Instructions to enable adjustment and maintenance safely |
57
S Instructions to enable adjustment and maintenance safely
S.1 Protective measures and additional protective measures
Adjustment and maintenance must be done by skilled technicians – usually based on service contracts for some years
or long-term ESCO contracts.
The units are provided with guards to avoid unintended hazards and injury because of rotating parts in the unit. The po-
tential sources of harm are the fans with fast rotating impellers. Hazards from the impellers are obvious during opera-
tion, but when power is cut-off, the impellers are still potential hazards due to after-run for at least 20 seconds. Notice
that even cut-off the impellers are still potential hazards.
The fan guard’s are the inspection doors and the doors are provided with locks. Inside the doors are additional protec-
tion installed – guards that only can be removed by use of tools.
Other motor-driven parts are dampers with damper motors and rotary heat exchangers, but the movement is so slow
that guard measures are not necessary. Just keep your hands away from places with risk of injury.
Use particulate respirator when filters are replaced.
S.1.1 Necessary protection measures prior to start-up
Ensure that all protection measures are installed correct before start-up.
S.1.1.1 Design of protection measures
Inside the doors are additional protection installed – guards that only can be removed by use of tools.
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