Vulcan-Hart VL2GPS GAS Burners, Automatic Ignition Systems GAS Models, Air Shutter Adjustment

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VL SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS

D.With the thermocouple disconnected, connect the meter leads to the tube and threaded end. Turn the power switch ON and light the pilot. Hold down the OFF/PILOT/ON knob and allow the pilot to heat the thermocouple for one to two minutes. Take an open circuit reading and compare with the chart below.

1)If the reading is less than the minimum or thermocouple is not operating as described, replace the thermocouple as outlined under

“PILOT AND THERMOCOUPLE ASSEMBLY (GAS MODELS)” in

“REMOVAL AND REPLACEMENT OF PARTS” then check for proper operation.

3.If after checking and/or replacing thermocouple, the pilot or main burners are still not functioning properly, then a problem in the gas combination control valve exists as well. Replace the combination control valve as outlined under “GAS COMBINATION CONTROL VALVE” in “REMOVAL AND REPLACEMENT OF PARTS” then check for proper operation.

NOTE: Gas combination control valves are not serviceable and should not be disassembled. Once you have isolated the problem to this control, replace it. Do not attempt to repair the assembly.

THERMOCOUPLE

DC MILLIVOLT

READINGS

 

CLOSED CIRCUIT

OPEN CIRCUIT

 

(CONNECTED)

(DISCONNECTED)

 

 

 

 

 

 

Typical

15

 

 

 

 

Range

10 - 20

20 - 35

GAS BURNERS

The main gas burners are located under the boiler for heating and number five to seven depending on the steamer model. They are made of aluminized steel with lanced type ports and have adjustable air shutters in the front. Fixed orifice type hoods extend from the manifold to establish gas flow to each burner.

Air Shutter Adjustment

1.Ignite the burners and allow to heat up for at least five minutes.

2.Verify the manifold pressure as outlined under

“GAS MANIFOLD PRESSURE ADJUSTMENT”.

3.Loosen the set screw on the burner being adjusted. Closing the air shutter will decrease primary air to the burner and opening the shutter will increase primary air the burner.

4.Monitor the burner flame and set the air shutter opening as follows:

A.Open up the air shutter until the inner portion (blue) of the flame lifts off the burner port and then turn the air shutter back until the flame touches the burner port again. A slight tinge of orange and yellow in the flame is acceptable. An extremely yellow flame indicates too little primary air (oxygen), producing poor burning characteristics and the heating efficiency drops off. A by product of this would be soot (carbon).

Factory air shutter settings are: natural gas - open approximately ½ inch; propane gas - fully open.

5.After the air shutter adjustment is made, tighten the set screw.

Inspection

Remove gas burners by lifting burner up and sliding it to the rear just enough to clear the gas orifice hood. Lower the front end of burner and bring it forward under the gas manifold pipe. Inspect burner for clogged or damaged ports. Clean or replace as necessary. When reinstalling burners, assure that locating pin is in the hole for proper positioning and to prevent burner from rolling over.

AUTOMATIC IGNITION SYSTEMS

(GAS MODELS)

When the main power switch is turned ON and the ignition control modules reset switch is in the ON position, the ignition control module is energized with 24VAC between terminals five and six.

High voltage is sent from terminal nine to the spark electrode and an output of 24 volts is sent from terminals two and three to the pilot coil in the combination valve, allowing gas to flow to the pilot. The sparking will continue for 90 seconds or until the flame sensor has confirmed that an adequate pilot flame is present.

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Contents VL Boiler Base Series Convection Steamers Table of Contents VL Series Steamers Water Conditioning IntroductionTools SpecificationsElectric Steamers Gas SteamersSteamer Operation Gas Powered Steam BoilerElectrically Powered Steam Boiler Regenerated Steam Powered BoilerManual blowdown Direct Steam Powered CookerBoiler Blowdown and Steamer Shut off Automatic blowdownStandard Automatic Prevent Power Switch Water Level Gauge AssemblyCycling Pressure Switch High Limit Pressure SwitchCheck Valve Handhole Cover AssemblyDelime Port Assembly Boiler Pressure GaugeCooking Light Red Compartment Power SwitchCooking Timer Thermal Switch Load CompensatorRemoval and Replacement of Parts VL Series Steamers Removal and Replacement of Parts Cooking Compartment Controls Component Configurations Electro Mechanical Water Level Gauge AssemblyWater Level Controls LOW Level CUT OFF and Differential Solid StateBoiler Assembly High Limit Thermostat Boiler Fill and Cold Water Condenser Solenoid Valves GAS Combination Control ValveDoor and Bushing Compartment Gasket and Door Screw NUT, Door and BushingsGasket Door Screw NutSteam Coil Heater ContactorsHeating Elements Boiler Clean-Out All Boiler ModelsInspection Deliming Only Models with Deliming Port Assembly Solid State Low level Cut-Off & Differential Control Water Level Controls TestElectro Mechanical Low level Cut-Off & Differential Control Water Level Probes Disassembly Compartment Pressure AdjustmentFill and Cold Water Solenoid Valves Boiler Blowdown Drain Solenoid Valve Boiler not Filling with WaterAll Models With Boiler Boiler Slow to PressurizeNewer Models Older ModelsRegenerated Steam Coil Steamers Inlet Water StrainerElectric Models Direct Steam ModelsVL Series Steamer Service Procedures and Adjustments GAS Burners Air Shutter AdjustmentAutomatic Ignition Systems GAS Models Spark Ignition Control Test TerminalsGAS Manifold Pressure Adjustment Regenerated Steam Older Models Heater Contactors Direct Steam ModelsVL Series Steamer Service Procedures and Adjustments Thermal Switch Prevent Automatic Models Steam Gate Valves Water Level Controls Electrical OperationSolid State Auxiliary Low Level Cut-Off Electro Mechanical Low level Cut-Off & Differential Control Electro Mechanical Auxiliary Low Level Cut-Off Initial Fill and Preheat Sequence of OperationVL Series Steamer Electrical Operation Water Refill After Initial Fill Cook CycleBoiler Blowdown/drain Electric ModelsCook Cycle Water Refill After Initial Fill Purposely Left Blank Manual Ignition, Standard Controls Electronic Ignition, Standard Controls Manual Ignition, CSD-1 Code Controls Electronic Ignition, CSD-1 Code Controls VL Series Steamer Electrical Operation Manual Ignition, Standard Controls VL Series Steamer Electrical Operation Electronic Ignition, Standard Controls VL Series Steamer Electrical Operation Manual Ignition, CSD-1 Code Controls VL Series Steamer Electrical Operation Electronic Ignition, CSD-1 Code Controls VL Series Steamer Electrical Operation Auto Blowdown, Standard Controls Auto Blowdown, Cal-Code Controls Auto Blowdown, Standard Controls contactor 1 std VL Series Steamer Electrical Operation Auto Blowdown, Standard Controls contactors 2 std VL Series Steamer Electrical Operation Manual Blowdown, Cal-Code Controls contactors 1 std aux VL Series Steamer Electrical Operation Auto Blowdown, Cal-Code Controls contactors 1 std aux VL Series Steamer Electrical Operation Auto Blowdown, Cal-Code Controls contactors 2 std aux VL Series Steamer Electrical Operation Manual Blowdown, Cal-Code Controls contactors 2 std aux VL Series Steamer Electrical Operation Standard and Cal-Code/CSD-1 Controls See Schematic and Wiring Diagrams Compartment Controls Manual Blowdown Older Models Auto Blowdown Older Models Schematic and Wiring Diagrams Compartment Controls Automatic Standard Manual ALL Models TroubleshootingContacts not closing to power boiler fill solenoid Schematic and Wiring Diagrams GAS Models only Symptom Possible CausesPilot not adjusted correctly. See Pilot

VL2GPS, VL3GPS, VL3GSS, VL2GSS, VL2GAS specifications

Vulcan-Hart is well-known in the commercial cooking equipment industry, providing durable and efficient products that cater to the needs of restaurants and foodservice operations. Their line of griddles, namely the VL3GAS, VL3GPS, VL3GMS, VL2GAS, and VL2GPS, showcases their commitment to high-quality performance and innovative cooking technologies.

The Vulcan-Hart VL3GAS is a gas griddle, featuring a robust stainless steel construction that ensures longevity and resilience in a bustling kitchen environment. It offers a smooth, hot cooking surface that allows for optimal heat retention and distribution, ensuring that food cooks evenly. With a 3/4-inch thick steel plate, it provides excellent thermal conductivity, making it ideal for high-volume cooking. This model is designed with easy-to-use controls, which makes it convenient for chefs to operate.

The VL3GPS model is a gas-powered griddle that comes equipped with a patented grease management system, which aids in maintaining a cleaner cooking environment. This system helps to separate grease from food and minimizes flare-ups, enhancing safety during cooking. Additionally, the griddle features a temperature control that allows chefs to set precise cooking temperatures, ensuring consistent results.

Moving to the VL3GMS, this model introduces increased versatility with its combination of gas and optional electric features. It’s tailored for establishments that require flexibility in their cooking strategies. The VL3GMS is also designed with a spacious cooking surface, making it suitable for preparing a wide array of dishes simultaneously.

The VL2GAS is a two-burner gas griddle that is specifically tailored for smaller kitchen operations or those with limited space. Its compact design does not compromise on performance, still providing a durable cooking surface and reliable temperature control. This model is ideal for smaller cafes or food trucks where space is at a premium.

Lastly, the VL2GPS complements the VL2GAS with its grease management system. This enhances hygiene and ensures that cooking remains efficient and safe. Both VL2 models offer easy startup and shutdown procedures, making them user-friendly for chefs working in fast-paced environments.

Overall, the Vulcan-Hart VL series griddles combine quality construction, innovative technology, and efficient design. Whether it’s the three-burner or two-burner options, these griddles meet the demands of commercial kitchens, providing reliable cooking solutions that serve the dynamic needs of the foodservice industry.
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