Metalfab SEW Eurodrive MOVIMOT MM..C - Manual (Page 143)

Operating Instructions – MOVIMOT® MM03C - MM3XC
143
11
Inspection and maintenance work on the motor
Inspection and Maintenance
Inspecting the
motor 1. Important: Isolate MOVIMOT
®
from the supply, safeguarding it against unin-
tentional power-up.
2. Remove proximity sensor NV16 / NV26 if installed.
3. Remove the flange cover or fan guard (19).
4. Remove the hexagon head cap screws (15) from the drive end bearing end shield
(5) and the non-drive end bearing end shield (14), release the stator (13) from the
drive end bearing end shield.
5. a) Motors with a brake
– Remove MOVIMOT
®
inverter, unfasten the brake cable from its terminals
– Push the non-drive end bearing end shield and the brake off the stator and care-
fully lift them off (if necessary, run the brake cable along with trailing wire)
b) Pull the stator back by approx. 3–4 cm.
6. Visual check:
Are there traces of gear oil or condensation inside the stator?
– If not, continue with 9.
– If condensation is present, continue with 7.
– If gear oil is present, the motor must be repaired by a specialized workshop.
7. a) Geared motors: Remove the motor from the gear unit.
b) Motors without a gear unit: Remove the drive end flange.
c) Remove the rotor (9).
8. Clean the winding, dry it and check it electrically.
9. Replace the ball bearings (7, 11) (use only approved ball bearings, see page 148).
10.Install a new oil seal (3) in the drive end bearing end shield.
11.Reseal the stator seat, reassemble the motor, brake, etc.
12.Check the gear unit, if applicable (see Gear Unit Operating Instructions).