Glow-worm Betacom C - Manual (Page 58)

58
14 Replacement of parts
14.10 Pump body
For access, refer to section 14.1.
Remove the motor as described in section 14.9.
Remove the low water pressure sensor refer to section 14.11.
Remove the secondary heat exchanger as described in
section 14.12.
Refer to diagram 14.7.
Remove the expansion vessel pipe by removing the clip on
the pump body. (clip at the rear, see diagram 14.8.
Remove the pressure gauge connection and electrical
connection form the R.H.hydroblock.
Disconnect the union nuts (pressure safety relief valve and
pump outlet).
Refer to diagram 14.9.
Remove the fixing screws from the pump and R.H.hydroblock
at the bottom of the boiler.
Remove the pump assembly.
Refer to diagram 14.10.
Remove the pump body, automatic air vent and brass union
connector from the R.H. hydraulic assembly by releasing the
clips. Fit these to the replacement pump body.
Fit the replacement pump body and associated parts in
reverse order ensuring that all sealing washers are sound and
fitted correctly and the polarity of the electrical connections
are correct.
Open the isolating valves on the low and return connections,
refill, vent and re-pressurise the system ensuring all joints are
sound.
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14562
Diagram 14.8
Diagram 14.9
Diagram 14.10
Diagram 14.7
ELECTRICAL
CONNECTION
PUMP
BODY
PUMP
BODY
PUMP
BODY
EXPANSION
VESSEL
PIPE
R.H. HYDRAULIC
ASSEMBLY
CLIP
CLIP
CLIP
CLIP
CLIP
SECURING
SCREWS
SECURING
SCREW
SECURING
SCREW
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14581
BRASS UNION
CONNECTOR
AUTOMATIC
AIR VENT
PRESSURE
GAUGE
CONNECTION
UNION
NUT
UNION
NUT