25
To Remove The Pilot Unit
•
Remove the 9 loose coals, front base coal, rear base coal and ceramic back wall.
•
Remove the front cover castings.
•
Support the inlet isolating elbow to avoid straining the pipework and
disconnect the appliance from the elbow.
•
Detach the burner unit from the convection box by removing 2 screws (see
figure 41). Carefully lift the burner unit forward making sure that the unit does
not snag on any leads. Rest the burner on its front face to allow access to the
pilot and gas tap.
•
Disconnect the electrode lead from tab underneath the electrode.
•
Undo the thermocouple nut at the gas tap.
•
Disconnect the pilot pipe from the pilot unit elbow.
•
Remove the first screw
s
ecuring the dust cage to the
pilot unit & burner (see
figure. 42). Carefully remove the dust cage and place aside.
•
Remove the second screw securing the
pilot unit to the burner. Remove the
pilot unit and place it aside.
•
Refit in the reverse order. Make sure no leads are trapped.
Note
1 The pilot unit must be replaced as a whole assembly. Its individual components
are not separately replaceable.
2. Once removed, ensure that the dust cage is cleaned before refitting. Make sure
that it locates squarely onto the pilot unit without any gaps between the cage edges and the pilot
unit
To Completely Remove The Burner Unit
•
Remove the ceramics and front cover castings, disconnect the appliance and
detach the burner unit from the convection box as described for removing the
pilot unit – see above
•
Detach the burner wiring loom connection at the right side of the burner
(see figure 43).
•
Refit in the reverse order. Make sure no leads are trapped.
To Remove The Gas Tap/F.S.D & Solenoid Assembly.
•
Remove the burner unit as described above.
•
Disconnect the electrode lead from tab underneath the electrode.
•
Undo the thermocouple nut at the gas tap.
•
Disconnect the inlet pipe at the solenoid junction.
•
Disconnect the main burner pipe at the tap end.
•
To gain access to the pilot pipe connection, detach the fan switch bracket
from the burner control bracket by removing two screws (see figure 44).
•
Disconnect the pilot pipe at the tap end.
•
Pull off the control knob.
•
Remove the gas tap fixing nut.
•
Disconnect the two burner wiring loom leads from the solenoid unit.
•
Disconnect the earth lead from the solenoid unit.
•
Pull the tap & solenoid unit clear.
•
To separate the tap from the solenoid, detach the solenoid unit at the gas tap end
•
Replace in the reverse order.
To Remove The Piezo Generator
•
Remove the gas tap, FSD & solenoid unit as described above.
•
Make sure that the tap is in the off position.
•
Remove the circlip holding the piezo unit to the tap.
•
Remove the piezo unit.
•
Replace in the reverse order.
Fig. 44 Fan switch fixings
Fig. 43 Burner loom connection
Figure 42 Pilot unit fixings
(Dust cage not shown for clarity)
Figure 41 Burner fixing points
