Bosch Worcester GREENSTAR 12i System Instruction Manual page 49

22.1
A
A
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 12i System/24i System
8 716 107 375a (02/05)
22.2
24.1
REPLACEMENT OF PARTS
22. Pump head
Ensure the boiler is fully drained (see
draining the appliance).
Disconnect the electrical connection from
the bottom of the pump.
22.1 Remove the four Allen bolts (A) securing the
pump at each corner.
22.2 Gently pull the pump towards you and
remove.
To refit, follow the above in reverse.
23. Pressure gauge
Ensure the appliance has been fully drained
(see draining the appliance).
Withdraw the spring clip from the pressure
sensing head housing.
Undo the nut on the rear of the pressure
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 capillary when
fitting a replacement gauge.
24. Drain tap
Ensure the appliance has been fully drained
(see draining the appliance).
24.1 Rotate the drain tap fully anticlockwise.
24.2 Withdraw the drain tap from its housing
To refit, follow the above in reverse. Ensure
any seals that have been disturbed are
renewed.
24.2
REPLACEMENT OF PARTS
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