79
1.
2.
3.
A
B
Fig. 61
1.
Remove the top casing panel.
2.
Loosen all 4 nuts
A
and swivel bolts with nuts to
the side.
Note
The nuts do not have to be removed.
3.
Lift off maintenance cover
B
.
Note
The maintenance cover can be set down on the
top casing panel.
4.
Clean the flue gas collector chamber.
Checking the heat exchanger cleaning
Removing the casing
Danger
Touching live components can result in life
threatening injuries. After switching off the
ON/OFF switch on the control unit, there are still
live components inside the control unit enclo-
sure.
■
Isolate the system from the power supply, e.g.
by removing the separate fuse or by means of
a mains isolator, and check that it is no longer
live.
■
Safeguard the system against reconnection.
Danger
Risk of crushing or entanglement due to rotating
and moving parts.
Do not reach in through the maintenance cov-
ers.
Commissioning, inspection, maintenance
Cleaning the flue gas collector chamber
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