WARNING
Explosion hazard
If
the
anti-condensation heating is switched on during operation, the temperature class or the
maximum surface temperature of the machine can be exceeded.
In an explosive atmosphere, there is a risk of an explosion. This can result in death, serious
injury or material damage.
Only switch the anti-condensation heating on after the motor has been switched off.
8.5 Switching on the machine
1. If at all possible, run the machine without 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 influenced 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 specified in the catalog or the
order documentation.
3. If this is possible using the available measuring equipment, check the bearing and stator
winding temperatures.
8.6 Switching off the external fan
If
the controller does not switch off the external fan automatically, switch it off when the machine
is stopped.
8.7 Switching on again after an emergency switching-off
● Check the machine before recommissioning the driven machine after an Emergency Off.
● Eliminate all the causes that have led to the emergency off
Operation
8.7 Switching on again after an emergency switching-off
LOHER CHEMSTAR 1PS2
78 Operating Instructions 08/2016
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