VL SERIES STEAMERS - GENERAL
Pa
e 13 of 88
COOKING COMPARTMENT CONTROLS
The top half of the steamer consists of two to three separate cookin
compartments dependin
on the model.
Each compartment functions independently with its own set of controls. Power is supplied to the controls throu
h
the compartment power switch and the cookin
timer control micro switch contacts. Prevent and Automatic
models have a load compensatin
thermal switch that prevents the controls from receivin
power until the
compartment reaches 180°F to close the switch.
Compartment Power Switch......
Supplies power to the cookin
compartment controls.
Cooking Light (Red) ............
When lit, indicates steamer is in a cookin
cycle. (All models except
manual)
Cooking Timer .................
Use to set desired cookin
cycle time between 0-60 minutes. Ener
izes
the buzzer when time expires (All models except manual). On Prevent
models, also de-ener
izes the steam exhaust solenoid valve one minute
before the end of a cook cycle to allow compartment ventin
.
Buzzer .......................
Si
nals end of a cook cycle, must be turned off manually. (All models
except manual)
Steam Exhaust Solenoid Valve . . .
A normally open valve that allows full compartment ventin
of air and
condensate up to 180°F durin
compartment heat up and “limited free
ventin
” after ener
ized by the closin
of the thermal switch. The valve
remains closed to allow compartment pressurization to 6 psi until one
minute before the end of a cook cycle at which point the timer control
micro switch contacts (SW2) chan
e state and de-ener
ize the valve to
vent the compartment of pressure and steam. (prevent models)
Steam Header Inlet (manifold) ....
Main steam supply line from the boiler for each cookin
compartment.
Supplies steam to the manual steam
ate valves.
Compartment Pressure Gauge ....
Indicates the amount of steam pressure in cookin
compartments.
Steam Control Arm Solenoid .....
When ener
ized, en
a
es the lift arm (plun
er) to raise the steam
control arm off of the catch, allowin
it to return to its rear position. This
closes the steam inlet
ate valve and opens the steam exhaust
ate
valve. (prevent, automatic and standard models)
Thermal Switch
(Load Compensator) ............
Controls power to the preheat cycle components. Turns the cookin
li
ht
on, ener
izes the steam exhaust solenoid valve and ener
izes the
cookin
timer motor to start timin
, after the compartment reaches
180 F. (prevent and automatic models)
Steam Gate Valves .............
Manual valves actuated by the steam control arm. Allows steam to flow
into the cookin
compartment throu
h the inlet steam
ate valve when
the arm is in a forward position and exhaust the steam throu
h the
exhaust steam
ate valve when the arm is at the rear. Prevent models
use a steam exhaust solenoid valve to exhaust the steam and a sin
le
steam
ate valve as the steam inlet. The automatic, standard and
manual models use one steam
ate valve to exhaust the steam and
one additional steam
ate valve as the steam inlet.
Steam Trap (Condenser) .........
Exhausts air and condensate from compartment durin
preheat until the
compartment temperature reaches approximately 180 F. The bellows
then close, stoppin
the exhaust. (all models except prevent)
