Vulcan-Hart C24EA Series Service Manual page 43

C24EA SERIES ELECTRIC CONVECTION STEAMERS - CONTROL BOARD
Timers Reach Zero (Upper and lower Compartments)
• Buzzer sounds until timer turned to off, constant or additional time is set.
• Cook lights (2LT) (red) turn off and cooking compartment steam solenoids de-energize.
• Heat exchanger heating elements de-energize.
• LED 3 and 4 will cycle as described under Timers Set (Upper and lower Compartments).
STATUS
LED
ON OFF
1 X Same as starting conditions
2 X Same as Water Level at LLCO Probe.
5 X Same as Steam generator at Operating Pressure.
6 X Upper cavity relay (K8) de-energized.
7 X Lower cavity relay (K9) energized.
Cavity condensate solenoid (2SOL) de-energized.
8 X
Heat exchanger relay (K10) de-energized.
All other LED's are off.
Power Switch (1S) off
• Power light (3LT) (amber) and ready light (1LT) (green) off.
• Drain valve energized (steam generator begins draining).
• Condensate thermostat closes (1TAS) and drain cooling solenoid energized (1SOL).
• HL LED off until water drops below L (low level) probe then turns on (water level control).
• LLCO led lit until water level drops below LLCO probe (water level control). Fast fill/flush solenoid energized.
• LED 2 remains lit until water level drops below LLCO probe then turns off. Limiting contactor (1CON)
deenergized.
• LED 10 remains lit during 3 minute drain cycle then turns off.
STATUS
LED
ON OFF
1 X
5 X
9 X
12 X
13 X
COMPONENT
COMPONENT
Same as starting conditions
Relay (K1) de-energized.
Drain time delay relay (TDR)
energized.
Vacuum relief solenoid (2SOL)
energized.
Delime 1 time delay relay powered.
Page 43 of 75
DESCRIPTION
Upper compartment timer set.
Lower compartment timer set.
Cavity drain water cooling stops.
Power removed from heat exchanger
element (1).
DESCRIPTION
Pressure switch closed (1PAS). Power removed
from cooking compartment controls.
Steamer turned off and 3 minute drain cycle
started. Drain transformer (2T) powered. Drain
valve energized and opens.
Pressure switch closed (2PAS). Allows venting of
steam generator during draining.
Output from delime 1 (TDR) load terminal is not
active (delime 1 circuit not powered) until input
voltage trigger is received during the delime cycle.
F35453 Rev. A (0119)