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13.9
To Gain Access to the Electrical Control Components
13.9.1
Remove the burner unit - See section 13.4.
13.9.2
Detach the control unit from the convection box left side flange
by removing two screws (see figure 32). Carefully pull the unit slightly
forward.
13.9.3
Detach the fan wiring loom connection. (see figure 33).
13.9.4
Detach the plastic vacuum tube from the metal vacuum pipe
(see figure 33).
13.9.5
Detach the control unit cover by removing one screw (see figure
34).
13.9.6
The control unit can be pulled forward as far as the slack
in the mains lead will allow.
Do not stress the mains lead.
13.9.7
When replacing the unit make sure that all the leads are
correctly and firmly connected (see wiring diagram figure 15),
that no leads are trapped and that the vacuum tube is firmly
connected.
13.10
To Remove the Distribution block
13.10.1
To gain access see section 13.9.
13.10.2
Remove the two screws fixing the block to the control bracket.
13.10.3
Disconnect the earth lead from the control bracket.
13.10.4
Remove the pressure switch cover (figure 35). Disconnect the
three leads (Yellow, orange & white) from the air pressure switch.
13.10.5
Disconnect the two leads (Brown & blue) from the mains cable
connection block.
13.10.6
Replace in the reverse order. Make sure that all the leads are
correctly and firmly connected (see wiring diagram figure 15), that no leads
are trapped and that the vacuum tube is firmly connected.
13.11
To Remove the Air Pressure Switch
13.11.1
To gain access see section 13.9.
13.11.2
Detach the pressure switch from the control bracket by removing
two screws, nuts and shakeproof washers (see figure 36).
13.11.3
Remove the pressure switch cover (figure 35). Disconnect the three
leads (Yellow, orange & white) from the air pressure switch.
13.11.4
Detach the plastic vacuum tube from the pressure switch.
13.11.5
Replace in the reverse order. When replacing make sure that the vacuum
tube is connected to the shank on the pressure switch closest to the centre of the
appliance (marked ) - not the shank closest to the control bracket. Firmly
attach the tube at both ends.
Make sure that all the leads are correctly and firmly connected (see wiring
diagram figure 15) and that no leads are trapped.
Figure 36 Pressure switch
fixings
Fig. 35 Pressure switch cover
removal
Figure 34 Control cover fixing
Figure 33 Fan loom & vacuum pipe
connection
Figure 32 Electrical control unit
fixings
