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28.3. Preparing for maintenance
Removing the front casing
Screw
- First undo the central screw at the bottom of the front casing.
- Push in the two locking hooks at the bottom left and right and pull the casing
forwards.
- Lift the front casing upwards to release and remove it.
Isolating the system from the power supply
The mains terminals remain live even when
the ON/OFF switch has been switched OFF.
- Isolate the system from the power supply.
Closing the gas ball valve
Some components can be very hot. Let them cool down or wear
gloves.
Risk of burns
Seite 16
Gaskugelhahn, Durchgangsform
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