Vulcan-Hart C24EA3 480V BASIC service manual Water Level Control Components, Water Level Controls

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MODEL C24EA - WATER LEVEL CONTROL COMPONENTS

WATER LEVEL CONTROL COMPONENTS

WATER LEVEL CONTROLS

Low Level Cut-Off & Differential Control

The steamer is equipped with three water level sensing probes (high, low and low level cut-off) and a water level control board. The water level control board performs two functions: 1) Provide low level cut-off protection to shut off the heat source in case the water level drops below the low level cut-off (LLCO) probe. 2) Perform as a differential level control to maintain the water level between the low and high water level probes.

The water level control (WLC) board has input voltage (120VAC) across terminals 11 and 12 which powers the primary side of the transformer. On one side of the transformer secondary, power is provided to the control by a series path through chassis ground (terminal 10). The other side of the transformer secondary (12VAC) is attached to the probe that directs power to the other side of WLC board relay coils (LLCO and HL) and to the inverse latching relay (ILR) electronic circuit on the WLC board. As water enters the generator, it becomes part of the WLC board circuit. When the water level in the generator reaches a probe, that circuit is completed.

The inverse latching relay of the WLC board is de- energized, leaving the ILR-1 (N.O.) and ILR-2 (N.C.) contacts in their shelf state.

When the main power switch is turned on, power is supplied to the WLC board which energizes the high level (HL) relay, closes HL-1 normally open contacts, and illuminates the HL relay LED. With the HL-1 contacts closed, the slow fill solenoid is energized and water begins filling the generator.

When the water level reaches the low level cut-off (LLCO) probe, the LLCO relay is energized and illuminates the LLCO LED. With the LLCO-1 contacts closed, the heat source can be energized provided the auxiliary control(s) in the heating circuit are satisfied. The LLCO relay will remain energized and its LED will stay lit until the water level in the generator drops below the LLCO probe.

When the water level reaches the low level (LL) probe, power to terminal 2 on the WLC board is present but no switching occurs.

After the water level reaches the high level (HL) probe, the inverse latching relay of the WLC board is energized and locked through the low level probe

(LL)and ILR-1 contacts. With ILR-2 contacts open, HL relay is de-energized and the HL LED goes out. With the HL-1 contacts open, the slow fill solenoid is de-energized, stopping the flow of water into the generator.

When the water level drops below the low level (LL) probe, power is removed from the inverse latching relay, the HL relay energizes through ILR-2 and HL contacts change state. The slow fill solenoid is energized through HL-1 to refill the generator and the HL LED is lit. The HL relay and LED will toggle on and off during a cooking cycle as needed.

F25213 (May 2006)

 

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Contents C24EA Series Atmospheric Steamers C24EA3 Basic ShownTable of Contents Models Covered GeneralIntroduction Steam Cooking208V 240V 480V SpecificationsWater Conditioning Tools Reference MaterialLubrication Component Lubrication TypeTOP Cover Covers and PanelsRight and Left Side Panels Model C24EA Covers and PanelsScrew Location Rear PanelTOP Cover Removed for Clarity Gasket DoorRemoval Model C24EA DoorDoor Handle InstallationRemoval Removal and Disassembly Latch AssemblyAssembly Hinge Bearings Door Latch AdjustmentOpening a Jammed Door Drain BOX Removal and ReplacementAdjustment Model C24EA Drain BOXModel C24EA Cooking Compartment Cooking CompartmentProfessional Model Shown Model C24EA Cooking Compartment HIGH-LIMIT Thermostat ThermostatsHold Thermostat Model C24EA ThermostatsCondensate Thermostat Model C24EA Timer TimerCovers and Panels Professional Model Shown Model C24EA Heating Element Heating ElementBasic Model Shown Overhead View of Heating Element Diagnostic ChecksTotal 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 ValveNon-Filtered Cold Water Solenoid Valve Manual Drain Valve BasicCovers 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 Model C24EA Condensed Spare Parts List 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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