10
Maintenance/troubleshooting
HAZARD
Hazard of explosion of an ignition-capable gas/air atmosphere!
›
In maintenance work and troubleshooting, the following order must be complied with!
1. There may not be any explosion-capable atmosphere.
2. Switch the fan off.
3. Open or tip the fan.
WARNING
Risk from electrical voltage!
›
Troubleshooting and maintenance only by a trained electrician or trained and instructed qualified per
-
sonnel!
›
Obey industrial protection directives in troubleshooting.
›
Pay attention to the 5 rules of electrical engineering:
–
clear (all-pole separation of an electrical system from live parts),
–
secure against switching on again
–
establish freedom from voltage,
–
earth and short-circuit,
–
cover or fence off neighbouring live parts..
10.1 Maintenance intervals
"
Carry out maintenance at least twice a year. We recommend more frequent maintenance in higher degrees of con
-
tamination or wear.
10.2 Cleaning
NOTE
Regular cleaning of the EX fans prevents imbalance!
WARNING
Risk from electrical voltage!
›
Cleaning the inside of the EX fan only by a trained electrician or trained and instructed qualified per
-
sonnel!
›
Only clean the inside of the EX fan dry.
›
Pay attention to the 5 rules of electrical engineering:
–
clear (all-pole separation of an electrical system from live parts),
–
secure against switching on again
–
establish freedom from voltage,
–
earth and short-circuit,
–
cover or fence off neighbouring live parts.
Maintenance/troubleshooting
64
