17
14.5
Removing The Slider Control / FSD (Fig 20.)
(a) Remove the outer case as previously described in
Section 14.1.
(b) Disconnect all four gas pipes from the left side of the
slider control / FSD.
(c) Disconnect the thermocouple from the bottom of the
slider control / FSD.
(d) Remove the linkage retaining screw.
(e) Remove the two mounting screws and withdraw the
slider control / FSD.
(f) Refitting is the reverse procedure of removal.
14.6
Removing The Gas Shut Off Tap
(a) Remove the controls assembly as previously described
in Section 14.2.
(b) Disconnect both of the gas pipe connections.
(c) Loosen the locknut holding the gas tap in position.
(d) Slide the tap off the bracket from the left.
(e) Refitting is the reverse procedure of removal.
Important Note
: Ensure that the linkage pin is correctly
located in the gas shut off tap actuating cam when
refitting (Fig 21.).
14.7
Removing The Pilot Injector
(a) Remove the controls assembly as previously described
in Section 14.2.
(b) Remove the pilot injector.
(c) Refitting is the reverse procedure of removal.
14.8
Removing The Thermocouple
(a) Disconnect the yellow interrupt wires from the
thermocouple.
(b) Remove the thermocouple from the bottom of the slider
control / FSD.
(c) Remove the thermocouple from the pilot.
(d) Refitting is the reverse procedure of removal.
14.9
Removing The Ignition Electrode
(a) Remove the outer case as previously described in
Section 14.1.
(b) Disconnect the tubing nut on the thermocouple at the
pilot end.
(c) Disconnect the ignition lead from the ignition electrode.
(d) Disconnect the tubing nut on the ignition electrode.
(e) Refitting is the reverse procedure of removal.
Linkage retaining screw
Disconnect
these 4
gas pipes
Disconnect
thermocouple
from bottom
of valve
Fig 20.
Correct position of linkage pin and shut
off tap actuating cam when in OFF position
Fig 21.
14.10
Pressure Relief Panels
If dealing with a complaint resulting from a delayed ignition problem it is necessary to ensure that the pressure relief panels,
in the firebox top, are properly located and that the gaskets are undamaged. If the gaskets are faulty change them as
detailed below:-
(a) Lift each pressure relief panel in turn and remove the old gaskets.
(b) Fit the new gaskets ensuring that they are properly located over the upturned flanges.
© Lower the pressure relief panels onto the gaskets ensuring that they seat properly.
