– 34 –
4. Heating circuit is powered.
A. No ignition light (red) comes ON.
B. Module performs a self diagnostic test
for 4 seconds.
C. Second valve (main) on the gas valve is
energized. Gas starts to flow to burners.
D. Sparking begins, the no ignition light
goes out and burners light.
NOTE: Sparking continues for up to 7 seconds or until
a flame is established on both burners. If a flame is
sensed on both burners, the no ignition light stays out
and burner remains lit. If a flame is not sensed on both
burners after 7 seconds of sparking, the no ignition
light comes back on, second valve (main) on the gas
valve is de-energized and gas flow to the burner
stops. Ignition trial cycle repeats after a 15 second
purge between cycles for two additional tries before
locking out. To reset after a lockout, turn power
switch (S1) OFF then ON.
5. Oven reaches set temperature.
A. Temperature controller de-energizes
internal relay and the normally open (N.O.)
contacts open.
1)
Heat light goes out.
2)
Power removed from power level
control.
3)
Power level control light goes out.
B. Power removed from heat relay.
C. Heat relay normally open (N.O.) contacts
OPEN.
D. Power removed from heating circuit.
1)
Second gas valve de-energized.
6. The oven will continue to cycle on the
temperature controller until the doors are
opened or master switch (S1) is turned to the
OFF or OVEN COOL position.
Timer Cycle
The timer operates independently of the heating
cycle. Additional time can be set or the timer can be
turned OFF throughout the cooking cycle.
1. With the master switch turned ON, power is
supplied to timer.
A. Set the timer to desired time.
B. Contacts 1 & 3 close, timer motor is
energized and timing down begins.
2. Time expires on timer.
A. Contacts 1 & 3 open, timer motor is
de-energized and timing stops.
B. Contacts 1 & 4 close.
1)
Buzzer energized and sounds. The
buzzer continues to sound until the
timer dial is set to the OFF position
or additional time is set.
Cool Down Cycle (Solid State Temperature
Controller)
1. Conditions.
A. Oven is ON.
B. Oven cavity temperature needs to be
lowered.
C. Doors are open.
1)
Convection fan de-energized.
2)
Thermostat de-energized.
a.
Heat light out.
b.
Power level light out.
c.
Power level control de-energized.
d.
Power removed from heat relay.
3)
24 V transformer de-energized.
4)
Cooling fan de-energized.
Содержание SG4C ML-114876
Страница 2: ...2 VULCAN HART COMPANY 2002...
Страница 38: ...38 WIRING DIAGRAMS WIRING DIAGRAM SG4D SG6D OVENS 120 200 V 424372 Rev F...
Страница 39: ...39 WIRING DIAGRAM 734 COMPUTER CONTROL DUAL BURNER CONVECTION OVENS 120 200 V 426574 Rev C...
Страница 40: ...40 SCHEMATICS GAS CONVECTION OVEN SG4 WITH STD CONTROL 424373 1 REV C...
Страница 41: ...41 GAS CONVECTION OVEN SG4 WITH WATLOW 734 CONTROL 426575 1 REV C...
