Vulcan-Hart C24GA6, C24GA10, ML-136021, ML-136022 Electrical Operation, Water Level Controls

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C24GA SERIES CONVECTION STEAMERS - ELECTRICAL OPERATION

ELECTRICAL OPERATION

WATER LEVEL CONTROLS

Low Level Cut-Off and Differential Control

The steamer is equipped with three water level sensing probes (high, low and low level cut-off) and a single 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 input voltage (120VAC) is applied across termi- nals 11 and 12 of the Water Level Control (WLC). This is applied to the primary 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 the internal relays (LLCO, HL, and ILR). As water enters the generator, it becomes part of the water level control’s circuit. When the water level in the generator reaches a probe, that circuit is completed.

The inverse latching relay (ILR) of the board is de- energized, leaving the ILR-1 (N.O.) and ILR-2 (N.C.).

When the main power switch is turned on, power is supplied to the water level control (WLC) board which energizes the high level (HL) relay and illuminates the HL relay LED. With the HL-3 contacts closed, the generator 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-2 contacts closed the heat source is then energized. 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 on the board is energized and locked through the low level probe (LL) and ILR-1 contacts. With ILR-2 contacts open, this de-energizes the HL relay and the HL LED goes out. With the HL-3

contacts open, the generator 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 fill solenoid is energized through HL-3 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.

SEQUENCE OF OPERATION

Refer to schematic diagrams 00855693 , 00855424 and 00856656.

Initial Fill and Preheat

Conditions:

A.Power switch off.

B.Cold water thermostat open.

C.Drain cold water condenser solenoid de-energized.

D.Timer delay output open.

E.Normally closed solenoid de-energized.

F.Generator connected to correct voltage (120VAC).

G.Generator properly grounded.

H.Gas and water supply valve(s) on.

I.Main gas valve manual valve in on position.

J.Cycling pressure switch closed.

K.Air pressure switch open.

F35425 (February 2006)

 

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Contents Convection SteamersTable of Contents Low Level Cut-Off & Differential Control Introduction Installation Operation Cleaning SpecificationsGeneral ToolsRemoval and Replacement of Parts Covers and PanelsCabinet Base Left Side Panel Door AssemblyCooking Compartment Door Cabinet Base Rear PanelDoor Gasket Door HandleDoor Latch Assembly Compartment ControlsMain Burner Generator AssemblyGAS Combination Control Valve Covers and Panels Fill and Cold Water Solenoid Valves PILOT/SPARK Probe Flame Sensor Service Procedures and Adjustments Blower AIR Pressure Adjustment AIR Pressure SwitchPilot Burner Adjustment Operating Pressure Switch Thumb Wheel Adjustment Inlet Water/Steam Strainer Automatic Ignition Systems Spark Ignition Control TestManifold Pressure Adjustment Ignition TestCooking Compartment Latch AdjustmentControls Items Required not provided Striker AdjustmentDeliming the Generator C24GA Automatic Drain US GAL Capacity Steam GeneratorProbe Inspection Cooking Cycle TestGeneral Sequence of Operation Electrical OperationWater Level Controls Low Level Cut-Off and Differential ControlC24GA Series Convection Steamers Electrical Operation Compartment control Units after Dec Schematic Diagrams Generator Schematic DiagramSchematic Diagram Compartment Controls Standard Schematic Diagram Compartment Controls Constant Steam Component Location Cabinet Base Generator Component Function Cabinet Base Generator Drain Valve Timer Blower Air Pressure SwitchSuper Heater Assembly Hold ThermostatComponent Location Cooking Compartment Component Function Cooking Compartment Troubleshooting Troubleshooting Sequence of Operation Step Function DescriptionTroubleshooting Chart Symptom Possible CausesSymptom Possible Causes Symptom Possible Causes Condensed Spare Parts List F35425 February

C24GA6 ML-136021, C24GA10 ML-136022, C24GA6, C24GA10, ML-136021, ML-136022 specifications

The Vulcan-Hart C24GA series is renowned in the commercial kitchen industry for its high-quality performance and efficient cooking capabilities. This series includes models C24GA6 and C24GA10, which are designed with versatility and reliability at their core. These models cater to a wide range of culinary demands, ensuring that chefs can prepare a variety of dishes with ease.

The C24GA6 features six powerful burners, providing ample cooking space and heat output for busy kitchens. Its robust construction ensures durability, while an easy-to-clean stainless steel exterior makes maintenance hassle-free. The burners are designed for quick ignition, and the adjustable flame control allows for precise temperature adjustments, ideal for simmering sauces or achieving the perfect sear.

On the other hand, the C24GA10 model is equipped with ten burners, making it suitable for larger establishments that require additional cooking power. Similar to the C24GA6, it incorporates seamless stainless steel components and a design that meets the rigorous demands of a professional kitchen. Both models boast a high BTU output, ensuring that meals are prepared quickly and efficiently, which is essential during peak hours.

The C24GA series also integrates advanced technologies that enhance its functionality. The burners utilize a standing pilot ignition system, ensuring a reliable start-up every time. This technology minimizes downtime and allows chefs to focus on cooking rather than troubleshooting equipment.

In addition to the C24GA series, Vulcan-Hart offers the ML-136021 and ML-136022 models, which complement the cooking arsenal in any kitchen. These models are expertly designed to provide the same level of reliability and performance. They follow the same principles of durability and ease of maintenance that Vulcan-Hart is known for.

The ML-136021 and ML-136022 models feature streamlined designs that fit seamlessly into any workspace. With efficient heat distribution and user-friendly controls, these models are perfect for both experienced chefs and culinary students alike.

Together, the Vulcan-Hart C24GA6, C24GA10, ML-136021, and ML-136022 models represent a comprehensive cooking solution that meets the varied needs of commercial kitchens. With their powerful burners, durable construction, and advanced technologies, these units ensure top-notch performance and efficiency for all cooking requirements.
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