REPLACEMENT
OF
PARTS
I
I
I
I
'
'
\
~
,,
'•,
28.2
REPLACEMENT
OF
PARTS
28. Plastic protection device
~
Ensure the system is fully drained.
~
Disconnect all pipes
connected
to
the
pump
housing.
~
Remove the electrical connection to
the pump.
~
Withdraw
the metal clip to the right
of
the
pump
head
to
release the
pump
housing.
~
Slide the device
to
the left and then
withdraw
it from the appliance.
28.1
~
Remove the spring clip from the pres-
sure relief valve housing.
28.2
~
Withdraw
the pressure relief valve (A).
~
To
refit, follow the above
in
reverse.
Ensure any
seals that have been dis-
turbed are renewed.
29.
DHW
Heat
exchanger
29.1
29.2
~
Remove the Hydraulic block from the
boiler (See Removing the Hydraulic
Block).
~
Undo the
two
screws
(B) securing the
plastic housings
to
the heat exchanger.
~
Remove the heat exchanger.
~
To
refit, follow the above
in
reverse.
Ensure any
seals that have been dis-
turbed are renewed.
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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