Servicing - gledhill GB10 Installation And Servicing Instructions

7.1. General
IMPORTANT
DO NOT TAMPER WITH THE APPLIANCE OR BREAK ANY SEALS ON THE PRE-SET CONTROLS
(BURNER OFFSET PRESSURE AND THROTTLE SETTINGS) OF THE APPLIANCE. IF IT IS
NECESSARY TO REPLACE ANY OF SEALED PARTS, THEN THESE SHOULD BE REPLACED BY
FACTORY SET AND SEALED PARTS SUPPLIED BY GLEDHILL LTD
Measurement of the products of combustion can be achieved by connection of a probe to the
combustion analyser test point on the flue elbow connecting the boiler to the flue system.
Before commencing with a service or replacement of parts the boiler should be isolated from the
electrical supply and the gas supply should be turned off at the gas isolation valve.
All routine service requirements can be achieved by the removal of the front cover, inner casing panel
and lowercasing panel as described in section General 9.1. Unless stated otherwise parts are
replaced in the reverse order of removal. Servicing should always include the removal of any debris
from the condensate trap. After completing any servicing of gas carrying components ALWAYS test
for gas soundness and carry out a functional test of the controls.
7.2. Spark & Flame sensing electrodes
For access refer to section General 9.1
Remove the spark plug style connector from the electrode and earth lead in the case of the spark
electrode. Remove the two retaining screws with a Torx T20 driver, carefully withdraw the electrode
from the combustion chamber. Inspect the tips for damage, clean away any debris and check the
spark gap is 3.5-4.5mm. Check the electrode gasket for signs of damage and replace if necessary.
7.3. Burner
For access refer to section General 9.1 & 9.1.1
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 in 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.
7.4. Combustion Chamber and Heat Exchanger
For access refer to section General 9.1 & 9.1.1
Remove loose debris from the combustion chamber using a soft brush and vacuum cleaner. Carefully
flush any remaining debris by spraying water through to the condensate trap (ensuring the water is
kept away from electrical components).
7.5. Condensate Drain
For access refer to section General 9.1
Remove the yellow cap from the bottom of the trap and remove any solids found. Remove the flexible
condense pipe connection from the bottom of the heat exchanger and the drain connection
downstream of the condense trap. Remove the condensate trap and flush water through the trap to
remove any remaining solids. Reassemble the trap and connection ensuring a watertight seal is
achieved.
VER: 02.3 _260505
Supplied By www.heating spares.co Tel. 0161 620 6677

7. SERVICING

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