SEQUENCE OF OPERATIONS
SG4D/SG6D with Solid State Temperature Controller
Schematic
Cook Cycle
1.Conditions
A.Oven connected to correct voltage.
1)L1 (HOT) to power switch (S1).
2)L2 (neutral or second line) to one side of the following components: L1 of the power level control, power ON light, heat light, temperature controller board terminal 9 (120VAC) or terminal 10
B.Oven properly grounded.
C.Gas supply valve ON.
D.Gas combination control valve ON.
E.Power switch (S1) OFF.
F.Oven light switch (S2) ON/OFF (position has no affect on the function of the normal cooking cycle).
G.Temperature controller dial set to lowest temperature (fully counterclockwise).
H.High limit switch closed (position has no affect on the function of the normal cooking cycle).
I.Timer in the OFF position.
J.Oven doors closed.
K.Door switch contacts closed.
L.Oven cavity temperature below 140°F.
M.Power level switch to 100%.
2.Set temperature controller dial to desired temperature.
A. Contacts J3 and J5 close.
3.Power switch (S1) is turned ON.
NOTE: Power is available to the oven light switch
A.Component cooling fan energized.
B.ON light (amber) is lit.
C.Power to timer terminal C.
D.Transformer (T1) energized.
1)Power (24 VAC) to one side of the following components: heat relay (R3) normally open (N.O.) contact.
2)First valve (safety) on the gas valve energized. Gas does not flow to the burner until the 2nd valve (main) is energized.
3)Ignition module energized.
E.Heating light is lit.
F.Power to one side of centrifugal switch.
G.Convection fan motor is energized through (S3)
1)When the convection fan motor reaches operating speed, the centrifugal switch (N.O.) on the motor closes.
H.Heat relay is energized.
1)N.O. contacts close.
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