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8.1.1
Safety note for ventilation
8.1.1.1
Forced ventilation (optional): Cooling method IC 416 in accordance with
EN / IEC 60034-6
Explosion hazard if the temperature class is exceeded
If a force-ventilated machine is operated without a separately driven fan, 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.
• Install an interlock circuit that prevents the machine from being switched on if the separately
driven fan is not switched on/is not operational.
• Do not commission the machine without a separately driven fan.
• Always use PTC thermistor monitoring when operating force-ventilated machines with a
converter. Trip units according to Directive 2014/34/EU ("Explosion Protection Directive") or
according to country regulations are always necessary when using PTC thermistor
monitoring.
Risk of injury when touching the fan
There is a risk of injury at machines equipped with a fan cover (e.g. on machines in the textile
industry), as the fan is not completely touch protected.
• Do not touch the rotating fan.
• Do not put your fingers into the larger air discharge openings.
• Prevent manual intervention by using suitable measures, e.g. appropriate housings or a
8.1.2
Switching on with the anti-condensation heating active
Excessively high machine temperature when the anti-condensation heating is switched on
If the anti-condensation heating is operated while the machine is running, this can increase the
temperatures inside the machine. Material damage can result.
• Switch off the anti-condensation heating before switching on the machine.
• Only operate anti-condensation heating when the machine is switched off.
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 11/2023, A5E52779956A
CAUTION
protective grating.
8.1 Safety instructions for operation
Operation
105
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