X
Too much grease in bearing
Remove surplus grease.
X
Wrong grease in the bearing
Use the correct grease.
X Friction marks on raceway
Replace the bearing.
X Brinelling or scoring
Replace the bearing. Avoid any vibration at standstill
8.7.5
Faults at the external fan
The following table shows the possible causes of and remedial measures for faults on forced-
ventilated machines.
Table 8-4
Cooling system faults
↓ High temperature rise with load
Possible causes of faults
Remedial measures
X
Wrong direction of rotation of the separately
driven fan
Check the electrical connections to the separately driven fan.
X
Separately driven fan is not running
Check the separately driven fan and its connections.
X
Reduced air flow
Check the air ducts; clean the machine.
Operation
8.7 faults
1LE5, 1PC4 shaft heights 280 ... 355
96
Operating Instructions, 11/2022, A5E41454666A