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9.1.5
General inspection
Check that the installation conditions are observed. We recommend that the following
checks are performed after approx. 16 000 operating hours or at the latest after two years:
Table 9- 1
Checking
The electrical parameters are maintained
The permissible bearing temperatures are not exceeded
The smooth running characteristics and machine running noise have not
deteriorated
The motor foundation has no cracks and indentations (*)
The machine is aligned within the permissible tolerance ranges
All the fixing bolts/screws for the mechanical and electrical connections
have been securely tightened
All the potential connections, grounding connections and shield supports
are correctly seated and properly bonded
The winding insulation resistances are sufficiently high
Any bearing insulation is fitted as shown on the plates and labels
The CABLES and insulating parts and components are in good condition
and there is no evidence of discoloring
(*) You can perform these checks while the motor is at standstill or, if required, while running.
NOTICE
Machine damage
When carrying out the inspection, if you detect any impermissible deviations from the
normal state, you must rectify them immediately. They may otherwise cause damage to the
machine.
9.1.6
Assessing the rolling bearings
To assess the rolling bearings, it is generally not necessary to dismantle the machines. The
motor only has to be dismantled if the bearings are to be replaced.
The state of a rolling bearing can be assessed by analyzing the bearing vibration. The
measured values provide an indication and can be assessed by specialists. In this case,
please contact the Service Center.
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Operating Instructions, 03/2018, A5E41926185A
Checks that have to be performed during the general inspection
Maintenance
9.1 Inspection and maintenance
When the
At stand-
motor is
still
running
X
X
X
X
X
X
X
X
X
X
X
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