9.1.4 General inspection
● Check that the installation conditions are observed. Perform the following checks after
approx. 16 000 operating hours or at the latest after two years:
Checking When the
motor is
running
At stand‐
still
The electrical parameters are maintained X
The permissible bearing temperatures are not exceeded X
The smooth running characteristics and machine running noise have not
deteriorated
X
The foundation has no cracks or indentations. (*) X X
The machine is aligned within the permissible tolerance ranges. X
All the fixing bolts/screws for the mechanical and electrical connections
have been securely tightened
X
All the potential connections, grounding connections and shield supports
are correctly seated and properly bonded
X
The winding insulation resistances are sufficiently high X
Any bearing insulation is fitted as shown on the plates and labels X
The CABLES and insulating parts and components are in good condition
and there is no evidence of discoloring
X
Condensation can freely flow away. X
(*) This check can be made at standstill or when running.
● If you detect any deviations during the inspection, you must rectify them immediately. They
may otherwise cause damage to the machine.
Checking the cooling system
● With the machine stopped, check the condition of the cooling system:
– The cooling system is in good condition.
– The pressure drop between entry and exit has not increased appreciably.
9.1.5 Servicing the air-to-water heat exchanger
At every inspection, check to see whether there is leakage water in the top enclosure.
1. Remove the appropriate stopper in the top enclosure.
2. If water flows through the opening, then determine the cause and deal with it. This may be
condensate.
3. Replace the stopper in the top enclosure.
Maintenance
9.1 Inspection and maintenance
SIMOTICS HV M 1RN76308PR900CG0-Z
90 Operating Instructions 07/2018
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