Grundfos Magna 32-120 Service Instructions Manual Download Page 15 | Manualshive

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4. Winding resistance

Pump

type

Terminal number

2-8

4-10

6-12

32-120

5.0

Ω

5.0

Ω

5.0

Ω

40-120

5.0

Ω

5.0

Ω

5.0

Ω

50-60

11.7

Ω

11.7

Ω

11.7

Ω

50-120

3.7

Ω

3.7

Ω

3.7

Ω

65-60

11.7

Ω

11.7

Ω

11.7

Ω

65-120

3.7

Ω

3.7

Ω

3.7

Ω

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Summary of Contents for Magna 32-120

Page 1: ... 2 Type key 2 2 Dismantling and assembly 3 2 1 Dismantling the pump 4 3 Fault correction 5 3 1 Fault finding 5 3 2 Fault correction procedure 8 3 3 Fault indications via R100 fault log 14 4 Winding resistance 15 The pump must be serviced by a qualified person Service must be carried out in accordance with local regulations and accepted codes of good practice ...

Page 2: ...ency 5 Maximum full load current 12 Liquid temperature limit 6 Maximum input power 13 Enclosure class 7 Mark of conformity 14 Insulation class Example MAGNA D 32 120 F N Model E Type range Twin head pump Nominal flange diameter mm Maximum head dm Pump housing with flanges Pump housing of stainless steel 32 120F P N 96513625 I1 1 A P1 W 0 15 1 55 345 22 PC 0116 Model E 1 230 240 V 50 60 Hz IP 44 TF...

Page 3: ...iquid may be burning hot and under high pressure Before assembly Gaskets and O rings should always be replaced when the pump is overhauled Clean and check all parts Order new O ring kits Replace defective parts by new parts The pump must be serviced by a qualified person Service must be carried out in accordance with local regulations and accepted codes of good practice ...

Page 4: ... inspection screw pos 1 and the four screws pos 2 in the stator housing see Fig 1 2 Lift off the stator housing pos 3 3 Remove the rotor and the O ring from the pump housing or stator housing 4 Check that the O ring pos 6 is intact If the O ring is damaged it must be replaced 5 Fit the rotor and the O ring on the pump housing 6 Put a tee key or a long screwdriver through the stator and hold the ro...

Page 5: ...gnal is available that the requested sensor signal is available 3 1 1 Printing of data registers The Grundfos R100 remote control enables the printing of status for the data registers by means of a Hewlett Packard infrared printer The purpose of this is to ensure that the service technician can print out the data registers before starting the fault finding so that this print stating the original f...

Page 6: ...p data registers 3 1 2 Fault log MAGNA Series 2000 pumps feature a fault log function The fault log function memory can recall the five latest faults The fault log can be read out via R100 The faults log cannot be reset States the type of fault code and time since the fault arose ...

Page 7: ...If the fault has not disappeared when attempts are made to remove the fault indication the indication will return in the display when communicating with the pump Alarm log The alarm log shows the fault code the fault indication and for how many minutes the pump has been con nected to supply voltage since the fault arose The five last fault indications are shown in the alarm log List of fault code ...

Page 8: ...on figuration of the terminal box See A1 3 Pump is running but making noise Cause may be Air in the pump Inlet pressure too low Vent the pump Increase the inlet pressure 4 Pump is running at too low or high pressure Is the pressure set cor rect Check the external 0 10 V signal See A2 Normal operational stoppage Pump is not running Pump has been stopped by means of the operating button via R100 via...

Page 9: ...cation of fault Pump is not running Pump has been stopped by means of the operating button via R100 via Grundfos GENIbus by the pump start stop function Pump can run however even if there has previously been a fault 1 GENI module if installed Max min 0 10 V inputs do not react Fault in internal communi cation to the module see B1 2 LON module if installed Pump does not react to changes from the LO...

Page 10: ...not control its performance optimally Explanation Configuration error The terminal box uses a wrong set of parameters Check remedy As the right and the left pump head do not have the same hydraulic performance there are a right and left set of parameters Correct configuration is carried out by means of the GENI modules where the Master module must always be fit ted on the right pump head Terminals...

Page 11: ... is connected Get assistance from the LON system administrator to change the operating conditions of the pump Does the pump react to this YES NO LON module is OK Replace the LON module Description Pump is running at normal performance Explanation The fault may be that setpoint changes cannot be stored Check remedy Change the setpoint by means of the operating buttons Is the new setting saved when ...

Page 12: ...ter The test is more than 95 reliable All three measurements must be OK 1 7 MΩ Approx 21 kΩ 1 7 MΩ ID 1 ID 2 ID 3 GND 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 U V W X Y Z Wire colours from HALL sensor in stator Black Red White Å HALL sensor in stator TM02 8950 1104 Fig 5 Numbering of the pump s terminal block 15 14 1 2 3 ...

Page 13: ...box fitted Combination 8 is free for a future pump type HALL sensor in stator 5V Output Black Red White Å Wire colours ID 1 ID 2 ID 3 GND 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 U V W X Y Z TM02 8950 1104 Fig 6 Numbering of the pump s terminal block 1 Coding definition Combination Pump ID 1 1 ID 2 3 ID 3 5 GND 13 1 Undefined No connections 2 32 120 O O 3 40 120 O O 4 50 60 O O O 5 65 60 O O 6 50 120 O...

Page 14: ...pply voltage from mains is too high Check that the supply volt age is in accordance with the data on the nameplate Pump will start automati cally when the fault has dis appeared and the red indica tor light is no longer on 7 90 Internal fault No fault indication Pump is running The terminal box registers no signal from the HALL sen sor in the stator Replace the stator Replace the terminal box When...

Page 15: ...inding resistance Pump type Terminal number 2 8 4 10 6 12 32 120 5 0 Ω 5 0 Ω 5 0 Ω 40 120 5 0 Ω 5 0 Ω 5 0 Ω 50 60 11 7 Ω 11 7 Ω 11 7 Ω 50 120 3 7 Ω 3 7 Ω 3 7 Ω 65 60 11 7 Ω 11 7 Ω 11 7 Ω 65 120 3 7 Ω 3 7 Ω 3 7 Ω ...

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