting using Grundfos GO Remote or PC-Tool E-products. YES: Proceed to point c). Is the voltage to the setpoint connection 10 VDC?
  • Page 13 Has the correct setpoint type been set in the motor? (0-10 V, 0-20 mA, unexpectedly high or low 4-20 mA). speed. Correct the setting using Grundfos GO Remote or PC-Tool – Can be caused by fault in E-products. YES: installation, setting or Proceed to point b).
  • Page 14 The pump has stopped due to a fault The pump has been stopped due to one of the following See the fault indication on Grundfos GO Remote or PC Tool E-products. causes: 1. The pump is blocked or Remove the blockage, or reduce the load.

  • Page 15: Fault Finding Using Alarm And Warning Codes

    Too many restarts (from standby mode per 24) • The number of attempted restarts at 10-second Seek the cause under the fault log code numbers in Grundfos GO Remote or intervals after a fault has exceeded four within one PC-Tool E-Products.
  • Page 16 Fault code Fault reading in Grundfos GO Remote Fault reading in PC Tool E-products Fault type Explanation/cause Remedy Overload Motor current protection activated (MCP) The built-in motor-current protection function has registered a continued overload of more than 125 % of rated current for 60 seconds.
  • Page 17 Fault code Fault reading in Grundfos GO Remote Fault reading in PC Tool E-products Fault type Explanation/cause Remedy Sensor 2 signal outside signal range Sensor 2 signal fault Same as fault 88. Same as fault 88. Setpoint signal outside signal range...
  • Page 18 Fault code Fault reading in Grundfos GO Remote Fault reading in PC Tool E-products Fault type Explanation/cause Remedy Other fault Internal communication failure in frequency converter Internal communication fault in the pump due to defect Contact Grundfos Service. in the terminal box.

  • Page 19: Maintenance

    - Installation, commissioning, service, and the prescribed number of operating hours, it will give a lubrication maintenance of equipment, systems, and circuits warning that will appear on Grundfos GO Remote or PC Tool E- may only be performed by Grundfos service products. See section 4.

  • Page 20: Replacement Of Motor Bearings

    5.2 Replacement of motor bearings When the MGE-F has reached the prescribed number of operating hours, it will give a warning about replacement of bearings that will appear on Grundfos GO Remote or PC Tool E- products. See section 4. Fault finding.
  • Page 21 14. If the bearings are not prelubricated, lubricate the bearings according to instructions. See section 8.2 Lubricating intervals grease. 15. Confirm the replacement of the bearings using Grundfos GO Remote (or via PC Tool E-products). Fig. 17 Detail from fig. 24, exploded view of the MGE-F...

  • Page 22: Emergency Operation (Bypass)

    6. Emergency operation (bypass) If it is necessary to continue pump operation even if replacement or repair of the terminal box is not possible, establish emergency operation by connecting the motor direct to the mains supply. WARNING Electric shock Death or serious personal injury - Before starting any work on the product, make sure that the power supply is switched off and that it cannot be accidentally switched on.

  • Page 23: Establishing Emergency Operation

    6.1 Establishing emergency operation 1. Loosen the four screws in the terminal box cover, and remove the cover from the terminal box. 2. Remove the three mains supply conductors from the supply terminals, but leave the protective earth conductor in the PE terminal.

  • Page 24: Re-Establishment Of Frequency Converter Operation

    6.2 Re-establishment of frequency converter operation 1. Loosen the four screws in the terminal box cover, and remove the cover from the terminal box. 2. Remove the insulating tape, and separate one of the joints of motor conductors and supply conductor. Push the insulating hose down over the motor conductors again.

  • Page 25: Drawings And Diagrams

    7. Drawings and diagrams The position numbers in fig. refer to the list on page 25. Fig. 24 Exploded view, MGE-F...
  • Page 26 Pos. Description Fan cover Screw, fan cover 152a Rubber bushing Ball bearing, drive end Ball bearing, non-drive end 155a Inner bearing cover, drive end 155d Inner bearing cover, non-drive end 156a Bearing end shield, non-drive end 156b Bearing end shield, drive end 156c Circlip for fan O-ring, bearing, non-drive end flange...
  • Page 27 Pos. Description Terminal box cover Screw for terminal box cover 251a Terminal box, lower part 251b Terminal box top 251c Gasket for terminal box top 251d Screw for terminal box top 284a 251e Screw for terminal box top Cable entry block, complete Screw for cable entry block, Control panel 251e...

  • Page 28: Tightening Torques And Lubrication

    8. Tightening torques and lubrication 8.2 Lubricating intervals and grease Lubricating intervals, grease quantity and type appear from the 8.1 Tightening torques motor lubricating plate. Torque Pos. Description [Nm] Terminal box Screws for terminal box cover 251d Screws for terminal box top 251e Screws for terminal box top 284a...

  • Page 29: Service Tools

    9. Service tools Special tools Pos. Designation Supplementary information Product number Grundfos GO Remote 98046408 PC Tool E-products 96562869 Standard tools Pos. Designation Supplementary information Product number Puller Slotted screwdriver ® Torx screwdrivers (set) T20, T25 96884908 Hexagon socket screwdriver...
  • Page 31 GRUNDFOS Pumps (Hong Kong) Ltd. Turkey Brazil Norway Unit 1, Ground floor GRUNDFOS POMPA San. ve Tic. Ltd. Sti. BOMBAS GRUNDFOS DO BRASIL Siu Wai Industrial Centre GRUNDFOS Pumper A/S Gebze Organize Sanayi Bölgesi Av. Humberto de Alencar Castelo Branco, 29-33 Wing Hong Street &...
  • Page 32 96893745 12.2020 ECM: 1300816 www.grundfos.com...

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