11
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.
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 nut
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 .Pull back
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. Remove tie wr aps and pull back insulated
sleeve.
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.
