Glow-worm hxi and Gas Valve - Manual (Page 39)

39 0020008153-05
13 Replacement of Parts
13.1 Important Notes
When replacing a part on this appliance, use only spare parts
that you can be assured conform to the safety and performance
specification that we require. Do not use reconditioned or copy
parts that have not been clearly authorised by Glow-worm.
Replacement of parts must be carried out by a competent
person.
Before replacing any parts the boiler must be isolated from the
mains electric supply and the gas must be turned off at the
service cock on the boiler, see diagram 11.1.
Unless stated otherwise parts are replaced in the reverse order
to removal.
After replacing any parts always test for gas soundness and if
necessary carry out functional test of the controls.
For replacement of parts the casing panel the inner casing
panel and chassis front panel of the boiler will need to be
removed, see diagrams 10.1 and 11.3 to remove undo the two
screws on the underside of the front casing. Undo the two
screws on the front of the inner front panel and lift off. Remove
the four screws from the chassis front and remove it by pulling
it out at the top from its retaining slots.
NOTE: When replacing chassis front panel ensure the bottom
fits behind the lip.
The side panels can be hinged sideways to aid replacement of
parts.
Undo and remove the three screws securing each side panel to
the boiler, two at the front and one at the top.
13.2 Spark Electrode
For access, refer to section 13.1.
Remove the spark plug lead, earth lead and two securing
screws. Withdraw the spark electrode carefully from the
combustion chamber, see diagram 11.2.
13.3 Igniter Unit
For access, refer to section 13.1.
Remove ignition lead and electrical connections, see diagram
11.4.
Remove igniter unit by removing two securing screws.
13.4 Ignition Lead
For access, refer to section 13.1.
Refer to diagram 11.4.
Pull the spark plug style connector off the spark electrode and
the spade connector connected to the igniter unit.
Diagram 13.1
MAIN PCB
RETAINING
CLIPS
FUSE
12411