29
If possible the motor is to be connected without load. If the motor is running smoothly and without any
abnormal noises, the load of the driven machine is to be applied onto the motor. When the motor is
started up it is recommended to monitor the current consumption if the motor is loaded with its driven
machine so that any possible overloads and asymmetries occurring in the mains can be recognised
immediately. The starter must always be in the starting position during starting.
8.
MAINTENANCE
Before any maintenance work:
· Stop the engine in accordance with the regulations and
disconnect all poles of the mains.
· Wait until the motor stops!
· Make sure to disable the restart!
Use only original spare parts tested and approved by the
manufacturer.
You are once again referred to the Safety Regulations, in particular to isolation, to securing against
reconnection, to checking whether all components connected to a voltage source are in dead state. If
it is necessary to disconnect the motor from the mains for maintenance work particular care must be
taken to ensure that any possibly existing auxiliary circuits (e.g. anti-condensation heaters, forced
ventilators, brakes) are also disconnected from the mains.
The motors are designed for the easy and simple maintenance. Properly installed and electrically /
thermally protected they can work for years.
Careful and regular maintenance, inspections and revisions are necessary to detect and clear faults in
time, before consequential damages will happen. As individual operating conditions can not be
defined for all applications the listed terms represent a general advice for undisturbed operation.
Individual local conditions (degree of pollution, load, etc.) must be taken into account when adjusting
these terms.
What to do?
Time period
Terms
First inspection
After about 500 operating hours
½ year at the latest
Control of air circulation and
surface of motor
Depending on local environmental
pollution
Relubrication (as option)
See name plate or relubrication sign
Main inspection
After about 7,000 operating hours
Once a year
Remove condensate water
Depending on the local
environmental conditions
Inspektions
Initial inspection
According to the requirements an initial inspection of the motor must be organised after approximately
500 hours of operation, but not later than half a year after start of operation :
The following examinations will
be done at standstill of the motor
The following examinations will be done when the motor is
running:
- Check of the foundations. There
must be no cracks or other
damages like depressions.
- Check of the electric characteristics.
- Check of the bearing temperatures. It is examined if the
permissible bearing temperatures will be exceeded during
operation of the motor.
- Check of the running noises. When the motor is running, it is
checked if the quiet running has changed for the worse.
