Service manual

VSX SERIES STEAMER - ELECTRICAL OPERATION
Page 33 of 40
COOK CYCLE
1. Cook cycle can not start until the initial fill and
preheat is completed and the door is closed.
A. 2K-1 (NC/C) contacts are open during
preheat and will prevent operation of the
timer, buzzer, 2SOL and 2LT.
2. Ready light lit.
A. Product is inserted into steamer.
B. Door is closed.
C. Time is dialed on the timer.
3. Contacts 1/3 of timer close.
A. Ignition module is energized by the closing
of 1TR 1/3 contacts and thru 2K-2 NC/C
contacts. The ignition trial cycle begins,
burners come on.
NOTE:
Ignition module power is not controlled
by 2TAS during a cook cycle therefore the
burners will stay on continuously during
cooking.
B. Ready light goes out.
C. Cook light lights.
D. 2SOL energized and water flows to drain to
condense steam.
E. Timer motor energized.
F. Delime timer board starts monitoring
cooking hours.
4. Time expires on timer.
A. Timer contacts 1/3 open, 2LT de-energized.
B. Timer contacts 4/1 close and energize
buzzer until manually turned "off".
C. Timer motor de-energized.
D. 2SOL de-energized and water is shut off
from drain.
E. Ignition Module de-energized and is
controlled by 2TAS.
F. Delime timer board stops monitoring
cooking hours.
5. Steamer reverts to preheat cycle until time is
dialed into timer and the door is shut, water
level drops below low level cut-off probe or the
power switch is turned "off".
WATER REFILL (AFTER INITIAL FILL)
NOTE:
This water refill cycle will not affect
operation of either the preheat or cook cycle due to
1K being energized and locked during the initial fill.
1. Water level drops below low level probe (LL).
A. WLC internal coil HL de-energized.
1) WLC contacts HL-3 open.
2) WLC contacts HL-2 close.
2. 1SOL energized, water flows.
3. Water reaches LL (Low Level) probe.
A. Power to pin 2 of water level control.
4. Water reaches high level probe.
A. Internal coil HL of water level control is
energized.
1) WLC HL-2 opens.
2) WLC HL-3 closes.
3) WLC HL-1 close.
5. 1SOL de-energized.
6. The water refill cycle will occur whenever the
water level is below the low level probe.
DELIME CYCLE
1. Steamer is in a cook cycle where the delime
board monitors the cook time.
2. Delime light comes on.
A. Cook cycle ends and product removed.
3. Power switch turned to delime position.
4. 3K energized.
A. Contacts 3K-1 NO close.
B. 1M energized and drain closes.
C. Delime board transformer energized.
D. Contacts 3K-1 NC open.
E. Contacts 3K-2 NO close.
1) Delime time is reset to “0".
5. Turn steamer off and perform delime procedure.