10
c) Undo nut which secures thermocouple head to mounting bracket and withdraw.
d) Replace in reverse order. Position thermocouple head as indicated in Figure 6. Ensure FFD nut is
not over tightened. A quarter
–turn past hand tight is sufficient to prevent fracture of electrical point.
e) Replace all parts in reverse order.
3.4.2 Oven Flame Failure Device /Gas Cock
a) Remove vertical control panel and RH outer panel as described in Sections 3.2.3 & 3.2.1
b) Undo pilot supply pipe compression nut. Ease pipe forward and clear.
c) Undo two compression nuts on control inlet and outlet pipes.
d) Remove fixings which secures Z bracket support. Partly withdraw control.
e) Undo thermocouple nut.
f) Remove Z bracket and fit it on new control.
g) Replace all parts in reverse order. Check gas joints for gas tightness. Adjust by-pass screw to
achieve a flame cone height of approx. 5mm. Check flame stability by turning control knob between
high and low flame operation.
3.4.3 Oven Thermocouple
a) Remove vertical control panel and RH outer panel as described in Sections 3.23 and 3.2.1
b) Undo thermocouple nut at FFD rear after partially removing control.
c) Open bottom front panel and disconnect nut which secures thermocouple head to pilot assembly
and withdraw.
d) Fit new thermocouple. Ensure the head is pushed firmly into position before tightening nut and that
the FFD nut is not over tightened.
A quarter turn past hand tight must only be employed to prevent fracture of this electrical joint.
e) Replace panels in reverse order.
3.4.4 Solid Top Flame Failure device / Gas Cock
a) Remove control panel. See Section 3.2.4.
b) Remove solid top hob fillings and inner tray.
c) Undo both large compression nuts on inlet and outlet pipes.
d) Disconnect thermocouple nut.
e) Undo pilot supply pipe on ignition flame supply pipe.
f) Undo fixings that secure control fixing plate to bracket.
g) Remove fixing plate from old control and secure it to replacement.
h) Replace all parts in reverse order.
3.4.5 Solid Top Thermocouple (G1006BX / G1026BX)
a) Remove bullseye rings, hob fillings, and inner tray.
b) Undo thermocouple to FFD nut.
c) Undo locknuts which secure thermocouple to bracket.
Withdraw thermocouple.
d) Replace in reverse order. Position thermocouple tip,
38mm above base as shown in Figure 7.
3.4.6 Twin Bullseye (Thermocouple Replacement)
a) Remove Bullseye rings and hob castings.
b) Remove burner centre support.
c) Remove burner controls cover panel.
d) Remove control panel as detailed in Section
3.2.4.
