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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 9-2
Checking
The electrical parameters are maintained
The permissible bearing temperatures are not exceeded (Page 109)
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.
See also
Set values for monitoring the winding temperature (Page 110)
Checking the cooling system
● With the machine stopped, check the condition of the cooling system:
9.1.6
Servicing and maintaining the anti-condensation heating
The anti-condensation heating is maintenance-free. If it is defective, contact the
Service Center (Page 177).
SIMOTICS FD 1MH1
Operating Instructions 08/2017
Checks that have to be performed during the general inspection
– The cooling system is in good condition.
– The pressure drop between entry and exit has not increased appreciably.
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
137
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