Grundfos MGE F, Service Instructions Manual

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English (GB)
20
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
.
5.2.1 Removing the bearings
1. Remove the screws (pos. 152) holding the fan cover (pos.
151), and remove the fan cover.
2. Remove the retaining ring (pos. 156c) holding the fan (pos.
156).
3. Pull off the fan.
4. Remove the three screws (pos. 182a) holding the bearing
cover (pos. 155d).
5. Remove the screws (pos. 185a) holding the bearing end
shield in the non-drive end (pos. 156a).
6. Remove the bearing end shield in the non-drive end and the
spring (pos. 158).
7. Remove the screws (pos. 185) holding the bearing end shield
in the drive end (pos. 156b).
8. Carefully pull the bearing end shield in the drive end and the
shaft/rotor (pos. 172) out of the stator housing. Take care not
to damage the stator windings.
9. Remove the three screws (pos. 182) holding the bearing
cover (pos. 155a).
10. Remove the bearing end shield in the drive end using a puller
(pos. B).
11. Pull bearings (pos. 153 and 154) off the shaft using a puller. If
the drive end bearing is stuck in the bearing end shield, heat
up the bearing end shield, and press the bearing out by
pushing at it through the shaft hole.
12. Clean and check the bearing journals of the shaft and the
bearing seats of the bearing end shields.
Fig. 16 Detail from fig. 24 , exploded view of the MGE-F
TM
0
4
2
44
3 2
508