Cleaning and maintenance
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Cleaning and maintenance
4.1
Safety instructions for maintenance
DANGER!
Electricity throughout entire unit!
Personnel danger due to electric shock or electric burns.
–
Before beginning work, pull out the mains plug or dis-
connect all live lines.
–
Secure all of the disconnected connections against
accidental reactivation.
–
Check that the unit is disconnected from mains voltage.
–
All of the work and electrical connections must comply
with the national regulations of the country in which the
unit is being operated (e.g. the VDE regulations in
Germany) and must be undertaken by appropriately
trained specialists.
If work is to be performed on the units, they must be deenergized. That
means that all live cables must be switched off.
Switching off the unit alone is insufficient, as certain points may remain ener-
gized. Therefore, switch off fuses before performing any work and – if possi-
ble – remove them.
Accidental reactivation can result in serious accidents. Immediately after
deenergizing, secure all switches or fuses used for deenergizing against be-
ing switched on again.
–
Lock the fuse box with a padlock.
In case of circuit breakers which cannot be unscrewed, a strip of adhesive
tape may be applied over the actuation lever with the wording 'Do not switch,
danger!' (1 + 2).
A prohibition sign with the text:
'Work in progress!'
'Place: ..............................'
'Sign may only be removed by: ............'
must always be securely mounted immediately.
DANGER!
Electricity is present throughout the entire unit!
Personnel danger due to electric shock or electric burns.
–
Prohibition signs must not be fixed to live parts nor
touch these.
NOTE:
No service or maintenance work should be undertaken dur-
ing the treatment.
