Bosch Worcester GREENSTAR CDi Series Instruction Manual page 50

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REPLACEMENT OF PARTS
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REPLACEMENT OF PARTS
21. Pump head
~
Ensure the appliance has been fully
drained.
21.1 ~ Disconnect the electrical connections
from the pump following steps 1 to 4.
21.2
~
Remove the four Allen bolts (A) secur-
ing the pump at each corner.
21.3
~
Gently pull the pump towards you and
remove.
~
To refit, follow the above in reverse.
22. Pressure gauge
~
Ensure the appliance has been fully
drained.
~
Withdraw the spring clip from the pres-
sure sensing head housing.
~
Undo the nut on the rear of the pres-
sure gauge.
~
Remove the pressure sensing head
and pressure gauge capillary from the
housing.
~
To refit, follow the above in reverse.
DO NOT omit the washer from the capil-
lary when fitting a replacement gauge.
23. Flow sensor, flow restrictor
housing and filter
~
Ensure the domestic hot water circuit
is fully drained.
~
Disconnect the electrical connection to
the turbine.
~
Remove the spring clip from the hous-
ing and move the brass pipe to one side.
23.1
~
Withdraw the flow sensor and filter
from the housing.
~
Using the cartridge tag, withdraw the
flow restrictor housing. If the regulator
housing has become stuck, a pair of long
nosed pliers may be used to grip the
housing.
~
To refit, follow the above in reverse.
Ensure any seals that have been dis-
turbed are renewed.
24. Flow regulator
~
Remove the flow restrictor housing
(See Removing the flow sensor, flow
regulator and filter).
24.1 ~ Using a small Allen key or similar, push
the flow restrictor cartridge out of its
housing.
~
To refit, follow the above in reverse.
Ensure any seals that have been dis-
turbed are renewed.
25. Drain tap
~
Ensure the appliance has been fully
drained.
25.1
~
Rotate the drain tap fully anticlockwise.
25.2
~
Withdraw the drain tap from its housing.
~
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;
~ O R C E S T E R
6 720 613 700a (2006/11)
Bosch Group