Steamer Operation - Vulcan-Hart VL Series Service Manual

VL BOILER BASE SERIES CONVECTION STEAMERS - GENERAL
TOTAL
MODEL
KW
48
*Standard

STEAMER OPERATION

Ensure that all utility connections to the steamer have
been made and are turned on.
On models that are CSD-1 equipped, amber colored
lights for high pressure and low water level will
illuminate and stay on until the boiler is full and the
manual reset switch pressed.
Gas Powered Steam Boiler
Open the cabinet door and turn main power switch
ON. The red light will illuminate, water will begin filling
the boiler and the blowdown solenoid valve will close.
The boiler should fill in four to eleven minutes.
Observe water level gauge glass to verify that water
is in boiler and that the level in the gauge glass is about
half full. Both valves on gauge glass assembly must
be open to fill the gauge. Older models equipped with
a manual "ball" type blowdown valve must be closed
for the boiler to fill. The cycling pressure switch will
maintain the proper steam pressure in the boiler by
cycling the heating system on and off to generate
steam pressure.
1. On Models with Manual Ignition - The knob on the
gas combination control valve has three
positions (On-Pilot-Off) for control of main
burners and pilot. Turn knob on gas combination
valve to PILOT then depress and light pilot burner
with a lit taper. Maintain knob in depressed
position for about 30 seconds and release.
Observe that pilot burner flame stays on. If the
flame should go out, wait 5 minutes before
relighting. Turn knob on gas combination control
valve to ON. If the water level in the boiler has
reached the minimum level, burners will ignite
and begin to heat the water in the boiler. After
approximately 15 minutes, steam should be
present for cooking product. Observe that the
boiler pressure gauge indicates steam pressure
of 9-11 psi for models with a pressure regulating
valve or 4-6 psi for models without the valve.
F24650 Rev. A (1017)
1 PHASE
208V 240V 208V
Page 8 of 93
AMPERAGE
3 PHASE
240V 480V
116 58
2. On Models with Automatic Ignition - The knob on
the gas combination control valve has two
positions (On-Off) for control of main burners and
pilot. For the automatic ignition system to work,
the knob must be set in the ON position or gas
for the pilot and main burners will not flow. Also,
the ignition control module ON/OFF/RESET
switch must be in the ON position to operate. This
switch is located on the upper left side of the
electrical control box for the ignition control
module. A red light will illuminate when the switch
is in the ON position. DO NOT ATTEMPT TO
MANUALLY LIGHT THE PILOT IN AN
AUTOMATIC TYPE IGNITION SYSTEM.
After the main power switch is turned ON and the
ignition control modules RESET switch is in the
ON position, sparking will begin three seconds
later to light the standing pilot. If the pilot lights, a
signal is sent back through the ignition cable
indicating the presence of pilot flame and
sparking stops. If the water level in the boiler has
reached the minimum level, the burners will ignite
and begin to heat the water in the boiler. After
approximately 15 minutes, steam should be
present for cooking product. Observe that the
boiler pressure gauge indicates a steam
pressure of 9-11 psi for models with a pressure
regulating valve or 4-6 psi for models without the
valve. If a pilot flame is not established
immediately, sparking will continue for 90
seconds. After that duration, the ignition control
module will lock out, and will need to be reset to
start the pilot and burner lighting cycle again.
Electrically Powered Steam Boiler
Open the cabinet door and turn main power switch
ON. The red light will illuminate, water will begin filling
the boiler and the blowdown solenoid valve will close.
The boiler should fill in approximately 11 minutes.
Observe water level gauge glass to verify that water
is in boiler and that the level in the gauge glass is about
half full. Both valves on gauge glass assembly must
be open to fill the gauge. Older models equipped with
a manual "ball" type blowdown valve must be closed
for the boiler to fill. If the water level in the boiler has
reached the minimum level, the heater contactors will
close, the heaters will energize and begin to heat the
3 PHASE - 4 WIRE
220/380V & 240/415V
67