Synchronous motors (PMSM) – Manual with installation instructions
32
B 5000 en-2621
5 Service and maintenance
5.1 Service and maintenance intervals
The service and maintenance intervals highly depend on the ambient and operating conditions. They
must therefore be individually adapted for the driven machine during project planning.
Service and maintenance
intervals
Service and maintenance work
Information
see Section
Every 100 operating hours,
at least weekly
• Check for running noises
• Visual inspection for soiling, clean the drive surface from dust
deposits and other contaminants.
• For motor options with closed condensation outlets
(option: KB), drain off condensation.
At least every six months
• Visual inspection
every 10000 operating
hours,
at least every 2 years
• Replace radial shaft seals
• Check roller bearings, replace if necessary
• Check electrical connections, cables and wires for strength
and any damage. Replace damaged cables, if necessary.
• Checking the function of the insulation system
At least every 5 years,
can be considerably more
often under special
ambient conditions
• General overhaul
Table 14: Service and maintenance intervals
5.2 Bearing replacement periods
The following table specifies the bearing replacement period in operating hours [h] depending on the
motor speed and the coolant temperature. It applies for IEC motors under normal operating conditions
and with horizontal motor installation.
In case of direct mounting of the gear units or special operating conditions, for example vertical motor
installation, high vibration and impact loads, frequent reversing operation, etc., the operating hours
stated in the table can be significantly reduced.
25°C
40°C
60°C
to 1,800 min-1
approx. 40,000 h
approx. 20,000 h
approx. 8,000 h
to 3,600 rpm
approx. 20,000 h
approx. 10,000 h
approx. 4,000 h
Table 15: Bearing replacement periods
