Solid top low flame
adjustment screw
Solid top burner test point
3.5.2 Injectors
Injectors are best cleaned with a wooden splinter or soft
fuse wire. Metal reamers may distort or increase orifice
size and their use should be avoided.
3.6 THERMOCOUPLES and
FLAME FAILURE DEVICE (FFD)
3.6.1 Open Top Flame Failure Device Magnet Unit
To remove and replace FFD magnet unit, the following
procedures must be followed. Isolate Gas supply.
Remove hob components as detailed in Section 3.2.2.
Undo FFD thermocouple at rear of tap, undo FFD section
at tap rear and withdraw.
Replace in reverse order.
3.6.2 Open Top Thermocouple
Remove hob as detailed in Section 3.2.2.
Remove nut that secures thermocouple to burner
support bracket and pull thermocouple through support
bracket from underside.
Undo thermocouple connection at FFD section of gas tap
and carefully remove thermocouple.
Replace in reverse order, taking care to position tip
correctly in relation to burner ports. Thermocouple
tip should be 35mm above support bracket. Ensure
thermocouple does not touch any part of burner when
fully re-assembled. (Fig 11)
3.6.3 Oven Flame Failure Device Magnet Unit
The oven FFD magnet unit is an integral thermostat part.
Remove hob components as detailed in Section 3.2.2
to gain access to FFD. Isolate Gas supply.
Undo FFD thermocouple at thermostat rear. Undo rear
FFD section and withdraw. Replace in reverse order.
Figure 12
3.6.4 Oven Thermocouple
To Remove Thermocouple
Remove facia panel as detailed in Section 3.2.1.
Remove hob fitments. See Sections 3.2.2 or 3.2.3
as required.
Remove RH side panel.
Undo thermocouple nut at thermostat rear.
Open over doors. remove shelves and base plate.
Undo n u t that secures thermocouple to burner
bracket. Remove sensor from burner bracket.
Release thermocouple from clips in oven chamber.
Remove Thermocouple by feeding through slot in oven
side panel. Replace in reverse order, taking care not
to over tighten, ensure side wall insulation around
thermocouple access slot is undamaged
then ensuring
position as indicated in Figure 12.
3.7 OVEN IGNITERS and ELECTRODES
Igniter is piezo spark type and contains no batteries.
Unit comprises piezo spark igniter, lead and electrode
assembly. Lead and earth lead are push-fit at igniter
end. Oven igniter electrode, Thermocouple, and burner
ports should be aligned as indicated in Figure 12.
3.7.1 Oven Igniter
Remove facia panel as detailed in Section 3.2.1.
Disconnect igniter earth wire and .
P u l l b a c k insulated sleeve and remove igniter lead
connection from spark igniter.
Undo nut that secures igniter in position. Remove
Igniter. Replace in reverse order,
3.7.2 Oven Electrode
Remove oven shelves and base plate.
R e m o v e t i e w r a p s a n d p u l l b a c k
i n s u l a t e d s l e e v e .
Disconnect igniter lead from electrode.
Undo fixing that secures electrode to burner bracket.
Remove electrode and replace in reverse order ensuring
position is as indicated in Figure 12.
Note: Care should be taken not to damage electrode
Important: if spark is present but burner will not light,
ensure gas is present and dimensions are as (Fig 12)
Figure 11
