INSPECTION AND SERVICE
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INSPECTION
AND
SERVICE
To
Clean the Burner
1.
~
Remove cover panel (A) by removing the
screws
(B).
~
Check
that the boiler is completely isolat-
ed from the gas supply.
2.
~
Remove the clips (C) and
unscrew
the
two
bolts (D).
~
Unscrew
and remove the
two
hexagon
screws
(E) securing the fan.
~Slacken
fully the rear securing bolt (F).
~
Remove the burner cover plate (G).
3.
~
Remove the burner (H) and clean compo-
nents.
Do
not
use
a
wire
brush.
To
Check the Diaphragm
in
Burner Cover
4.
~
Carefully
withdraw
diaphragm
(J)
from fan
intake tube and
check
for soiling and splits.
~
Carefully refit diaphragm
(J)
the
correct
way round into the fan intake tube.
Note: The flaps
of
the diaphragm (J) must
open upwards.
~
Re-assemble burner
in
reverse order using
a new
seal (K).
~Adjust
gas/air ratio. Refer
to
section
"Setting the gas/air ratio".
To
Clean the Condensate Trap
5.1
~
Pull condensate pipe out
of
the adapter.
5.2~
Remove trap from boiler.
~
Clean trap and
check
that the connection
to
the heat exchanger
is
clear.
~
Fill the condensate trap with approxi-
mately 1/4 litre
of
water and refit
in
reverse
order .
...
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INSTALLATION & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR
25CDI/30CDI/37CDI/42
co;
~ORCESTER
6 720
613
700a
(2006/11)
Bosch
Group
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