3.4 THERMOCOUPLES
3.4.1 Oven Thermocouple
To replace, carry out operations (a), (b) and (c) as
detailed in Section 3.3.3. Undo union nuts securing
thermocouple at control vlave and at pilot. Withdraw
through hole in oven wall. When replacing a
thermocouple, do not bend to less than 15mm radius,
and ensure that connections are soundly made but
nevertheless taking care not to overtighten union
nuts.
3.4.2 Open Top Thermocouple
Remove facia panel as detailed in Section 3.2.1.
Remove pan supports from hob then remove burner
heads, this allows access to the brass venturi.
Undo brass venturi and remove venturi and
aluminium bezel.
The thermocouple can now be seen protruding
through drip shed. Undo screws on drip shed
(4 x M5 on centre shed) and remove drip shed.
Burner support bracket is directly below burner
support bracket. Remove nut securing 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 from hob.
Repeat for all hob burners.
Replace in reverse order.
3.5 OVEN FUSE
This is located on twithdrawable control panel and is
of changing to cartridge re-wirable type. Use 5 amp
wire in event of a fuse blowing, investigate cause.
3.6 OVEN PIEZO UNIT
This is mounted on top of gas control valve and fixed
by two slotted head screws and one nut. Removal
and replacement is self-explanatory.
3.7 OVEN PILOT BURNER ASSEMBLY
To Remove
a) Remove bottom grille.
b) Undo union nuts securing pilot supply tube and
thermocouple. Pilot injector will be released - take
care not to lose it. Also release spark electrode
lead.
c) Remove the screws securing pilot bracket.
d) Remove pilot burner complete with mounting
bracket.
e) If desired, pilot burner can now be dismantled from
bracket by removing two small screws.
f) Re-assemble in reverse order.
Note
Fit injector to groove in brass nut before inserting it
into hole in body of pilot assembly.
3.8 REMOVAL and CLEANING of BURNERS
3.8.1 Oven Burner
a) Withdraw control panel and remove burner grille.
b) Remove pilot burner assembly as detailed in
Section 3.7..
c) From inside burner chamber, release compression
fitting nut on burner feed-pipe.
d) Remove hex screws securing main burner bracket
to oven base frame.
e) Remove burner complete with mounting bracket,
slightly left to clear pipe, then remove from front.
To Clean Oven Burner
Proceed as follows, remove all accumulated debris
from the burner by lightly brushing, afterwards
shaking or blowing clean.
3.8.2 Open Top Burner
Remove pan support from hob.
Remove burner head which fits loosely upon
aluminium bezel which is fixed to drip tray.
Undo and remove brass venturi and remove
aluminium bezel.
Undo screws which secure drip tray to hob and
remove drip tray. Burner support bracket is directly
below drip tray.
Undo burner body retaining nut and agas supply pipe
compression fitting.
Remove burner body.
Replace in reverse order.
3.9 INJECTORS
3.9.1 Oven Injector (Natural Gas Units Only)
a) Remove burner as detailed in Section 3.7 then
remove injector by undoing it from burner.
b) Separate injector from elbow fitting.
c) If injector requires cleaning, do so with a wooden
splinter or similar non-metallic instrument. Do not
broach with a drill as this might effectively increase
the diameter of injector orifice.
3.9.2 Open Top Injectors
a) Remove pan support and burner head.
b) Undo and remove brass venturi and place an
extended socket down centre of main burner body.
c) Undo and carefully remove injector.
d) Replace in reverse order.
3.10 OVEN DOOR SWITCH
To gain access, proceed as follows:
a) Withdraw control panel.
b) Remove screws holding microswitch bracket and
withdraw switch by moving it down and forward.
Note location of the wires (they are numbered) and
pull off connectors.
c) Remove microswitch from bracket.
d) Replace all parts in reverse order.
