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6 Maintenance
6.1 Important notes on maintenance
Qualication of personnel
All maintenance work must be carried out only by well qualied and trained
personnel authorised by the owner. It is the owner’s responsibility to verify
proper qualication of the personnel.
General note
The instructions and details for maintenance work must be followed and
upheld.
Only the maintenance work described in this documentation may be car-
ried out.
Only use original Nordmann spare parts to replace faulty parts.
Safety
Some maintenance work requires removal of the unit covers. Please note
the following:
DANGER!
Danger of electric hazard!
You may get in touch with live parts when the unit is open. Touching live
parts may cause severe injury or even lethal violation.
Prevention: Before carrying out any maintenance work set the Nordmann
AT4 D out of operation as described in chapter 4.4 (switch off the unit,
disconnect it from the mains and stop the water supply) and secure the
unit against inadvertent power-up.
CAUTION!
The electronic components inside the steam generator are very sensitive
to electrostatic discharge.
Prevention: Before carrying out any maintenance work to the electrical or
electronic equipment of the steam generator, appropriate measures must
be taken to protect the respective components against damage caused
by electrostatic discharge (ESD protection).
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