These machines have a warning sticker on the fan cover.
8.2 Switching on the machine
1. Operate the machine without a load and check that it is running smoothly.
2. If it runs perfectly, connect a load.
NOTICE
Thermal overload of motors connected directly to the line supply
In addition to the load torque, the ramp-up (accelerating) time is essentially inuenced by
the moment of inertia to be accelerated. While ramping up when connected to the line
supply, the inrush (starting) current is a multiple of the rated current. This can result in
thermal overload. This can damage the motor.
As a consequence, when ramping up, observe the following:
• Monitor the ramp-up time and number of consecutive starts.
• Comply with the limit values and/or ramp-up conditions specied in the catalog or the
order documentation.
3. Check the bearing temperature and the stator winding temperature if this is possible using
the available measuring equipment.
8.3 Deactivating
Commission any devices provided for protection against condensation after switching o the
machine.
8.4 Switch o the separately driven fan
Do not immediately switch o the separately-driven fan after switching o the machine. First
wait for the machine to cool down. This will prevent the accumulation of residual heat.
8.5 Switching on again after an EMERGENCY OFF
• After an EMERGENCY OFF, check the machine before recommissioning the driven machine.
• Eliminate all the causes that led to the EMERGENCY OFF
8.6 Stoppages
The stoppage is a shutdown for a period of time, during which the machine is stopped but
remains at the location of use.
Operation
8.6Stoppages
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A 91
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