TAM00721
17
DSD-028 / DSD-036 / DSD2-028 / DSD2-036
04/2013
Three-phase-synchronous motor
English
5
Inspection and maintenance
Working on the electric motor:
Work must not be carried out on the electric motor until the motor has come to a standstill,
is electrically isolated, de-pressurized and has cooled down. All connections, such as
screws on the motor that were loosened must be tightened again after the inspection and
maintenance work.
When carrying out work on the motor, please observe the technical instructions and notes in
the respective sections in these Commissioning and Maintenance Instructions.
When carrying out maintenance work, observe all safety instructions which also apply to the
commissioning of the motor (see Section 4.1).
Attention!:
If the optional holding brake is fitted, this brake must not perform a safety function during
work on the motor (e. g., retaining loads)!
5.1
Inspection
Depending on the severity of soiling on site, cleaning will have to be carried out regularly to guarantee
the continuous adequate dissipation of heat. The flow rate and the pressure ratio of the cooling system
must be checked.
If an optional brake is fitted, wear limits are specified (e. g., maximum permissible operating air gap,
maximum number of emergency braking operations). The actual degree of wear on the brake must be
checked at regular intervals. When the permissible wear limits have been reached, the brake must be
replaced (see Section 5.2).
If an optional shaft sealing ring is used, it must be checked at regular intervals to ensure it is functioning
correctly (leakage).
5.2
Maintenance
The service life of the bearings and sealing elements can differ greatly depending on the operating
conditions, (e. g. operating mode, temperature, speed and load).
In the case of trouble-free operation, we generally recommend the following maintenance procedures:
• Replacement of the bearings after 20.000 running hours (the bearings are designed for a calculated
service life of 20.000 running hours)
• Replacement of the shaft-sealing ring after approximately 5.000 running hours, if present and if no
leaks have been detected during previous inspections
If an optional brake is fitted, it is essential that it is replaced when its wear limits are reached.
The maintenance work is to be undertaken by Baumüller or a specialist organization authorized by
Baumüller.
Caution!
The specifications of the technical instructions TABG 30026 must be followed during
maintenance and servicing on motors which are used for safety-oriented applications.
6
Disposal
The motor must be disposed of in accordance with the relevant national and local regulations within the
framework of the normal recycling process.
The encoder electronics (if provided) must be disposed of in the proper manner as electronic scrap.
