beautypg.com

14 replacement of parts, 18 r.h. and l.h. hydroblock, 19 filter – Glow-worm Betacom C User Manual

Page 63: 20 flow sensor, 21 three way valve motor

background image

63

14 Replacement of parts

14590

Diagram 14.19

Diagram 14.20

14.18 R.H. and L.H. Hydroblock

For access, refer to section 14.1.

Drain the boiler circuit, refer to section 14.2.

Refer to diagram 14.12.

Remove the secondary heat exchanger, see section 14.12.

Remove the pump assembly, see section 14.9. and 14.10.

Remove the section of the hydroblock from the pump by

releasing the clip.

Release the heat exchanger outlet pipe nut and rotate the

pipe for easy removal of the left section of the hydroblock.

Disconnect the three way valve motor, electrical connection

and remove the motor by releasing the clip, see section

14.21.

Release the nut connecting the CH outlet connection to the

hydroblock.

Disconnect the DHW sensor, see section 14.3.

Remove the screw securing the left part of the hydroblock to

the combination boiler.

Fit the replacement hydroblock parts in reverse order to

removal ensuring all seals are correctly located and replaced

if necessary.

Open the isolating valves on the flow and return connections,

refill, vent and pressurise boiler ensuring all joints are sound.

14.19 Filter

For access, refer to section 14.1.

Drain the boiler circuit, refer to section 14.2.

Refer to section 12.5. to remove.

Remove the filter in the inlet to the hydroblock.

Clean or fit a replacement filter.

Fit the components in reverse order of removal, ensuring all

seals are correctly located and replaced if damaged.

Open the isolating valves on the flow and return connections,

refill, vent and pressurise the boiler ensuring all joints are

sound.

14.20 Flow sensor

For access, refer to section 14.1.

Refer to diagram 14.19.

Remove the flow sensor using a pair of pliers.

Fit a replacement sensor in reverse order to removal.

14.21 Three way valve motor

For access, refer to section 14.1.

Refer to diagram 14.20.

Ensure that the electric supply to the boiler is switched OFF.

Remove the electrical connection to the three way valve

motor.

Remove the clips connecting the valve to L.H. hydroblock.

Fit the replacement valve in reverse order ensuring the valve

is fitted properly.

UNCLIP

TO REMOVE

THREE WAY

VALVE MOTOR

14562

ELECTRICAL

CONNECTION

ELECTRICAL

CONNECTION

FLOW

SENSOR

CLIP