TAM 00609 15
DA 100 – 280 03 / 2015
Three phase asynchronous motor air cooled Englisch
4 Commissioning, operation
Safety instructions 4.1
Working on the electric motor:
Work must not be carried out on the electric motor until the motor has come to a standstill and
is de-energized. All connections, such as screw connections, that were loosened must be
tightened again prior to commissioning.
When carrying out work on the motor, please observe the technical instructions and notes in
the respective chapters in these Commissioning and Manitenance Instructions.
CAUTION!
An optional integrated holding brake may not take up a safety position during the
works at the motor (such as holding loads).
Danger to life due to electrical shock:
Make sure that the motor is disconnected and de-energized.
Never disconnect the motor connections while in operation.
Only connect measuring device when motor is disconnected from power supply and de-
energized.
Only commence work on the motor connections after you are sure that the motor is de-
energized and that there is no electric potential.
During operation, electric potential can be found at the motor terminals/contacts and at the
motor windings. Never touch these modules/elements while the motor is in operation.
Mounting and demounting the safety devices:
The electric motor may not be mounted without mounting the safety devices at first.
In order to mount and demount components and systems intended to monitor the
safety motor operation the motor at first must be put out of operation.
Make sure that the electric motor has come to a standstill and is secured against accidental
restarting before you touch it.
Touch the output shaft, only if it is free from tension and has come to a standstill.
Otherwise, danger due to a rotating rotor.
Danger of burns! Never touch the motor housing when motor is running at rated load. Sur-
face temperatures can rise up to 70°C.
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