Vulcan-Hart Official Vulcan Hart Manuals for Electric Combi Oven Operation

ELECTRIC COMBI OVEN - ELECTRICAL OPERATION

A.Press the temp up or down keys to set the Delta T differential.

3.Press probe key.

A.Press the time up or down keys to set the final product temperature.

4.Press Start/Stop key to begin the cooking cycle.

NOTE: The Delta T differential can not be adjusted without stopping and starting the cycle again. The Delta T differential is retained in memory and is displayed when the Delta T key is pressed.

NOTE: The probe temperature can be adjusted throughout the cooking cycle by pressing the up or down time keys. The adjusted temperature is retained in memory and is displayed when the time key is pressed.

NOTE: There is a four second time delay after pressing the off key to cancel the shut down sequence and resume normal operation.

A.Displays and LED’s turn off.

B.All power removed from the heating elements and cavity fan(s).

C.Vent motor energized and operates till vent opens.

D.Door unlocks and opens.

E.Drain pump activated for 45 seconds on 6 and 10 levels; 60 seconds on 20 levels.

3.At the end of the drain cycle.

A.Cavity lamp de-energized.

B.Cooling fan(s) de-energized.

A.Start/Stop LED on.

5.Internal product temperature reaches probe set point temperature.

A.Buzzer sounds for approximately 10 seconds on and 45 seconds off. The buzzer continues to cycle at these times until the Start/Stop key is pressed.

B.Probe temperature flashes in the time display.

C.Convection and/or steam generator heating elements de-energized.

D.Cavity fan motor(s) remain energized.

6.Press Start/Stop key to end the heating cycle.

A.Start/Stop LED off.

B.Buzzer off.

C.Delta T method remains selected with Delta T and probe LED’s on.

D.Cavity fan motor(s) de-energized.

E.Probe and Delta T temperatures remain as entered unless the heating mode or set point temperatures are changed or the oven is turned off.

NOTE: If time key is pressed accidently, the Delta T method is canceled and the LED turns off.

Programed Cooking Operation

Refer to the Installation & Operation Manual for programing instructions.

Powering Down

1.The control can be in any heating mode and the door in the open or closed position.

2.Press the off key.

Manual Oven Controls

This sequence of operation is written for the combi oven models that use the deluxe manual or standard manual oven controls. Control features that are not available on the standard manual control, are indicated where the differences occur. The three heating modes outlined below (convection, steam and combi) are for manual operation of the oven. The timed and temperature probe cooking methods are then outlined.

Powering Control

1.Conditions.

A.Oven connected to correct voltage supply and properly grounded.

B.Oven control (CPU/display/keypad board) are powered but not on; displays and LED’s are off.

NOTE: When oven is initially powered, the buzzer sounds and the displays, LED’s and service error lights come on for three seconds then turn off.

C.Oven control configured properly. See

“CONFIGURATION MODE - MANUAL CONTROLS” outlined under “SERVICE PROCEDURES AND ADJUSTMENTS”.

D.Voltage tap wire on power supply board set to the proper machine voltage.

E.Door is properly closed but not locked and the door handle position is closed.

1)Door handle magnet is positioned over magnetic door reed switch (N.O.) and is closed.

F.High limit thermostats closed (manual reset).

G.Thermal fuses closed.

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