Wolf WKGDX 126624, WKGX 126623, WKGC 126622 Timer Cycle Normal Roast Cooking, Roast and Hold Cycle

FULL SIZE GAS CONVECTION OVENS - ELECTRICAL OPERATION

b.When the convection fan motor reaches operating speed, the centrifugal switch on the motor closes. The heat relay (R3) is then energized, R3 relay contacts normally open (N.O.) close and the heating circuit is powered.

a)Ignition control module is energized.

b)No ignition light (red) comes ON, module performs a self diagnostic test for 4 seconds, 2nd valve (main) on the gas valve is energized. Gas starts to flow to the burner, sparking begins, the NO IGNITION light goes out and burner lights. Sparking continues for up to 7 seconds or until a flame is established. If a flame is SENSED, the NO IGNITION light stays out and burner remains lit.

If a flame is not SENSED after 7 seconds of sparking, the NO IGNITION light comes back on, 2nd 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.

4.Oven reaches set temperature and thermostat opens.

A.Heat light goes out.

B.Power removed from heat relay (R3).

1)R3 normally open (N.O.) contacts open.

a.Power removed from 2nd valve (main) on the gas valve and gas flow to the burner stops.

5.The oven will continue to cycle on the thermostat until the doors are opened or the power switch (S1) is turned to the OFF or OVEN COOL position.

Timer Cycle (Normal Roast Cooking)

NOTE: The ROAST timer (normal cooking) 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 power switch turned ON, power is supplied to timer.

2.Set ROAST timer to desired time (normal cooking).

A.Contacts 1 & 3 close, timer motor is energized and timing DOWN begins.

3.Time expires on ROAST timer (normal cooking).

A.Contacts 1 & 3 open, timer motor is de- energized and timing stops.

B.Contacts 1 & 4 close.

1)Buzzer energized and sounds.

NOTE: The buzzer continues to sound until the timer dial is set to the OFF position or additional time is set.

Roast and Hold Cycle

NOTE: Refer to the Owner's Manual for a detailed explanation of ROAST & HOLD cooking.

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: power ON light, heat light, oven cavity lights, buzzer, ROAST timer motor (normal cooking), ROAST & HOLD timer motor, heat relay coil (R3), convection fan motor (C), transformer primary (T1), relay coil (R4), motor speed relay coil (R1), hold relay coil (R2) and the component cooling fan.

B.Oven properly grounded.

C.Gas supply valve ON.

D.Gas combination control valve ON.

E.Power switch (S1) OFF.

F.Function switch (S3) set to ROAST & HOLD cycle.

G.Oven light switch (S2) ON/OFF (position has no affect on the function of the Roast & Hold cycle).

H.Control thermostat in the OFF position (OPEN).

I.High limit switch CLOSED.

F32700 (February 2006) Page 36 of 64