Glow-worm Ultracom 38cxi Installation And Servicing page 43

FRONT SECURING
INSULATION SCREW (4)
SPARK
ELECTRODE
Supplied By www.heating spares.co Tel. 0161 620 6677
13 Servicing
Disconnect the electrical plug from the fan.
BURNER
Disconnect the spark electrode plug and earth lead, refer to
diagram 13.6.
Remove the five combustion chamber/burner door securing
nuts, see diagram 13.7, these should be discarded and
replaced with the new nylocs nuts supplied in the burner door
seal kit.
Gently remove the fan, gas valve and burner assembly from
the combustion chamber.
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.
Remove and discard the burner door seal and replace with
new, see diagram 13.7.
NOTE: Removal of the burner is not necessary during a
normal service, but if it is removed it will require a new
GASKET
gasket, see diagram 13.8.
13.6. Combustion Chamber and Heat
Exchanger
NOTE: If the functional checks did not indicate poor
combustion then it is not necessary to service this
component.
Remove loose debris from inside the combustion chamber
using a soft brush and vacuum cleaner.
Diagram 13.8
Carefully flush by spraying water into the heat exchanger, any
remaining debris should pass through the condensate trap
(Ensure the water is kept away from electrical components).
43
Diagram 13.7