Cleaning and maintenance
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5
Cleaning and maintenance
5.1
Safety instructions for mainte-
nance
DANGER!
Electricity throughout entire device!
Personnel danger due to electric shock or electric
burns.
– Before beginning work, pull out the mains plug or
disconnect all live lines.
– Secure all of the disconnected connections
against accidental reactivation.
– Check that the device is disconnected from mains
voltage.
– All of the work and electrical connections must
comply with the national regulations of the coun-
try in which the device is being operated (e.g. the
VDE regulations in Germany) and must be under-
taken by appropriately trained specialists.
If work is to be performed on the devices, they must be deenergized.
That means that all live cables must be switched off.
Switching off the device alone is insufficient, as certain points may re-
main energized. Therefore, switch off fuses before performing any
work and – if possible – remove them.
Accidental reactivation can result in serious accidents. Immediately
after deenergizing, secure all switches or fuses used for deenergizing
against being switched on again.
– Lock the fuse box with a padlock.
In case of circuit breakers which cannot be unscrewed, a strip of adhe-
sive tape may be applied over the actuation lever (1 + 2) with the
wording 'Do not switch, danger!'.
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 device!
Personnel danger due to electric shock or electric
burns.
– Prohibition signs must not be fixed to live parts
nor touch these.
