Grundfos SE Service Instructions Manual
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Grundfos SE Service Instructions Manual

Range 56 18-41 kw, 50 hz
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GRUNDFOS INSTRUCTIONS
SE and SL pumps, range 56
18-41 kW, 50 Hz
Service instructions

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  • Page 1 GRUNDFOS INSTRUCTIONS SE and SL pumps, range 56 18-41 kW, 50 Hz Service instructions...
  • Page 3 SE and SL pumps, range 56 English (GB) Service instructions ............... . 4...

  • Page 4: Table Of Contents

    English (GB) Service instructions Original service instructions Table of contents General information ..............5 Hazard statements .

  • Page 5: General Information

    Read this document before you install the product. Installation and operation must comply with local regulations and accepted codes of good practice. 1.1 Hazard statements The symbols and hazard statements below may appear in Grundfos installation and operating instructions, safety instructions and service instructions. DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious personal injury.
  • Page 6 DANGER Electric shock Death or serious personal injury ‐ Before the installation, switch off the power supply and lock the main switch in position 0. DANGER Electric shock Death or serious personal injury ‐ It must be possible to lock the main switch in position 0. Type and requirements are specified in EN 60204-1. CAUTION Hot surface Minor or moderate personal injury...

  • Page 7: Receiving The Product

    3. Receiving the product The pump is supplied from the factory in a proper packaging in which it should remain until installation. Make sure that the pump cannot roll or fall over. Pump packaging 3.1 Transporting the product All lifting equipment must be rated for the purpose and checked for damage before lifting the pump. The lifting equipment rating must not be exceeded.

  • Page 8: Inspecting The Product

    Pos. 1, lifting handle Horizontal M, L, H Pos. 2, lifting eye in seal housing Lifting points for horizontal installation, SE pump Lifting point for vertical installation, SL pump 3.4 Storage During storage, the pump must be protected against moisture and heat.

  • Page 9: Identification

    Storage temperature is -20 °C to +55 °C. A maximum of 70 °C is allowed for short periods, not exceeding 24 hours, according to EN 60204-1. Do not remove the cable-end protectors until the cables are installed to protect them against moisture. If the pump is being stored for more than a month, turn the impeller at least every month to prevent the seal faces of the lower mechanical shaft seal from seizing up.

  • Page 10: Type Key

    Pos. Description Rated power input P1 Rated power output P2 Rated speed Cos φ, 1/1-load Rated voltage, delta connection Rated current, delta connection Rated voltage, star connection Rated current, star connection Frequency Insulation class Production code (YYWW) Weight 4.2 Type key Example: SL.56M.210.4.51D.200 Code Explanation...

  • Page 11: Design

    5. Design 5.1 Sectional views 66A 67 32 35A SL pump...
  • Page 12 164A 154A 152A 153C 153B 153B 158A 105B 183 155 412 193 SL pump...
  • Page 13 198C 157D 198B 168A 412 193 187A 1129 105A SL pump...
  • Page 14 230B 1 164A 154A 150B 152A 153C 153B 158A 105B SE pump...
  • Page 15 168C 198B 168B 198C 157D 168A 184B 168C 105A 1129 SE pump...

  • Page 16: Exploded View

    5.2 Exploded view 157d 198b 198c 168a 181s 105a 105b 164a 152a 153b 1129 153c 187a 158a 154a SL pumps...
  • Page 17 180A 168C 184B 168B 198B 198C 198A 150B 157D 2181 181S 150C 173G 173H 164A 105A 150B 152A 153B 153C 187A 158A SE pumps...

  • Page 18: Components And Material Specification

    5.3 Components and material specification Pos. Component Material Standard M8 x 16 Hexagon socket head cap screw A4-70 DIN 912 2.5 x 5 Round Head Rivets DIN 660 Impeller key 1.4571 DIN 6885 B M24 x 45 Set Screw A4-80 DIN 913 1/2"...

  • Page 19: Service Tools

    6. Service tools Standard tools Pos. Designation Part number Molex plug removal tool SV2117 Special tools Pos. Designation Description Locking-ring pliers Circlip range 122-400 mm Refractometer Shaft Seal Protection Tool PN 92900006 Centrifugal Cup pressing tool PN 92900012...

  • Page 20: Tightening Torques And Lubricants

    7. Tightening torques and lubricants Pos. Designation Quantity Dimension Torque [Nm] Lubricant Hexagon socket head cap screw M8 x 16 15 ± 3 Nm Thread-EZE Ultra Impeller key 12 x 20 x 70 Thread-EZE Ultra Set screw M24 x 45 Thread-EZE Ultra Plug ISO 228-G 1/2"...

  • Page 21: Electrical Connection

    8. Electrical connection EMC shielding of power and control cables must be connected and fixed by the operator. DANGER Electric shock Death or serious personal injury ‐ Unauthorised people must not have any access to this product. DANGER Electric shock Death or serious personal injury ‐...

  • Page 22: Wiring Diagrams

    8.1 Wiring diagrams 8.1.1 Sensor wiring diagram -t° -t° -t° Sensor connection, standard version Pos. Description 3 x PTO Moisture switch (motor top) Leakage switch 3 x PTC -t° J -t° -t° Sensor connection, version V1 3 x PTO Moisture switch (motor top) Pt100 (lower bearing) Common earthing for sensors Pt100 (upper bearing)
  • Page 23 SM113 -t° -t° -t° Sensor connection, version V2 3 x PTO Moisture switch (motor top) Pt100 (lower bearing) Supply input for sensor board from IO113 Common earthing for sensors Communication signal for IO113 Pt100 (upper bearing) Pt100 (stator winding) Vibration sensor Leakage switch 3 x PTC 8.1.2 Motor wiring diagrams...

  • Page 24: Motor Top Wiring Connections

    8.2 Motor top wiring connections 8.2.1 Standard sensor version Brown/MS2 Green/FS Grey/FS Blue/FS Brown/MS1 Item Component Item Description Terminal board Sensor cable - 10 core Moisture switch Connect the earthing cable to the upper bearing bracket Float switch Screening cable must be clamped to the terminal bracket Moisture switch wire 1 Stator Moisture switch wire 3...
  • Page 25 8.2.2 Sensor version V1 Sensor cable - 18 core Brown/MS Sensor cable - 18 core Grey/FS Green/FS Blue/FS Blue/PT100St Blue/PT100LB Blue/PT100UB...
  • Page 26 Item Component Terminal board Moisture switch Float switch with cable PT100 insulated temperature sensor PT100B temperature sensor PVS3 Vibration sensor Wire for moisture switch 1 Wire for moisture switch 2 Harness for float switch 2 Earthing cable Harness PT100 Wire for common grounding End sleeve DIN 46228-4 1-8 Stator...
  • Page 27 8.2.3 Sensor version V2 Terminal board Brown/MS orange blue-black 2TB1 2TP1 2TB2 2TP2...
  • Page 28 1 2 1 3 Grey/FS Blue/PT100LB Green/FS Resistor kit Blue/FS Blue/PT100LB White/PT100LB Item Component Item Description Terminal board Sensor cable - 10 cire SM113 module Moisture switch in motor top compartment Moisture switch Connection to upper bearings Float switch with cable Stator PVS3 vibration sensor SM113 module...

  • Page 29: Power Cable Data

    8.3 Power cable data Cable type Outer cable diameter [mm] Minimum bending radius min. max. [mm] 4 × 10 20.9 23.4 Standard power cable 4 × 16 23.8 26.3 4 × 25 28.9 31.4 4 × 10 23.1 25.1 4 × 16 26.6 29.6 Screened EMC power cable...

  • Page 30: Io 113 Module

    1. check that the overall circuit resistance is between 250-750 Ω. 2. check that the insulation between the circuit and the stator housing is outside the range. 3. carry out similar measurements at the end of the power cable. 8.8 IO 113 module The IO 113 module is the interface between a pump with analogue and digital sensors and the pump controller.

  • Page 31: Startup

    9. Startup Make sure the pump is connected to an overcurrent protective device. No automatic disconnection device is applied in the product. DANGER Electric shock Death or serious personal injury ‐ Make sure the pump is grounded. WARNING Electric shock Death or serious personal injury ‐...

  • Page 32: Maintenance And Service

    10. Maintenance and service DANGER Electric shock Death or serious personal injury ‐ Before starting any work on the product, make sure that the power supply is switched off and it cannot be switched on unintentionally. CAUTION Crushing hazard Minor or moderate personal injury ‐...

  • Page 33: Pump Overhaul

    ‐ Flush the pump thoroughly with clean water and rinse the pump parts after dismantling. Before returning the product for service, contact Grundfos with details about the pumped liquid. Otherwise, Grundfos can deny to service the product. Any application for service must include details about the pumped liquid.

  • Page 34: Motor Liquid Check And Change

    Do not lift or move the pump by the shaft end. Never rest a vertically tilted pump on its impeller. 10.5 Motor liquid check and change Clean the outside of the pump regularly to retain the heat conductivity. Change the motor liquid once a year or after 12.000 operating hours to prevent oxidation. The ingress level of the pumped liquid into the motor liquid can be checked.
  • Page 35 2. Place a container under the filling hole (above 13 liter capacity). 3. Remove the filling plug and drain the motor liquid from the seal housing. 10.5.2 Fill motor liquid on SL pumps 1. Place the pump in vertical position. 2.

  • Page 36: Disassembly

    11. Disassembly Before disassembling the pump: • Switch off the power supply • Close the isolating valves, if fitted, to avoid draining the pipe system. • Disconnect the power supply cable from the pump. • Note the pump's centre of gravity to prevent it from turning or rolling over. 11.1 Remove the motor top cover 1.

  • Page 37: Remove Power And Sensor Cables

    11.2 Remove power and sensor cables 1. Detatch the signal wires from the terminal board. Apply a screwdriver on the marked holes to release the terminal clamps. 2. Remove the wire fixing plastic clips, highlighted below. 3. Remove the sensor cable clamps (409). 4.
  • Page 38 5. Remove the power cables from the main terminal board. a. Remove the M8 nuts and flat washers (A). b. Remove all power cables. (B) 6. Detatch the earth cable(s). 230B 7. Remove the power cable fixing clamps (409). 8. Power cables can be safely removed from the pump now. 9.

  • Page 39: Separate The Motor From The Pump Housing

    11.3 Separate the motor from the pump housing 1. Attach the motor top cover (164) with the lifting handle to the stator housing. This is necessary to provide a safe lifting point! 2. Undo and remove the six M16 screws (67), together with the washers (67B). 3.

  • Page 40: Pump Housing Disassembly

    11.4 Pump housing disassembly 1. Insert two lifting eyes into two holes on the discharge flange. 2. Use a crane to turn the discharge flange, by the lifting eyes, to an upside-down position, so the bottom screws become accessible. 3. Remove eight hex-head M16 x 50 screws (67) and their washers (67B) from the suction (12) flange. 4.

  • Page 41: Motor Disassembly

    11.5 Motor disassembly 11.5.1 Motor top disassembly 1. Remove the Brown wire from the moisture switch (520). 2. Remove all wires, except for the earth wire (Yellow-Green) from the bottom row of the terminal block (176). 3. Remove the EMC cable clamp from the wire termination bracket (522).
  • Page 42 11.5.2 Upper bearing bracket removal 1. Remove 3 M10x25 hex-head screws (183) from the upper bearing bracket (61). 2. Lift the upper bearing bracket (61) off the motor. Make sure the wave spring (152A) cannot fall into the motor during removal. 3.
  • Page 43 4. Remove the wave spring (152A). 152A 5. Clamp together the power wires and fix them to the stator housing so they cannot be damaged when the motor is turned upside-down. 6. Clamp together the signal wires and fix them to the stator housing so they cannot be damaged when the motor is turned upside-down.
  • Page 44 7. Turn the motor upside down. Use lifting eyes fixed to the positions shown below.
  • Page 45 11.5.3 Impeller removal 1. Remove the impeller plug (67A). 105B 2. Remove the M16 x 120 screw (67) and its washer (67A) holding the impeller. 3. Use a plastic hammer to carefully knock around the marked upper edges of the impeller (49), to make it loosen up on the shaft end.
  • Page 46 4. Use two crowbars opposite of each other, and concentrically reach under the impeller. Push the impeller up to remove it. 5. Remove the impeller (49) from the shaft end. 6. Remove the latches (9A) from the grooves in the shaft end. 7.
  • Page 47 11.5.4 Shaft seal removal 1. Remove the 4 M10x25 screws (183). 2. Lift off the lower seal housing (77). 3. Remove the O-ring (39B). 4. Clean the shaft end, to ease the removal of the shaft seal. 5. Remove the 3 M6x16 screws (105A). 6.
  • Page 48 11.5.5 Upper seal housing removal 1. Remove the 8 M16x70 screws (67). 2. Lift off the upper seal housing. Do NOT use the marked three threaded holes as lifting points. 3. Remove the O-ring (39).
  • Page 49 11.5.6 Shaft with rotor assembly removal 1. Remove the O-ring (39). 158A 2. Remove the 4 M10x25 screws (183). 3. Fix the lifting eye into the threaded hole of the shaft end. 4. Lift the rotor with shaft, together with the lower bearing housing, out of the stator housing. During the lifting process, make sure that the inner cable harness can not be damaged, torn or pinched between the rotor and the stator housing.
  • Page 50 7. Screw out the float switch, then after pulling the cable connectors apart, remove it. 8. Remove the centrifugal cup (158). 9. Change the O-ring (158A) inside the centrifugal cup 158A...
  • Page 51 11.5.7 Bearing cover removal 1. Remove the 4 M10x25 screws (183). 2. Lift the bearing cover (59) off of the lower bearing bracket. 3. Remove the radial shaft seal (401) from the bearing cover.
  • Page 52 11.5.8 Lower bearing bracket removal 1. Remove the O-ring (59A). 2. Screw the lock nut (187) off of the shaft. 3. Remove the lock washer (187A). 4. Clean the shaft end of any contamination. 5. Pull off the lower bearing bracket (155). 187A...
  • Page 53 11.5.8.1 Lower bearing bracket disassembly Remove the following from the lower bearing bracket: 153C 153B • Bearings - 152 152B - 153 - 153B - 153C • Washers - 152B - 152A • O-ring (400) 152A...
  • Page 54 11.5.9 NDE bearing removal 1. Remove the NDE bearing (154) from the shaft (172). Use a bearing puller. Make sure the shaft does not get damaged during the bearing removal.
  • Page 55 11.5.10 Stator removal from the stator housing 1. Cut the stator wires off. 2. Turn the stator housing upside-down. 3. Heat the stator housing up to max. 210 °C for max. 10 minutes, or until the stator slides out / moves downwards. 4.

  • Page 56: Assembly

    12. Assembly Before assembling the pump: • Clean and check all parts. • Replace defective parts with new parts. • Use the Exploded view to follow the alignment grooves in order to place the components together correctly. • Order the necessary service kits. •...

  • Page 57: Stator Insertion

    12.1 Stator insertion Before stator insertion, perform stator resistance check according to the following: Resistance test [2D] Check stator resistance before inserting the stator into the stator housing. Use 4-wire handheld measuring tool to check the resistance of each phase according to the figure: Line - Line measuring points 1-4, 2-5, 3-6...
  • Page 58 3. Heat up the stator housing (55). If possible, use a furnace to ensure even heating. WARNING Hot surface Death or serious personal injury ‐ Do not touch the heated parts surfaces. Wear protective clothing. External surface temperature. Must not exceed 210 °C and must be maintained for a maximum of 15 minutes.

  • Page 59: Nde Bearing Mount

    12.2 NDE bearing mount 1. Heat up the NDE bearing (154) to 90-110 °C. Use an induction heater or hot air blower gun. 2. Press the bearing down on the end of the shaft with rotor assembly (172). WARNING Hot surface Death or serious personal injury ‐...

  • Page 60: Lower Bearing Bracket Assembly

    12.3 Lower bearing bracket assembly 1. Lubricate the O-ring (400), then put it in the bearing bracket. 2. Mount the wave spring washer (152A) 3. Grease the bearing seat. Use anti-seize grease. Press on only the outer ring when fitting the bearing into the bearing bracket! 4.
  • Page 61 7. Grease the first bearing (153) or apply grease between the inner and outer dummy bearing according to the figures below. Correct bearing orientation if P2 < or = 41 kW Correct bearing orientation if P2 > 41 kW 100% grease filling 50% grease filling Press on only the outer ring when fitting the bearing into the bearing bracket! 8.

  • Page 62: Mounting The Lower Bearing Bracket On The Rotor Shaft

    12.4 Mounting the lower bearing bracket on the rotor shaft 1. Mount the assembled lower bearing bracket on the shaft. 187A 2. Mount the lock washer (187A) 3. Apply grease on the thread on the shaft end. 4. Mount the lock nut (187). 5.
  • Page 63 7. Mount the lubricated O-ring (59A). Press on only the inner ring when fitting the bearing into the bearing bracket! Related information 7. Tightening torques and lubricants...

  • Page 64: Bearing Cover Assembly

    12.5 Bearing cover assembly 1. Mount and press the radial shaft seal (401) into the bearing cover (59). Use the insertion tool. The check mark indicates the proper orientation of the shaft seal. Apply grease to the marked area 2. Apply grease on the lip of the radial shaft seal and on the shaft. Greasing areas are indicated on the image above. 3.

  • Page 65: Centrifugal Cup Assembly

    12.6 Centrifugal cup assembly 1. Lubricate the O-ring (158A) then insert it into the Centrifugal cup. 158A 2. Mount the copper seal on the float switch (403). Copper seal 3. Apply grease to the gap between the lip seal and centrifugal cup. The area is marked on the image below. 4.
  • Page 66 5. Mount the grease nipple (402) on the lower bearing bracket (155). 6. Pull the float switch (403) cable through the threaded hole on the lower bearing bracket first, then mount the float switch on the bearing bracket. 7. Connect the AMP connector on the float switch cable end. 8.

  • Page 67: Shaft With Rotor Assembly Insertion

    12.7 Shaft with rotor assembly insertion 1. Connect the AMP connector of the float switch (403) to the plug of the signal wire. Signal wire Cable tie Wire cover 2. Check the electrical connection and the float switch function with a multimeter, at the free end of the signal wire. 3.
  • Page 68 8. Mount the O-ring (39). 158A Related information 7. Tightening torques and lubricants...

  • Page 69: Upper Seal Housing Assembly

    12.8 Upper seal housing assembly 1. Put in the lower plugs (412, 193). Tighten them to the required torque. 2. Insert the upper plug (412). Only tighten it to required torque after the cooling liquid has been filled in, later. Related information 7. Tightening torques and lubricants...

  • Page 70: Mounting The Assembled Upper Seal Housing

    12.9 Mounting the assembled upper seal housing 1. Lift and mount the upper seal housing on the stator housing. Do not use the three marked threaded hole for lifting! The fixing screw of the lower bearing bracket will help to properly orientate the upper seal housing. 2.

  • Page 71: Mounting The Shaft Seal

    12.10 Mounting the shaft seal 1. Grease and mount the O-ring (39B). 105A 2. Grease the inside of the upper seal housing (58), on the shaft seal bushings, and grease the two O-rings outside of the shaft seal (105). 3. Clean the shaft (172) and the inside of the shaft seal (105) with soapy water. 4.

  • Page 72: Mounting The Upper Bearing Bracket

    12.11 Mounting the upper bearing bracket 1. Turn the motor upside down and fix it in place so it cannot tilt or fall over. Use lifting eyes and lifting ropes. Make sure the wires cannot be pinched or damaged. 2. Grease and insert the wave spring (152A) into the upper bearing bracket (61). 152A 3.
  • Page 73 7. Insert the screws (183) into the upper bearing bracket and tighten them to the required torque. 8. Pull the power leads through the cable glands (28). Sensor wires Power wires Correct orientation 9. Pull the sensor wires through their separate cable gland. 10.

  • Page 74: Mounting The Impeller

    12.12 Mounting the impeller Place the assembled motor into horizontal position, and fix it against rolling or moving. Make sure that during the assembly procedure, the cables or wires are not damaged. 1. Mount the shaft seal protector (105B) and push it all the way down on the shaft. It must fit into the grooves on the shaft end. 105B 2.
  • Page 75 7. Insert the impeller plug (67A) to cover the impeller screw. 8. Check the impeller run-out with a dial indicator. Related information 7. Tightening torques and lubricants...

  • Page 76: Pump Housing Assembly

    12.13 Pump housing assembly 1. Grease and mount the O-rings (37C and 37D) on the suction cover (12A). 2. Preassemble the suction flange (12) with the suction cover (12A) using the fixing screws (35A) and washers (32). 3. Tighten all fixing screws to the required torque. The gap between the suction cover and the suction flange (G) must be 0 mm. 4.
  • Page 77 11. Insert and tighten the drainage plug (20) and pressure plug (193) with the required torque. 1129 Related information 7. Tightening torques and lubricants...

  • Page 78: Mounting The Motor On The Pump Housing

    12.14 Mounting the motor on the pump housing 1. Grease and mount the O-ring (39B) on the lower seal housing groove of the motor. Motor housing Hydraulics Alignment grooves 2. Place at least three lifting eyes into the threaded holes marked below. 3.
  • Page 79 4. Insert the screws (67) and washers (67B) then tighten them. Follow the tightening sequence below. 5. Lubricate the blind holes (L) and insert all plug screws (410) as it is shown below. Related information 7. Tightening torques and lubricants...

  • Page 80: Terminal Bracket Assembly

    12.15 Terminal bracket assembly 1. Mount the bracket for screen termination (522) on the bracket for wire termination (522) with screws (105A) and serrated lock washer (27.) 105A 1084 176C 2. Mount the terminal board (226) on the assembled bracket for wire termination (522) with screws (93). 3.

  • Page 81: Motor Top Internal Wiring

    12.16 Motor top internal wiring Always check the appropriate connection diagram before working on the wiring! 1. Connect the stator power leads to the main terminal board (93). Use M8 nuts (406) and washers (405). 2. Connect the preassembled earth wire to the sensor terminal board (176). 3.

  • Page 82: Cable Assembly

    12.17 Cable assembly 1. Pull the upper cable inlet (168) and the O-ring (157D) on the motor end of the power and sensor cables. 157D 2. Pull the cable through the remaining cable entry parts according to the image below. 198B 198C 198B...
  • Page 83 4. Fasten the upper cable entry (168) and tighten the lower cable entry (168A). Follow the distances from the striped cable end according to the image below. Screened cable version Standard cable version 181S 181B 181S 181B 5. Pull the motor end of the preassembled cables through the corresponding holes of the motor top (164A) 6.

  • Page 84: Mounting The Power And Sensor Cables

    12.18 Mounting the power and sensor cables 1. Pull the power cable cable bullets through the bullet holder of the bracket for wire termination (522). The cable bullets must be positioned next to the main terminal board (226). Cable bullet assembly Stripped cable end in case of EMC cable 2.
  • Page 85 5. Mount the earth wire of the power cables to the the bracket for wire termination (522) with serrated lock washer (230B), spring lock washer (89A) and screw (1) according to the image below. 230B Each power cable's earthing wire has got a dedicated place on the bracket for wire termination (522), on the opposite side of the cable. 6.

  • Page 86: Motor Top Cover Assembly

    12.19 Motor top cover assembly 1. Grease and mount the O-ring (62) on the upper bearing bracket of the motor assembly. 2. Carefully lift the motor top cover (164A) up and place it on the motor assembly. Check the correct orientation of the motor top. Avoid the inner wires, not to pinch them in the process.
  • Page 87 3. Insert the screws (67) and serrated lock washers (67B) to the motor top cover (164A) and tighten them to the required torque. Tightening sequence: 4. Grease the cable inlet O-rings (157D) and mount the cable bullets. 157D 5. Mount the upper cable inlet parts (168) on the motor top cover (164A) with its screws (183). 6.
  • Page 88 7. Mount and tighten the seal plug (193) until stop. The plug must be tightened to the required torque after the pump went through the leakage test. Related information 7. Tightening torques and lubricants 8.2.1 Standard sensor version 8.2.2 Sensor version V1 8.2.3 Sensor version V2...

  • Page 89: Impeller Clearance Inspection

    13. Impeller clearance inspection ® For pumps fitted with open S-tube , the impeller clearance is the distance between the bottom of the impeller and the suction cover. The correct impeller clearance is required to maintain the hydraulic performance of the pump and to prevent clogging. CAUTION Hot surface Minor or moderate personal injury...
  • Page 90 SE impeller clearance screws SL impeller clearance screws Pos. Description Set screws Fastening screws 13.1.1 Impeller clearance adjustment - in case of minor maintenance when the pump remains in application Tighten the set screws carefully to avoid bearing damage. The following method is suitable for pumps in horizontal position.
  • Page 91 4. Tighten the fastening screws, required torque is 50 ± 5 Nm. Impeller clearance (1) is set. Pos. Description Tip gap between impeller and suction cover, must be 0.5 ± 0.1 mm. Indirect gap for control measurement Clearance gaps 5. Start the pump and listen if there is any noise from the impeller touching the suction cover. a.
  • Page 92 6. Tighten the fastening screws, required torque is 50 ± 5 Nm. Impeller clearance (1) is set. Check clearance size with the gap gauge again, to ensure the setting did not alter during the tightening of screws. Pos. Description Tip gap between impeller and suction cover, must be 0.5 ±...

  • Page 93: Leakage Test

    14. Leakage test 1. Remove the seal plug (193) from the motor top cover. 2. Seal the power and sensor cable user ends, possibly with heat sinks. 3. Pressurize the motor top compartment with 0.6 bar pressure through the open seal plug hole, for 5 minutes. THe pressure medium must be either N or dried air.
  • Page 94 5. Remove the filling plug (412). 6. Pressurize the seal housing with 0.6 bar air pressure through the open filling plug hole. Keep the pressure on 0.6 bar for 5 minutes. The natural moisture of compressed air may trigger the moisture switch inside the motor top compartment. Use N or dried air for the pressure test.

  • Page 95: Ground Continuity Test

    15. Ground continuity test Check the ground continuity between the user end of power cable ground wire and the metal housing. Repeat the test with the same parameters two times. 1. Use lifting handle as metal housing point. 2. Use any of the screws highlighted as a metal housing point. Cable length must be compensated for if it is longer than 10 meters.

  • Page 96: Insulation Resistance Test

    16. Insulation resistance test Insulation resistance must be measured between common phase wires and the protecting earth (grounding) wire. in case of DOL: U+V+W - PE in case of Y/D: U1+U2+V1+V2+W1+W2 - PE Test duration 60 [s] TEST_ISOTEST_DURATION_S Test voltage 1000 TEST_ISOTEST_VOLTAGE_SETPOINT Test voltage upper limit...

  • Page 97: List Of Power Cables

    17. List of power cables Poles Pump P2 [kW] Frequency [Hz] Voltage Standard cable EMC cable 3 x 35 + 3G16/3 3 x 35 + 3G16/3 4 x 16 mm 4 x 25 mm 3 x 25 + 3G16/3 3 x 35 + 3G16/3 32.5 4 x 25 mm 32.5...
  • Page 98 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 99 92876305 07.2023 ECM: 1373084 www.grundfos.com...

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