Maintenance and cleaning
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9. Maintenance and cleaning
Diligent maintenance is the prime factor for assuring an error-free and efficient operation of the
unit. All the maintenance tasks contained in this chapter have to be performed according to the
maintenance intervals.
9.1. Safety
Working on the electrical equipment
DANGER
DANGER
Electrical danger!
Work on electrical installations may be carried out by trained and authorized electri-
cians only.
Switch off the unit before starting your work.
Disconnect the unit from mains by pulling the mains plug.
Secure the unit against being switched on again.
Verify that the unit is dead.
Carry out earthing and short circuiting.
Keep unauthorized persons away from the working area.
When working on electrical installations the following principles should be observed:
Works on the electrical installations may only be accomplished by qualified electrical
staff.
When connecting electrical equipment to mains regional regulations have to be ob-
served. Be aware of the connection diagram information!
The unit is powered by electricity. Electrical shock hazard exists, if the electrical instal-
lations are defective or the insulation fails during operation.
When switched-off the unit is not disconnected from mains. This is only the case when
the mains plug is pulled.
Any changes regarding the control elements of the unit can have an influence on the
save operation. All changes intended must be authorized by the manufacturer.
After the implementation of a change the correct operation of the safeguards must be
verified.
No unauthorized changes on the unit are allowed. All intended changes must be au-
thorized by the manufacturer.
