Lenze MDxMA-MHxMA-MFxMA-MDERA-MHERA Three-phase AC motors - Manual (Page 44)

Maintenance/repair
Important notes
8
l
44 BA 33.0005−EN 2.0
8 Maintenance/repair
8.1 Important notes
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Danger!
Hazardous voltage on the power connections even when disconnected from
mains: residual voltage >60 V!
Before working on the power connections, always disconnect the drive
component from the mains and wait until the motor is at standstill.
Verify safe isolation from supply!
Shaft sealing rings and roller bearings have a limited service life.
Regrease bearings with relubricating devices while the lowvoltage machine is running.
Only use the grease recommended by the manufacturer.
If the grease drain holes are sealed with a plug, (IP54 drive end; IP23 drive and nondrive
end), remove plug before commissioning. Seal bore holes with grease.
8.2 Maintenance intervals
Inspections
ƒ If the machine is exposed to dirt, clean the air channels regularly.
8.2.1 Motor
ƒ Only the bearings and shaft sealing rings become worn.
– Check bearings for noise (after approx. 15,000 h at the latest).
ƒ In order to prevent overheating, remove dirt deposits on the drives regularly.
ƒ We recommend carrying out an inspection after the first 50 operating hours. In this
way, you can detect and correct any irregularities or faults at an early stage.