General Inspection; Rolling-Contact Bearing Inspection - Siemens 1PH818 Operating Instructions Manual

Maintenance
9.1 Inspection and maintenance
9.1.1.2

General inspection

Items for inspection
Perform the following checks after approx. 16,000 operating hours or 2 years, whichever
comes first:
● While the motor is running, check that:
● Once the machine has been shut down, check that:
9.1.1.3

Rolling-contact bearing inspection

Inspections in the event of faults
Perform an inspection immediately in the event of faults or exceptional operating conditions
indicating an electrical or mechanical overload, e.g., overload, short circuit.
Inspecting rolling-contact bearings
When inspecting rolling-contact bearings, it is generally not necessary to dismantle the
machines. The motor only has to be dismantled if the bearings are to be replaced.
Note
Observe the regreasing intervals for the rolling-contact bearings
The regreasing intervals for rolling-contact bearings are different from the inspection
intervals. Failure to regrease the rolling-contact bearings at the specified intervals can result
in them sustaining damage. Comply with the regreasing intervals for roller bearings, the
regreasing intervals are specified on the lubricant plate.
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– The stated electrical characteristics are being observed
– The smooth running characteristics and machine running noise have not deteriorated
– The motor foundation has no indentations or cracks
– The machine is aligned within the permissible tolerance ranges
– All the fixing bolts/screws for the mechanical and electrical connections have been
securely tightened
– The winding insulation resistances are sufficiently high
– Any bearing insulation has been fitted as shown on plates and labeling.
– Cables and insulating parts and components are in good condition and there is no
evidence of discoloring
CAUTION
If you detect any defects or malfunctions during the inspection, you must rectify them
immediately. They may otherwise cause damage to the machine.
Siemens AG Operating Instructions V1.0 1PH8
A5E02605207A AA