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Cleaning and maintenance
5
Cleaning and maintenance
28
5.1
Safety information for cleaning and
maintenance
DANGER!
Electricity throughout entire device
Personnel danger due to electric shock or electric burns.
–
Before beginning work disconnect all of the power con-
nections from main voltage.
–
Secure all of the disconnected connections against
accidental reactivation.
–
Check that the device is disconnected from main volt-
age.
–
All of the work and electrical connections must comply
with the national regulations of the country in which the
device is being operated (e.g. the VDE regulations in
Germany) and must be performed by appropriately
trained specialists.
If work is to be performed on the devices, they must be de-energized. That
means that all live cables must be switched off.
Switching off the device alone is insufficient, as certain points may remain
energized. Switch off fuses or breakers before performing any work and – if
possible – remove them.
Accidental reactivation can result in serious accidents. Immediately after de-
energizing, secure all switches or fuses used for de-energizing against being
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!'.
A warning sign with the text:
'Work in progress!'
'Place: ..............................'
'Sign may only be removed by: ............'
must be prominently and securely mounted prior to beginning any service.
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