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VL SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS
STEAM GATE VALVE(S)
On all models, each cooking compartment has its
own mechanical steam gate valve that supplies
steam to the cooking compartment when the steam
control arm handle is pulled forward. The Prevent
models use a solenoid valve to exhaust steam from
the compartment whereas the Automatic, Standard
and Manual models use an additional steam gate
valve to exhaust steam when the steam control arm
handle is returned to the rear. These gate valves are
a standard type and can be disassembled for
cleaning and gasket replacement.
If steam leaks are noticed around the packing nut
and stem during cooking, tighten the packing nut
until the steam leak ceases. Release steam control
arm to ensure its automatic return. If arm does not
return freely or steam is still leaking, then further
inspection or adjustments are necessary. Turn the
timer and compartment power switch OFF and
blowdown the boiler. Remove the control arm
bracket and packing nut from the stem and clean
out the old string packing. The valve stems may
then be re-packed using a string packing suitable for
steam service.
Replace the packing nut and control arm bracket.
Tighten the packing nut finger tight plus ½ turn and
check for proper operation. If steam continues to
leak, tighten the packing nut in additional ½ turn
increments until it stops and re-check operation of
the steam control arm.
NOTE: Do not over tighten packing glands, the
linkage system must be free enough for the spring
to return the steam control arm to the fully closed
position.
For other service to these valves, remove the stem
assembly and cap at the top of the valve. Check the
valve linkage for loose or binding parts.
The steam gate valve linkage for these controls are
simple and there function easily seen. The inlet and
exhaust steam gate valves must be positioned so
the inlet valve is open and the exhaust valve closed
when the steam control arm handle is pulled forward
and reverses when the control arm is released.
NOTE: In the event of an electrical component or a
power failure, the steam control arm can be
operated manually on automatic models.
Page 37 of 88
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