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32
8.3
TO REMOVE/ REPLACE THE
ELECTRODES (Fig.55)
8.3.1
Remove the front casing panel (sect. 8.1.4).
8.3.2
Remove the ignition and/or sensing lead
plug .
8.3.3
Unscrew the two securing screws and put
them into a container so that they don’t get
lost.
Withdraw the Spark electrode and /or
Sensing electrode carefully from the
combustion chamber cover being
careful not to damage the seal.
8.3.4
Replace with new electrode in reverse
order. Ensure gap is correct and there
is a good seal when replaced.
8.4
TO REMOVE/REPLACE THE FAN
(Fig. 56-56A)
8.4.1
Remove front and left hand side panel of
the case (sect. 8.1.4).
8.4.2
Unplug plastic plug from the DC fan supply
8.4.3
Unscrews the four screws that securing fan
to the gas manifold, check the gasket and
replace if necessary.
8.4.4
Reassemble in reverse order. Ensure wires
are connected correctly
Fig.55
Fig.56A
Fig.56
