3.5 PIEZO IGNITER/SPARK ELECTRODE
The igniter is a piezo spark type. The electrode is
mounted upon pilot burner bracket and switch is adjacent
to MFC. The lead has a push on connection at both ends.
3.5.1 Removal of Igniter Switch
Remove igniter lead connection to switch.
Undo fixings that secure switch flange to control
compartment and remove device.
Replace in reverse order.
3.5.2 Removal of the Electrode
Remove igniter lead connection from electrode and
remove nut located below electrode. Withdraw electrode
downward from pilot burner bracket.
Replace in reverse order.
3.6 THERMOSTATS
The user thermostat is an EGO, snap action electric
control with a centre stem adjustment of temperature up
to 190°C.
The safety stat is an EGO model with interrupter with a
maximum fixed setting of 230°C. This interrupts
thermocouple signal from pilot and subsequently shuts
down gas supply if user thermostat fails and causes the
oil to overheat.
Note
Manual intervention is required to reset control in event of
cut-out.
To Reset
Remove black plastic safety cover and push reset button
when oil temperature drops below 200°C.
In the event of repeated failure, replace safety stat.
3.6.1 Removal of Operating Thermostat
Isolate main gas supply and drain cool oil from pan.
Remove control knob from user thermostat and undo
fixings alongside user thermostat spindle.
Undo control panel fixings. Follow thermostat phial
capillary tube to pan boss in front wall and undo small
compression nut that seals tube.
Remove phial cover plate from inside pan and withdraw
thermostat phial. Disconnect thermostat electrical
connections prior to removing thermostat.
Replace in reverse order.
3.6.2 Recalibration of User Thermostat
Remove knob from thermostat spindle taking care not to
rotate it in either direction as this would change setting.
Steady spindle and rotate calibration screw clockwise to
decrease and anti-clockwise to increase the temperature.
3.6.3 Checking the User Thermostat Calibration
Using a reliable thermometer immersed 25mm below oil
surface at pan centre. Measure oil temperature when a
steady condition has been established.
3.6.4 Replacementl of Safety Thermostat
Isolate gas supply and drain the cool oil from pan.
Undo fixings that secure safety thermostat to bracket.
Follow thermostat phial capillary tube to pan boss in front
wall and unscrew small compression nut that seals tube.
Remove phial cover plate from pan and withdraw phial.
Disconnect wires from terminal block.
Re-assemble parts in reverse order.
3.7 MULTIFUNCTIONAL GAS CONTROL
(MFC)
Unit is fitted with an SIT 820 Nova mV control
incorporating cock, governor, valve and flame failure
device.
3.7.1 Removal of Multifunctional Control
(MFC)
Isolate main gas supply.
Remove cover plates that surround MFC.
Disconnect thermocouple connection on MFC and pull
thermocouple clear. Undo thermopile connections and
withdraw.
Undo main gas inlet and outlet connections to MFC and
withdraw control. Replace in reverse order taking care
when reconnecting thermocouple.
DO NOT overtighten as this may cause damage,
hand tight plus a quarter turn is sufficient.
3.8 GOVERNOR
A governor is built in to the multifunctional control.
Refer to Sections 1.9 and 3.8.
Pilot adjustment screw
TH
TP
TH/TP
Burner pressure
adjustment screw
SIT Nova Multifunctional Control (MFC)
Summary of Contents for G3830
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