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4.
Prevent
A.
Set the timer to the desired cooking time.
The timer must be set past five minutes to
change the state of the timer control
micro switch contacts.
B.
Pull the steam control arm handle forward
and lock it by pulling the handle down.
This opens the steam inlet gate valve,
allowing steam to enter the compartment.
C.
Press the compartment power switch to
supply power to the compartment controls.
The prevent compartment controls feature
load compensated cook times by utilizing
a thermal switch. With this feature, when
the compartment temperature reaches
180°F (the temperature at which
preheating or defrosting is complete) the
red light will come on and the timer will
start. For a small food load, the delay time
before the timer starts might be a minute
or less. For a large food load, the delay
time could be four and five minutes.
During preheat, the steam exhaust
solenoid valve (N.O.) is open to allow the
full free venting of cooler air and
condensate from the compartment. When
the temperature reaches 180°F, the
exhaust solenoid valve is energized and
closes. The compartment should then
pressurize to 6 psi.
VL SERIES STEAMERS - GENERAL
Page 10 of 88
D.
Approximately one minute before timer
reaches zero the steam control solenoid is
energized to unlatch the steam control
arm. An internal spring will automatically
pull the arm to the rear. This closes the
steam inlet gate valve and opens the
steam exhaust gate valve, allowing steam
and pressure to exit the compartment.
When the timer reaches "0" the red light
shuts off and a buzzer sounds indicating
the end of the cook cycle. Turn the
compartment power switch OFF to silence
the buzzer and remove power from the
compartment controls.
E.
Turn the screw handle on the
compartment door counterclockwise until
the gasket no longer seals against the
compartment surface. After the remaining
steam escapes, move the latch paddle to
the left and open the door.
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