Glow-worm sxi and Gas Valve - Manual (Page 46)

46 0020015347-03
Diagram 14.20
RETAINING
LATCHES
11505
CONTROLS
FASCIA
Diagram 14.19
SECURING
CLIP 1
SECURING
CLIP 2
14 Replacement of Parts
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW
12896
Undo the coupling at the base of the expansion vessel, see
diagram 14.8.
Remove the clip holding the expansion vessel coupling into the
top of the right hand hydroblock.
Move the coupling out of the way.
Remove pump head, refer to section 14.14.
NOTE: It is not necessary to disconnect the electrical lead but
put pump head in a convenient place where it will not strain the
lead.
Remove the bypass tube, refer to section 14.21.
Remove the electrical connection to the low water pressure
sensor, refer to section 14.20.
Remove the water connection clip 2 below the hydroblock, see
diagram 14.19.
Remove the central heating filter, refer to section 12.7.
Remove the retaining clip to remove the drain point, refer to
section 14.24.
Undo two securing screws on underside of the right hand
hydroblock.
Remove screw in back plate.
Lift out the right hand hydroblock.
Remove the remaining components for refitting into the
replacement right hand hydroblock.
Refill, vent and pressurise the boiler.
Check for leaks.
14.29 Access to Switches and User Interface
For access, refer to section 14.1.
Release the front of the fascia by carefully prising up the two
retaining latches, see diagram 14.20.
Do not allow the front of the controls fascia to swing down and
be loosely held by the electrical connections to the mainsreset
switch, user interface and programmer. Either remove the
connections or support the fascia.
14.30 Mains Reset Switch
Refer to section 14.29 for access and diagram 14.21.
Remove the switch retaining screw.
Remove switch from housing.
Remove electrical leads.
14.31 Mains Reset Knob
Refer to section 14.29 for access.
Remove actuator by springing back retaining clips, see diagram
14.21.
Spring back knob retaining clips and push knob out from the
back.
14.32 Main PCB
Refer to section 14.1 for access and diagram 14.22.
Hinge down the control box.
Remove three TORX screws and unhook the rear panel.
Remove the electrical connections to the PCB.
Prise back the two PCB retaining clips and withdraw the PCB.
When refitting the rear panel ensure the leads are not trapped.