Bosch Worcester GREENSTAR CDi Series Instruction Manual page 42

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.
~ S l a c k e n
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).
~ A d j u s t
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;
~ O R C E S T E R
6 720 613 700a (2006/11)
Bosch Group