Vulcan-Hart C24EA3 208/240V PRO, C24EA5 480V BASIC Sequence of Operation, Basic Model

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MODEL C24EA - ELECTRICAL OPERATION

SEQUENCE OF OPERATION

A.Internal latching relay (ILR) coil on WLC board energizes.

Refer to the correct wiring diagram for model being serviced when reviewing sequence of operation.

NOTE: If power switch is set to off when service voltage is applied, steamer will enter the timed drain cycle.

Basic Model

1.Conditions

A.Steamer connected to correct voltage.

1)120VAC present across X1 & X2 on secondary side of main transformer.

B.Steamer connected to water supply with correct water requirements.

C.Power switch is off (drain handle pulled out).

1)Time delay relay timed out. Timer has no output on terminal 1.

D.Condensate thermostat is open.

E.High limit thermostat closed.

F.Pressure switch is closed.

G.Hold thermostat open.

H.Drain open and steam generator tank (referred to as tank) is empty.

I.Steamer door open.

J.Timer is off.

K.Water level control (WLC) and tank properly grounded.

2.ON/OFF lever pushed in.

A.Manual linkage closes drain valve and operates power switch.

1)N.O. contacts close.

B.Amber power light illuminates.

C.X1 potential to L1 of WLC board.

1)120VAC across L1 & L2 of WLC board.

2)High level coil (HL) energized on WLC board. HL LED on WLC board lights.

3.Slow fill solenoid energized through closure of HL contacts. Tank fills.

4.Water level reaches Low Level Cut-Off (LLCO) probe.

A.LLCO coil is energized. LLCO LED on WLC board lights.

B.LLCO N.O. contacts close enabling heating element circuit.

5.Limiting and regulating contactor coils energize. Power to heating element. Tank water heats.

6.Water level reaches Low level (L) probe.

A.No action as internal latching relay (ILR-1) contacts are open.

B.High level (HL) coil de-energized by ILR-2 contacts opening.

C.Slow fill solenoid de-energized by opening of HL contacts on WLC board.

8.Tank water reaches 195E F. Hold thermostat contacts close.

A.Relay K1 energizes. Timer circuit is enabled through closure of N.O. contacts K1-5/3 and K1-6/4.

B.Temperature in tank is maintained at 195E F by hold thermostat control of regulating contactor through relay contacts K1-1/5.

9.Timer knob set to time other than zero.

A.Timer motor energized through closure of N.O. contacts K1-6/4 when time set is greater than zero. Door switch closure allows 120VAC across timer wires 18 & 19. Timer counts down from set time.

B.Tank temperature maintained by control of regulating contactor coil through N.O. contacts K1-6/4 and (Timer -1/3, door switch, K1-5/3).

10.Steamer door is closed.

A.Regulating contactor remains energized as long as time remains on Timer and door is closed.

1)Heating element energized continuously.

11.Temperature of condensate exiting cooking cavity increases to above 135EF.

A.Condensate thermostat closes energizing cooling solenoid 1SOL. Condensate is cooled in drain box before entering facility drain system.

12.Door opened during timed cook cycle.

A.Timer continues count down until time equals zero even if steamer door is opened.

B.Regulating contactor de-energized until below 195EF.

13.Time reaches zero.

A.Buzzer is energized through N.O. contacts K1-6/4 and Timer - 1/4.

1)Buzzer remains energized until timer knob is turned to OFF, new time is set or drain handle is pulled out (power switch off).

14.Drain handle pulled out. Tank drains.

A.Power light (1LT-Amber) turns off.

7.Water level reaches high level (H) probe.

F25213 (May 2006)

 

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Contents C24EA Series Atmospheric Steamers C24EA3 Basic ShownTable of Contents Models Covered GeneralIntroduction Steam CookingSpecifications 208V 240V 480VWater Conditioning Tools Reference MaterialLubrication Component Lubrication TypeTOP Cover Covers and PanelsRight and Left Side Panels Model C24EA Covers and PanelsRear Panel Screw LocationTOP Cover Removed for Clarity Gasket DoorRemoval Model C24EA DoorInstallation Door HandleRemoval Latch Assembly Removal and DisassemblyAssembly Door Latch Adjustment Hinge BearingsOpening a Jammed Door Drain BOX Removal and ReplacementAdjustment Model C24EA Drain BOXCooking Compartment Model C24EA Cooking CompartmentProfessional Model Shown Model C24EA Cooking Compartment HIGH-LIMIT Thermostat ThermostatsHold Thermostat Model C24EA ThermostatsCondensate Thermostat Timer Model C24EA TimerCovers and Panels Professional Model Shown Heating Element Model C24EA Heating ElementBasic Model Shown Diagnostic Checks Overhead View of Heating ElementTotal kW Super Heater Model C24EA Super HeaterCurrent Resistance Ohms Model C24EA Water Level Control Components Water Level Control ComponentsWater Level Controls Low Level Cut-Off & Differential ControlWater Level Probes WiringWater Level Control Board Water Level ControllerValve Type Machine Flow Rate GPM Fast Flow Model C24EA Water Level Control Components CleaningFiltered and NON-FILTERED Water Solenoid Valves Filtered Water Solenoid ValveManual Drain Valve Basic Non-Filtered Cold Water Solenoid ValveCovers and Panels View from Left Side of Steamer Motorized Drain Valve Professional Drain Tank ManuallyModel C24EA Water Level Control Components Basic Model On/Off Switch Check Switch Actuation SWITCHES, Buzzer and SolenoidsON/OFF Switch Basic Model On/Off Switch AdjustmentDoor Switch Professional ModelsPressure Switch Check Typical Operating PressureVacuum Relief Solenoid Damage to generator tank weldment could occurBuzzer Steam Generator Tank Model C24EA Steam Generator TankPressure Switch Electrical Operation Component FunctionSwitch 1PAS, Pressure Switch 1S, PowerSwitch 2S, Door Timer 1TRComponent Location Electrical Control PanelWater Level Control Board Front Panel Steam Generator and Back Panel Sequence of Operation Basic ModelProfessional Model Model C24EA Electrical Operation Wiring Diagrams Heating Element WiringModel C24EA Electrical Operation Model C24EA Electrical Operation Model C24EA Electrical Operation Model C24EA Electrical Operation Troubleshooting Model C24EA TroubleshootingT E S Condensed Spare Parts List Model C24EA Condensed Spare Parts ListBasic Professional Qty

C24EA5 208/240V BASIC, C24EA3 480V BASIC, C24EA5 208/240V PRO, C24EA3 480V PRO, C24EA3 208/240V BASIC specifications

Vulcan-Hart is a renowned name in the commercial kitchen equipment industry, known for producing high-quality cooking appliances. Among their range of products, the Vulcan-Hart C24EA series stands out for its versatile and efficient electric convection ovens. The C24EA5 and C24EA3 models come in varying power configurations, catering to different operational needs.

The C24EA5 480V BASIC and PRO versions offer a robust solution for high-volume cooking. The BASIC model is designed for establishments seeking an economical yet effective option, while the PRO variant incorporates advanced features for enhanced performance. Both models operate at 480 volts, allowing them to work efficiently in larger commercial kitchens with higher power supply availability. They are equipped with an efficient heating system, ensuring consistent cooking temperatures and reduced energy consumption.

On the 208/240V side, the C24EA3 BASIC and PRO models provide flexibility for kitchens with lower voltage supply. These ovens deliver reliable performance while maintaining energy efficiency. The BASIC model offers essential functionalities suitable for smaller establishments, whereas the PRO model includes features such as programmable controls and a digital display for precision cooking and ease of use.

All models in the C24EA series are constructed with durable stainless steel exteriors, ensuring longevity and ease of cleaning. The ovens feature convection heating, which circulates hot air for even cooking results. This technology allows for a variety of cooking methods, from baking to roasting, making it a versatile choice for diverse kitchen needs.

Key features include multiple cooking racks for simultaneous baking, a temperature range that accommodates various recipes, and a user-friendly control panel that allows chefs to set and monitor cooking times efficiently. Additionally, the ovens are designed with safety features like cool-touch doors and durability in high-traffic environments.

Overall, the Vulcan-Hart C24EA series offers a range of electric convection ovens that combine reliability, efficiency, and versatility, making them ideal for any commercial kitchen looking to enhance its culinary capabilities. Whether on the 480V or 208/240V power supply, these ovens ensure optimal performance tailored to the specific needs of different food service operations.
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