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MODEL C24EA - SWITCHES, SOLENOIDS, RELAY, AND BUZZER
F35453 (July 2008) Page 28 of 68
Check
NOTE: Pressure can be checked with the small air
pocket that exists between the delime port cap and
water level probe housing in the delime hose. Make
certain that no leaks exist in the steam generator
connections or pressure gauge fittings.
1. Turn off machine to drain steam generator.
Allow steamer to complete drain cycle.
2. Remove FRONT BASE PANEL as outlined
under COVERS AND PANELS.
3. Remove cap from delime port and install
pressure gauge.
4. Close cooking compartment doors.
5. Mark one tooth of pressure switch adjustment
wheel to aid in identifying position of wheel.
Make a second mark on body of pressure
switch in alignment with mark on adjustment
wheel.
6. Turn on machine and allow to pressurize (ready
light on).
A. Set one cook timer for approximately 15
minutes.
B. Allow steamer to cycle three times for
steam production to stabilize.
NOTE: Operating pressures will vary slightly
between machine being serviced and gauge
used.
7. While observing pressure gauge, listen for
contactor to release indicating that pressure
switch contacts have opened. Correct range for
pressure switch cut-out is between 3.5 to 3.7
psi.
A. Listen for switch contacts to close
(contactor will energize).
B. Observe pressure gauge for three
complete cycles to find the average cut-out
pressure. Record pressure.
C. If pressure is outside tolerance (3.5 to 3.7
psi), adjustment is necessary. Refer to
Adjustment.
D. If cut-out pressure is within specifications,
turn power switch off. Allow time for
steamer to drain.
8. Remove test gauge and reinstall delime cap.
Adjustment
1. Allow steam production to stabilize as outlined
under Check.
NOTE: Make small incremental adjustments (1/8
turn of toothed adjustment wheel) when adjusting
cut-out pressure.
2. Referring to cut-out pressure recorded in Check
procedure, turn adjustment wheel to bring cut-
out pressure into tolerance.
A. From looking down on pressure switch:
1) Turn adjustment wheel CCW to
decrease cut-out pressure.
2) Turn adjustment wheel CW to
increase cut-out pressure.