P ersonnel
• The maintenance work described herein can be performed by the
operator unless otherwise indicated.
• Some maintenance tasks should only be executed by especially
trained, qualified personnel, or exclusively by the manufacturer;
specific reference will be made in each case in the description of
the respective maintenance task.
• Only professional electricians should perform work on the electri-
cal equipment.
Electrical shock hazard
Incorrect installation can result in serious injuries, death or
damage. Only professional electricians should work on electrical
systems.
DANGER
Danger if restarted without authorization
When correcting faults, there is danger of the energy supply
being switched on without authorization. This poses a lifethreat-
ening hazard for persons in the danger zone.
Therefore:
• Prior to starting work, switch off the system and safeguard it
from being lockout.
DANGER
8 Maintenance
Electrical equipment
Safeguarding against restart
70
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