Vulcan-Hart VC6ES, VCIEC, VC6ED Electrical Operation, Component Function, SSR1 & SSR2, 1CON & 2CON

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FULL SIZE ELECTRIC CONVECTION OVENS - ELECTRICAL OPERATION

ELECTRICAL OPERATION

COMPONENT FUNCTION

Power Switch (S1)	Determines the mode of operation; ON, OFF, or COOL DOWN.
Oven Light Switch (S2)	Controls the oven cavity lights.
Fan Speed Switch (S3)	Controls blower motor speed between High and Low settings (VC4ES/6ES
	and VC4ED/6ED only).
Alarm/Buzzer	Signals the end of a "Cook" cycle when cooking time expires.
Cook Timer	Counts the "Cook" time of the product and signals the buzzer at the end of
	the cycle (VC4ES/6ES and VC4ED/6ED only).
Door Switch	Allows the oven to operate when the doors are closed but stops the oven
	from operating when the doors are opened.
Blower Motor	Operates the oven cavity blower (convection fan).
Transformer (T1)	Provides 24VAC power to the Computer Control (VC4EC/6EC only).
Transformer (T2)	Provides 240VAC power to the oven control circuit and blower motor
Solid State temperature	(480VAC models only).
Solid State temperature
Control	Monitors temperature sensor and regulates the oven cavity temperature by
	controlling 2CON to energize the heating elements when the control calls
	for heat.
High Limit Thermostat	Protects the oven from temperatures above 550°F by removing power
	from the heating circuit. Auto resets at 500°F.
Computer Control	Monitors temperature sensor and regulates the oven cavity temperature by
	controlling 2CON to energize the heating elements when the control calls
	for heat. Also, counts the "Cook" time (normal cooking) of the product and
	signals the electronic alarm at the end of the cycle. If "Cook" & "Hold"
	mode is selected, when the "Cook" (then hold) time expires, the oven
	heating stops and the oven enters "Hold" mode. Once the oven cavity
	temperature drops to 150°F, the heat comes back on and the oven cycles
	at this temperature to hold the cooked product. Cook & Hold is standard on
	computer models. The selected mode also determines the fixed blower
	speed of High for "Cook" and Low for "Cook & Hold".
SSR1 & SSR2	When SSR1 is energized by computer control, connects power to blower
	motor for High fan speed operation in normal "Cook" mode. In "Cook &
	Hold" Mode only, SSR1 is de-energized and SSR2 is energized by
	computer control and connects power to blower motor for Low fan speed
	operation (VC4EC/6EC only).
1CON & 2CON	Provides power to heating elements when both are energized. 1CON is
	energized when power switch is turned ON. 2CON is energized by the
	temperature control when a call for heat is made.
Power ON Light	Lit whenever the power switch (S1) is turned to ON or Cool Down mode.
Heat Light	Lit whenever temperature control is calling for heat.

Page 29 of 60		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 PartsLeft Side Panel Control Panel ComponentsRemovable Components Covers and PanelsComponent 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 RemovalDisassembly Door Catch Roller Assembly Independent DoorsAssembly Removal Mechanical KX ThermostatHigh Limit Thermostat Lamp AssemblyInterior Lights LampCooling 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 Menu Display Parameter Data Alternating onProbe Test Solid State Relay TestComputer Control Operational Test Computer Control Temperature CalibrationKEY Code CalyHEY Restore Factory Settings Component Function Electrical OperationSSR1 & SSR2 1CON & 2CONComponent 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 Sequence of Operation VC4ED, VC6ED with Solid State Temperature ControlCook Cycle VC4ES, VC6ES with Mechanical KX ThermostatVC4EC, 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