Vulcan-Hart VCE20H 126172 Electric Combi Oven - Electrical Operation, Convection Mode

ELECTRIC COMBI OVEN - ELECTRICAL OPERATION

H.Cavity vent open.

I.240VAC supplied to relay board.

J.Steam generator empty.

K.Water supply on.

2.Rotate the selector knob to one of the cooking modes (Heat, Steam or Combi) to turn the oven on.

A.Oven control runs a self diagnostic test.

1)“HHH” is displayed in the time display.

2)Total cooking hours is displayed in the temperature display.

3.Control passes self diagnostic test.

A.Set point temperature is displayed (default or last temperature that was set).

B.Time displays “ - -:- - ” and time Led turns on.

C.Oven cavity lamp energized.

D.Cooling fan(s) energized.

E.Cavity vent motor energized.

1)Cavity vent closes.

NOTE: When the oven is turned on, the default condition of the cavity vent is closed. Pressing the VENT key opens the cavity vent and turns the Vent LED on. Pressing the VENT key a second time closes the cavity vent and turns the vent LED off. Vent key is present on deluxe manual controls only.

F.Door motor energized.

1)Door closes and locks.

a.When the door is locked, switch 2SW closes and door motor is de-energized. On 20 levels only, switch 6SW also closes.

b.Switch 3SW opens. On 20 levels only, switch 5SW also opens.

NOTE: Pressing the DOOR key automatically unlatches and opens the door (sightly) for 3 seconds. If door is not disengaged manually (door handle pulled out), it will automatically close. While open, all heating stops and the cavity vent opens.

g.Steam generator fill solenoid is energized until proper water level is reached then turns off. See “WATER LEVEL SENSORS” under “COMPONENT FUNCTION”.

4.Proceed to the appropriate heating mode (convection, combi or steam) for the continuation of the sequence.

Convection Mode

1.Conditions exist as described in “POWERING CONTROL”.

2.With the selector knob rotated to HEAT, the cooking cycle begins.

A.Time LED is on and “- -:- - “ is displayed in the time display.

B.Cavity set point temperature (the last temperature that was set) is displayed in the temperature display.

C.Convection heating elements energized and cycle as described under “HEATING REGULATION”.

D.Steam generator pre-heats (initial start up only) as described under “STEAM PRE- HEAT”.

NOTE: When degree symbol shows in the temperature display, convection and/or steam generator heating elements are energized.

1)Drain cool down solenoid energized.

NOTE: Whenever steam generator heating elements are on, the drain cool down solenoid is energized.

E.Cavity fan motor(s) energized.

3.Press the temp key to set the operating temperature (the last temperature that was set is displayed; adjustable range is 35 to 518°F). The temperature symbol (°F or °C) will flash in the temperature display to indicate the cavity set point temperature can be adjusted.

A.Rotate the adjustment knob clockwise or counterclockwise to adjust the setting (temperature symbol stops flashing).

B.If a pause of 5 seconds is made during or at the end of the adjustment, the temperature symbol will begin to flash. When the temperature symbol stops flashing, the temperature can no longer be adjusted and the cavity set point temperature is displayed.

NOTE: To display the actual cavity temperature for several seconds, press and hold the temperature key.

4.Oven control monitors cavity temperature and cycles the convection heating elements as necessary, to maintain set point temperature.

A.The operating temperature remains as entered unless the operating temperature setting is changed.

Page 50 of 68