Operation   
8.1 Safety instructions for operation 
  1MB..5/6 shaft height 71 ... 355 
96  Operating Instructions, 07/2020, A5E41926185A 
 
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 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. 
•  Make sure that the anti-condensation heating is switched off before the machine is 
switched on. 
•  Only operate anti-condensation heating when the machine is switched off. 
 
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 on the anti-condensation heating after the motor has been switched-off. 
Comply with the data stamped on the plate of the anti-condensation heating, if