80
1.
2.
3.
A
B
Fig. 62
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. Check the heat exchanger cleaning
■
Switch on the system. Do not start the boiler.
■
Switch the heat exchanger cleaning by means of
an actuator test.
■
Isolate the system from the power supply and
check that it is no longer live.
Safeguard the system against reconnection.
Note
The heat exchanger cleaning can be switched via
"Actuator test"
in the
"Service"
menu. See
page 113.
Commissioning, inspection, maintenance
Checking the heat exchanger cleaning
(cont.)
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