Grundfos SE 12-42 hp Service Instructions Manual page 9

4.3.1 Removing the cable
Maintenance and service work on explosion-proof
FM
products must be carried out by Grundfos or a
service workshop authorized by Grundfos.
1. Remove the screw (181a) in the cable entry (168).
2. Slightly lift the cable entry (168).
3. Using a screwdriver, disconnect both the signal wires and the
power wires from the terminal block (176a). See fig. 12.
Remember to mark the position of the wires carefully.
4. Remove the O-ring (157d).
Do not loosen the lower cable entry (168a) as this
will impair the water tightness.
Signal wires
Power wires
Fig. 12 Illustration of cable wires
5. Place the service tool for cable entry (D) in a vice.
6. Mount the cable entry (168) in the service tool for cable entry
(D).
7. Disconnect the signal wires from the molex plug using the
molex tool (A). Remember to mark the position of the wires
carefully. See fig. 12.
8. Unscrew the lower cable entry (168a).
9. Push the cable (181) together with the rubber seal (198) out of
the plug.
10. Remove the rubber seal (198), washers (198a and 198b) and
disc spring (198c) from the cable. See fig. 13.
11. Pull and remove the cable (181) from the cable entry.
168
198a
198
198b
198c
168a
168c
168b
Fig. 13 Sectional drawing, cable entry
4.3.2 Draining of motor liquid
See section
2.3 Changing the motor
4.3.3 Removing the motor top cover
Maintenance and service work on explosion-proof
FM
products must be carried out by Grundfos or a
service workshop authorized by Grundfos.
1. Remove the cable. See section
2. Drain the motor liquid. See section
liquid.
3. Remove the moisture absorbing bag from the cables.
4. Remove the six screws (178) including washers.
5. Remove the motor top cover (164a).
6. Remove the O-ring (157).
7. Remove the pressure test plug (25).
4.3.4 Removing the upper bearing bracket
Maintenance and service work on explosion-proof
FM
products must be carried out by Grundfos or a
service workshop authorized by Grundfos.
1. Remove screws (183).
2. Use 3 x M10 x 80 screws to lift up the bracket in a balanced
way, using the 0.433 in (11 mm) holes. See fig. 14.
3. Remove the upper bearing bracket (61).
Fig. 14 Upper bearing bracket
liquid.
4.3.1 Removing the cable.
2.3 Changing the motor
7/16 in
(M10)
0.433 in
(11 mm)
9