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(* ) You can perform these checks while the motor is at standstill or, if
• Further checks may be required if so specified in operating instructions of
components or in accordance with the plant-specific conditions.
• If you find any deviations during the inspection, you must rectify them
immediately. They may otherwise damage the motor.
7.1.4
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 7-1 Checks that have to be performed during the general inspection
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
128
required, while running.
required, while running.
When the
At
motor is
standstill
running
X
X
X
X
X
X
X
X
X
X
X
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