Vulcan-Hart VL2GAS, VL3GMS, VL2GMS, VL3GAS, VL2GSS, VL3GSS VL Series Steamer Electrical Operation

Page 43

VL SERIES STEAMER - ELECTRICAL OPERATION

3.Water level reaches LLCO (low water level cut- off) probe for the water level control and to the auxiliary LLCO probe for the auxiliary low level cut-off control.

A.Power to terminal 9 on the water level control.

1)LLCO relay energizes, LLCO-2 (N.O.) contacts close and LED lights.

B.Power to terminal LLCO on the auxiliary low water level cut-off control.

1)LLCO relay energizes, LLCO-2 (N.O.) contacts close and LED lights.

NOTE: LLCO relays will remain energized and LLCO LED’S will remain lit until the water level drops below the LLCO probes or the power switch is turned OFF.

4.Water reaches LL (low level) probe.

A.Power to terminal 2 on the water level control is present but no switching occurs.

5.Water reaches HL (high level) probe.

A.Power to terminal 6 on water level control.

1)The inverse latching relay of the board is energized, changing the state of ILR-1 (N.O.) and ILR-2 (N.C.) contacts. The inverse latching relay will remain energized through the alternate latching path of ILR-1 contacts until the water level recedes below the low level probe.

2)With ILR-2 contacts open, HL relay is de-energized, HL-3 (N.O.) contacts open and HL LED goes out.

3)Water fill solenoid is de-energized. (boiler fill time approx. 11 min.)

6.Manual re-set switch is pressed, energizing the coils on the high limit and low water relays.

A.Contacts 1 & 9 on the high pressure relay change state and lock from N.C. to N.O. and turn off the high pressure indicator light. Concurrently, Contacts 1 & 9 on the low water relay change state and lock from N.C. to N.O. and turn off the low water indicator light.

B.Contacts 5 & 9 on the high pressure relay change state and lock from N.O. to N.C., supplying power (NEUTRAL) to one side of the auxiliary gas solenoid valve.

Concurrently, Contacts 5 & 9 on the low water relay change state and lock from N.O. to N.C., supplying power (L1) to the other side of the auxiliary gas solenoid valve.

NOTE: For both relays to energize, the high pressure switch must be closed and the water level in the boiler must be above the low level cut-off probes in order for LLCO-2 (N.O.) contacts to close.

C.Auxiliary gas solenoid valve is energized and opens to allow gas flow.

D.As long as the ignition control module is sensing a pilot flame, the internal main valve (MV) contacts close (N.O.) on the ignition control module. The main gas valve is energized and gas begins flowing.

E.Burners light and water in boiler begins to heat up.

7.Boiler steam pressure reaches upper limit set point of 11 PSI. (Approximately 15 min.)

A.Cycling pressure switch opens, main gas solenoid valve de-energizes, gas flow shuts off and burners go out.

B.As boiler heats up and builds pressure, some by-pass water/steam is produced which runs into the steam drain box. This causes the cold water condenser (CWC) solenoid to cycle, cooling the drain water. This solenoid is powered by the CWC thermostat.

NOTE: Steam should not be seen entering a compartment until the manual steam control arm is pulled forward and locked.

8.Boiler steam pressure drops below lower limit set point of 9 PSI and the cycling pressure switch closes.

A.Boiler steam pressure is maintained by the cycling of the pressure switch between the upper and lower set point limits. The cycling pressure switch continues to energize and de-energize the main gas solenoid valve starting and stopping the flow of gas, which in turn, cycles the burners on and off. This sequence continues until one of the following occurs:

1)Boiler pressurizes to 15 PSI, causing the high limit pressure switch to open. At that time, the auxiliary gas valve de-energizes, shutting off the gas flow to the burners and the high limit failure light will come on. This light will stay lit until the pressure drops below the lower limit set point of 6 PSI and the manual re-set switch is pressed.

2)Boiler water level drops below the LLCO probes for the water level and the auxiliary low level cut-off controls which then de-energizes the LLCO relays, changing the contact state of LLCO-2 (N.O.) back to open. This de- energizes the main and auxiliary gas solenoid valves. The gas solenoid valves will remain off and the low water level light will come on and stay lit until the water level rises above the LLCO probes and the manual re-set switch is pressed.

Page 43 of 88

Page 42 Page 44
Image 43
Page 42 Page 44
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.
Top Page Image Contents