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X
Too much grease in bearing
X
Wrong grease in the bearing
X
Friction marks on raceway
X
Brinelling or scoring
9.7.5
Faults at the external fan
The following table shows the possible causes of and remedial measures for faults on forced-
ventilated machines.
Table 9-4
Cooling system faults
↓ High temperature rise with load
Possible causes of faults
X
Wrong direction of rotation of the separately
driven fan
X
Separately driven fan is not running
X
Reduced air flow
9.8
Deactivating
Commission any devices provided for protection against condensation after switching off the
machine.
1FU9
Operating Instructions, 10/2023, A5E46712792A
Remove surplus grease.
Use the correct grease.
Replace the bearing.
Replace the bearing. Avoid any vibration at standstill
Remedial measures
Check the electrical connections to the separately driven fan.
Check the separately driven fan and its connections.
Check the air ducts; clean the machine.
Operation
9.8 Deactivating
101
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