VL SERIES STEAMER - ELECTRICAL OPERATION

 

NOTE: Power the internal contactors on

 

 

1) Boiler pressurizes to 15 PSI, causing

 

the low level cut-off and auxiliary low level

 

 

the high limit pressure switch to open.

 

cut-off will remain, until the water level

 

 

At that time, the auxiliary heating

 

drops below the LLCO probes or the power

 

 

element contactor(s) are de-

 

switch is turned OFF.

 

 

energized, shutting off power to the

4.

Manual reset switch is pressed (momentary).

 

 

heating elements. The pressure

 

 

switch will remain open until the

 

 

 

 

 

 

A. The auxiliary heater contactor is energized

 

 

pressure drops below the lower limit

 

supplying power to the heating elements

 

 

set point of 6 PSI. Boiler water level

 

and the heat light (amber) comes on.

 

 

drops below the LLCO (low water

 

1) Water in boiler heats up.

 

 

level cut-off) probes for the low level

 

 

 

cut-off and the auxiliary low level cut-

 

 

 

 

 

 

B. Internal relay on manual reset switch is

 

 

off controls, de-energizing the internal

 

energized.

 

 

contactor on both controls. This de-

 

1) Normally open contacts close and

 

 

energizes the main and auxiliary

 

 

 

heater contactors, shutting off power

 

lock to provide power to the auxiliary

 

 

 

 

 

to the heating elements. The heating

 

heater contactor and the heat light

 

 

 

 

 

elements will remain off until the

 

after the reset switch is released.

 

 

 

 

 

water level rises above the LLCO

 

 

 

 

 

5. Water reaches LL (low level) probe.

 

 

probes and the manual re-set switch

 

A. Power to terminal 7 on the differential

 

 

is pressed.

 

COOK CYCLE

 

level control is present but no switching

 

occurs.

1. A Cook cycle should not be started, until the

6. Water reaches HL (high level) probe.

initial fill and preheat is completed, in order for

 

A. Power to terminal 10 on the differential

the boiler steam pressure to be within

 

operational limits.

 

level control.

 

A.

Insert product into steamer.

 

1) The internal contactor coil on the

 

 

 

 

 

differential level controls is energized.

B. Compartment door is closed and screw

 

a. The normally closed contacts on

 

 

handle tightened down.

 

 

 

 

 

terminals 3 and 4 open, de-

C. Compartment steam control arm is pulled

 

energizing the boiler fill solenoid

 

 

forward and latches, allowing steam to

 

and the boiler stops filling.

 

 

enter compartment.

 

NOTE: The internal contactor coil has a

NOTE: Cool air and condensate exit through

 

locking path through contacts on terminals

the steam exhaust solenoid valve (N.O.) under

 

7 & 8 to the low level probe to keep the

“Full Free Venting” until the compartment

 

coil energized after the water level drops

temperature reaches 180°F. When the solenoid

 

below the high level probe.

valve energizes and closes, condensate will

7.

Boiler steam pressure reaches upper limit set

continue to exhaust through a small opening

the valve under “Limited Free Venting” until the

 

point of 11 PSI. (Approximately 15 min.)

 

solenoid valve de-energizes and re-opens, one

 

A. Cycling pressure switch opens, heater

 

minute before the end of a cook cycle.

 

contactor(s) de-energize and power to the

D.

Time is dialed on timer (past 5 minutes).

 

heating elements is removed.

 

 

 

1) Micro switch SW1 contacts change

 

NOTE: Steam should not be seen entering a

 

 

 

 

 

state from N.C. to N.O.

 

compartment until the manual steam control

 

 

 

 

 

2) Micro switch SW2 contacts also

 

arm is pulled forward and locked.

 

 

8.

Boiler steam pressure drops below lower limit

 

 

change state from N.C. to N.O.

E.

Compartment power switch is turned ON.

 

set point of 9 PSI and the cycling pressure

 

switch closes.

 

 

1) L1 (HOT) to one side of the thermal

 

 

 

 

 

 

A. Boiler steam pressure is maintained by the

 

 

switch.

 

cycling of the pressure switch between the

 

 

NOTE: L2 (NEUTRAL) is connected to the

 

upper and lower set point limits. The

 

 

 

 

 

other side of the buzzer, steam exhaust

 

cycling pressure switch continues to

 

 

 

 

 

solenoid valve, trip solenoid, pilot light and

 

energize and de-energize the heating

 

 

 

 

 

timer motor.

 

element contactor(s), which in turn, cycles

 

 

 

 

 

 

 

the heating elements on and off. This

 

 

 

 

sequence continues until one of the

 

 

 

 

following occurs:

 

 

 

 

 

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Page 46
Image 46
Vulcan-Hart VL3GPS, VL3GMS, VL2GMS, VL3GAS, VL2GAS, VL2GSS, VL3GSS, VL2GPS service manual Cook Cycle
Page 45 Page 47

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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