11
Troubleshooting/maintenance/repair
11.1
Safety information
Danger from electrical voltage!
»
Troubleshooting and maintenance may only be carried out by a trained electrician, or trained and instructed specialist personnel!
»
Observe the work protection regulations when troubleshooting!
»
Observe the 5 rules of electrical safety (see section 2.5)!
»
Switch the fan off.
11.2
Switching the device off for maintenance work
WARNING
Danger from electrical voltage!
»
Observe the 5 rules of electrical safety (see section 2.5)!
Switch off the device via the control input.
Do not switch the motor (e.g. in cycle operation) on or off via the mains.
Disconnect the device from the power supply.
When disconnecting, make sure to remove the earth wire last!
11.3
Preconditions
•
The power supply has been switched off (all-pole circuit breaker).
•
The rotor is at a standstill.
Troubleshooting/maintenance/repair
49