Service Completion - Glow-worm Ultracom 24cxi Installation And Servicing

18.9.1 Spark electrode
Disconnect the electrode inlet (3) and the grounding cable (2).
Remove the 2 spark electrode retaining screws (4).
Carefully remove the electrode from the combustion
chamber.
Check that the extremes of the electrode (6) are not
damaged.
Clean away any accumulation of dirt and check that the
distance between the two electrodes is between 3.5 and 4.5
mm.
Check that the gasket (5) is not damaged. Replace if
necessary.
18.9.2 Dismantling the burner
b
Warning: The gasket (12) must be replaced each
time the burner is dismantled.
Disconnect the spark electrode connector (6) from the igniter
unit.
Remove the gas pipe (17).
Remove the connectors from the gas valve (1) and the fan
(15).
Remove the retaining screw of the silencer.
Loosen the 4 nuts (7).
Remove the burner group from the heat exchanger (11).
be damaged. Should it be damaged, replace the heat
exchanger.
The burner gate insulation should not be damaged Replace
if damaged.
18.9.3 Cleaning the heat exchanger
Clean the coil (19) in the heat exchanger (11) with water.
18.9.4 Burner control
The burner (13) does not require maintenance and should
not be cleaned.
Check that its surface is not damage. Replace the burner if
necessary.
assemble the burner group as described in the following
chapter.
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18.9.5 Re-assembling the burner group
Place the burner group on the heat exchanger (11).
Progressively tighten the 4 nuts (7) in an alternate order.
Reassemble the silencer.
Connect the gas tube (17) with a new gasket to the burner
group.
Connect the spark electrode connector (6) to the igniter unit.
Connect the connector to the gas valve (1) and the fan (15).
Open the appliance gas input.
Check the watertightness of the gas connection.

18.10 Service completion

Re-check the combustion, see chapter "Combustion check".
On completion of the service, the "Benchmark" Service Record
sould be completed.
MAINTENANCE
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