Prepare Servicing Work; Anti-Condensation Heating; Changing The Bearings - Siemens SIMOTICS HT Series Operating Instructions & Installation Instructions

Maintenance
9.2 Corrective Maintenance
See also
Service and Support (Page 117)
If the motor has to be transported, please observe the information and instructions in the
chapter "Transport (Page 32)".
9.2.1

Prepare servicing work

● The drawings and parts lists do not contain any detailed information about the type and
● Document the type, dimensions and arrangement of the parts so that you will be able to
● Use suitable tools to disassemble the machine.
● Take measures to prevent parts from dropping down before you dismantle them, e.g. by
● The centerings in the shaft extensions have reset threads. Use lifting gear which is suitable
See also
Service and Support (Page 117)
9.2.2

Anti-condensation heating

The anti-condensation heater is mounted directly on the winding. The anti-condensation heater
cannot be removed without causing damage to the winding. A new anti-condensation heater
may only be installed by Siemens Service Center (Page 117) specialists.
9.2.3

Changing the bearings

We recommend that the roller bearings are replaced after approx. 60,000 operating hours,
however, at the latest after 10 years.
NOTICE
Rotor removal or bearing change
Improper handling can lead to irreparable damage to the motor.
If it is necessary to remove the rotor or change the bearings, then under all circumstances
please contact the Service Center (Page 117).
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dimensions of fixing elements and components. For this reason, you should establish this
information when dismantling them and make a note of it for the purpose of reassembly.
reassemble the machine to its original state.
replacing fastening elements with extra-long screws, threaded bolts or similar. This ensures
that the part is supported after it is pulled off.
for the rotor weight and direction of loading.
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018