TAM 00621
17
DSD 45-100
05/2007
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 and has cooled off. Any connections, such as screw
connections, that are loosened while working on the motor 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 relevant chapters of these Commissioning and Maintenance Instructions.
When carrying out maintenance work, observe the same safety instructions that apply
to commissioning of the motor (see Section 4.1)
Attention: If the optional holding brake is fitted, it must not be used to secure anything
while working on the motor (e.g. for retaining loads)!
5.1
Inspection
Depending on how dirty the site is, cleaning will have to be carried out regularly to ensure an
adequate level of heat dissipation on a continual basis.
If a brake has been installed as an option, certain wear limits apply (e.g., max. perm. operating air
gap, limited number of emergency braking operations). The brake’s current wear status should be
checked regularly. As soon as the permissible wear limits are reached, the brake must be
replaced (see
Section 5.2
)
If a shaft sealing ring is installed as an option, you will need to check it regularly to ensure that it is
functioning correctly (check for leaks).
5.2
Maintenance
The service life of the bearings and sealing elements can vary greatly depending on the operating
conditions, (e.g., operating mode, temperature, speed and load).
Assuming that operation is trouble-free, we generally recommend the following maintenance
procedures:
• Replacement of the bearings after 20,000 operating hours (the bearings are designed for a
calculated service life of 20,000 running hours)
•
Replacement of the shaft sealing ring (if present and no leaks have been identified in the
course of previous inspections) after approximately 5000 operating hours.
If a brake is installed as an option, it must be replaced as soon as the wear limits are reached.
Maintenance work must be carried out by Baumüller or a specialist company that is commissioned
by Baumüller.
6 Disposal
The motor must be disposed off in accordance with the national and local regulations within the
framework of the normal recycling process.
The encoder electronics (if a SinCos encoder has been installed as an option) must be disposed
of in the proper manner as electronic waste.
