2.
Fit rotary brush
D
(accessories) to
a rechargeable power screwdriver
or drill and clean the heat exchan-
ger with the rotary brush (at low
speeds). Remove all deposits,
including the sides of the indirect
coils.
!
Please note
To prevent damage,
cover the control unit.
Danger
Cleaning work may lead to
eye injuries.
Wear protective goggles.
3.
Remove dirt from the heat exchan-
ger gaps with a vacuum cleaner
with angled nozzle
E
(acces-
sories).
4.
Thoroughly flush the combustion
chamber with water. Ensure that
the drain hose continues to termi-
nate in the vessel (see points 1).
Checking the condensate drain and cleaning the siphon
1.
Check at siphon
A
, that the con-
densate can freely drain off.
2.
Remove the retaining clip and the
siphon.
3.
Clean the siphon.
4.
Fill siphon
A
with water and fit it to
the boiler. Position the retaining
clip.
Checking the neutralising system (accessories)
Check the pH value of the condensate with a pH test strip. Replace the granu-
late if the pH value < 6.5.
Further details regarding the individual steps
(cont.)
23
Initial start-up, inspection, maintenance
5692
536
GB
Summary of Contents for Vitoplus 300
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