Glow-worm hxi and Gas Valve - Manual (Page 32)

32 0020008153-05
11 Servicing
GAS VALVE
Diagram 11.4
FAN
COMBUSTION
CHAMBER FRONT
SECURING NUTS
(5 OFF)
IGNITER UNIT
HEAT EXCHANGER
GAS VALVE
ELECTRICAL PLUG
IGNITION
LEAD
ELECTRICAL
LEAD
GAS PIPE
BRACKET
CHASSIS FRONT
RETAINING SLOTS
ELECTRODE
CONNECTOR
12453
EARTH SPADE
CONNECTOR
11.3 Burner
Refer to diagrams, 11.2,11.3,11.4 and 11.5.
Isolate the gas supply at the gas service cock.
Disconnect the gas supply at the gas service cock.
NOTE: DO NOT DISCONNECT AT THE GAS VALVE.
Remove the two gas pipe bracket securing screws from
underside of inner case, see diagram 11.1.
Drop down the control panel into the service position.
Remove the four screws from the chassis front, see diagram
11.3.
Remove the chassis front by pulling it out at the top from its
retaining slots.
NOTE: When replacing chassis front panel ensure the bottom
fits behind lip.
Disconnect the gas valve electrical plug at the gas valve, see
diagram 11.4.
Disconnect the electrical leads from the fan.
Remove the five combustion chamber front securing nuts, see
diagram 11.5.
Gently remove the fan, gas valve and burner assembly from the
combustion chamber complete with the gas pipe bracket and
seal.
Clean the burner with a soft brush taking great care not to
damage the front insulation. DO NOT use wire or sharp
instruments to clean the holes of the burner.
Inspect the burner for any signs of damage.
Removal of the burner is not necessary during a normal service.
NOTE: IF THE BURNER HAS TO BE REMOVED IT WILL
REQUIRE A NEW GASKET WHEN REFITTED.
When replacing the assembly ensure the sealing grommet is
correctly fitted.
Diagram 11.3
9247
CONTROL PANEL
SERVICE POSITION
SECURING
SCREW
(4 OFF)
CHASSIS
FRONT