VHX SERIES STEAMERS - COMPONENT FUNCT I ON
F24700 (October 2001) Page 12 of 68
COOKING COMPARTMENT CONTROLS
The upper section of the steamer consists of t wo separate cooking compartments. Each compar t ment functions
independently with its own set of controls. P ower i s suppli ed to the controls only after the steam pressure rises
above the compartment pressure switch sett i ng to close the N.O. contacts.
Ready Light (Green) ............ When lit, indicates steamer is ready to cook.
Cooking Light (Red) ............ When lit, indicates steamer is in a cooking cycle.
Cooking Timer ................. Use to set desired cooking cycle time between 0-60 minutes. When a
timer is set, the steam supply solenoi d valve is energized to al low steam
into the cooking compartment but only after the boiler has reached i ts
operating pressure. Also, energizes the buzzer when tim e ex pires.
Buzzer ....................... Signals end of a cook cycle, must be turned off manually.
Door Switch ................... Removes electrical power to the timer. If time is dialed on the cooking
timer and compartments are steam ing, removes power to the steam
solenoid valve when the com par t ment door is opened.
Steam Solenoid Valve ........... When energized, opens to allow steam into the cooking compartment
(normally closed val v e).
Compartment Pressure Switch .... Supplies power to the controls only after the steam pressure rises above
approximately 3 psi to cl ose the c ompartment pressure switch. The
switch remains closed as long as steam pressure stays above this
pressure.
Manifold Pressure Gauge ........ Indicates the amount of steam pressure in manifold. T he i ntake shut-off
valve should be adjusted so mani fold pressure remains at 9 psi with both
compartments on.
Steam Supply Manifold .......... Main steam supply line from the boiler for each cooking compar t ment.
Supplies steam up to the steam solenoid v alve.
Intake Shut-Off Valve ........... Main steam supply shut- of f from the boil er to the steam supply manifol d.
This valve should NOT be l eft fully OPEN t o boiler steam supply. See
“INTAKE SHUT-OFF VALVE ADJUSTMENT (STEAM FLOW)" in
“SERVICE PROCEDURES AND ADJUSTMENTS".