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Maintenance
9.6 Inspection and maintenance
Check
The smooth running characteristics and machine running noise have not de‐
teriorated.
The foundation has no cracks or indentations. (*)
(*) You can perform these checks while the motor is running or at a standstill.
Additional tests may also be required according to the system-specific conditions.
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.
9.6.4
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 9-2
Checking
The electrical parameters are maintained
The permissible bearing temperatures are not exceeded
The smooth running characteristics and machine running noise have not de‐
teriorated
The foundation has no cracks or 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.
94
Checks that have to be performed during the general inspection
When the
motor is
running
X
X
When the
motor is
running
X
X
X
X
Operating Instructions, 07/2020, A5E46712792A
At stand‐
still
X
At stand‐
still
X
X
X
X
X
X
X
1FU9
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