Vulcan-Hart VC6ES, VCIEC, VC6ED, VC6EC Timer Cycle, Cooking KX Thermostat or Solid State Control

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FULL SIZE ELECTRIC CONVECTION OVENS - ELECTRICAL OPERATION

Timer Cycle, Cooking

(KX Thermostat or Solid State Control)

NOTE: The "Cook" 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 power switch turned ON, power is supplied to "Cook" timer terminal 1.

2.Set "Cook" timer to desired time .

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

3.Time expires on "Cook" timer .

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.

Cool Down Cycle

(KX Thermostat or Solid State Control)

1.Conditions.

A.Oven is ON.

B.Oven cavity temperature needs to be lowered.

C.Doors are open (door switch contacts OPEN).

D.Fan speed switch (S3) set to "Hi".

2.Power Switch (S1) turned to COOL DOWN.

A.Power ON light (Amber) goes out.

B.Convection fan motor energized.

NOTE: Fan speed switch (S3) can be set to operate at high or low fan speed.

3.If doors are CLOSED (door switch contacts CLOSED):

A.Power ON light (Amber) comes ON.

B.1CON coil is energized but heating elements are not powered.

C.Component cooling fan energized.

D.Power is supplied to:

1)"Cook" timer terminal 1. If a time is dialed, timer will operate and buzzer will sound when timer reaches zero.

2)Oven cavity light switch (S3) wire #1. Turns cavity lights ON/OFF; does not affect "Cool down" cycle.

4.The oven will remain in this condition until the power switch (S1) is turned to the OFF or ON position.

VC4EC, VC6EC (Computer Control)

Schematic diagram 6536 will be used to explain the electrical sequence of operation or both the "Cook" cycle and the "Cook and Hold" cycle.

Cook Cycle

1.Conditions.

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

B.Power switch (S1) OFF.

C.Computer control is setup properly and ready to use.

NOTE: The set point temperature of the computer control will be the last temperature that was set.

D.High limit thermostat CLOSED.

E.Oven doors closed (door switch contacts CLOSED).

F.Oven cavity temperature below 140°F.

2.Power switch (S1) turned ON.

A.1CON coil energized.

B.24VAC transformer (T1) is energized.

1)Computer control is energized and performs a power ON self test before energizing outputs. If the control passes self test, then the outputs are energized and operation sequence continues. If control does not pass self test then the corresponding error code is displayed.

C.Component cooling fan energized.

D.Power is connected to:

1)Terminal 1 on solid state relay 1 (SSR1 - load side) and solid state relay 2 (SSR2 - load side).

2)Pin 3 (C3-3) on computer control (input "IN-2").

3)Oven cavity light switch (S2). Turns cavity lights ON/OFF; does not affect "Cook" cycle.

3.Computer control senses oven cavity temperature through probe input. With the oven cavity temperature below set point, the output from pin C3-2 is activated.

A.Oven "Heat Light" on the control comes ON.

B.2CON coil energized.

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F25105 (December 2001)

 

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Contents VC4ED Shown VC4E & VC6E SeriesTable of Contents Full Size Electric Convection Ovens General VC6ES VC6ED VC6EC SpecificationsVC4ES VC4ED VC4EC Covers and Panels Removal and Replacement of PartsCovers and Panels Control Panel ComponentsLeft Side Panel Removable ComponentsComponent Panel Components Temperature Probe Solid State ControlHeating Elements Front AccessLeft Side Elements Shown Alternate AccessBlower and Motor Service Procedures and Adjustments Door SwitchOven Doors and Bearings Independent Doors Door WindowOven Doors Simultaneous Doors Assembly RemovalMechanical KX Thermostat Door Catch Roller Assembly Independent DoorsDisassembly Assembly RemovalLamp Lamp AssemblyHigh Limit Thermostat Interior LightsCooling FAN Solid State Temperature Control Calibration Service Procedures and AdjustmentsMechanical KX Thermostat Calibration Temperature Probe Test Solid State Control Solid State Temperature Control TestTroubleshooting 208 240 480 Temp F OhmsAmps PER Voltage KW PER Element Ohms PER Lead Blower Adjustment Door Catch Roller Adjustment Independent Doors Door AdjustmentIntroduction Door Switch AdjustmentProcedure Operation Setup modeComputer Control Solid State Relay Test Alternating onMenu Display Parameter Data Probe TestComputer Control Operational Test Computer Control Temperature CalibrationKEY Code CalyHEY Restore Factory Settings 1CON & 2CON Electrical OperationComponent Function SSR1 & SSR2Component Location Mechanical Temperature ControlFull Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation VC4EC/6EC Plug, Socket and Components Cook & Hold Standard VC4ES, VC6ES with Mechanical KX Thermostat VC4ED, VC6ED with Solid State Temperature ControlSequence of Operation Cook CycleVC4EC, VC6EC Computer Control Timer Cycle, Cooking KX Thermostat or Solid State ControlCool Down Cycle KX Thermostat or Solid State Control Cool Down Cycle Temperature and Time Cycle CookingCook and Hold Cycle VC4ES, VC6ES with Mechanical KX Controls SchematicsVC4ES, VC6ES with Mechanical KX Controls VC4ED, VC6ED with Solid State Temperature Control VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation VC4EC, VC6EC Computer Control, 480V Roast & Hold Standard This page Purposely Left Blank VC4ES, VC6ES with Mechanical KX Control Wiring DiagramsFull Size Electric Convection Ovens Electrical Operation VC4ES, VC6ES with Mechanical KX Control Full Size Electric Convection Ovens Electrical Operation VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation VC4EC, VC6EC Computer Control, 480V Roast & Hold Standard Full Size Electric Convection Ovens Electrical Operation ALL Models TroubleshootingFull Size Electric Convection Ovens Troubleshooting Control Operational Test Computer Control Models onlyComputer Control Error CodesCode & Problem Probable Cause Solution T E S Part Number Description VC4ES VC4ED VC4EC VC6ES VC6ED VC6EC Condensed Spare Parts List
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