Vulcan-Hart C24EA Series Service Manual page 47

C24EA SERIES ELECTRIC CONVECTION STEAMERS - CONTROL BOARD
STATUS
LED
ON OFF
Regulating contactor 2 (3CON)
4 X
deenergized.
5 X Relay (K1) energized.
13 X Same as Delime Switch On
14 X Same as Delime Switch On
15 X Same as Delime Switch On
17 X Same as Delime Switch On
All other LED's are off.
Steam Generator Maintains Operating Pressure
• Heat cycles as necessary to maintain steam generator pressure during the delime cycle.
• LED 3 will cycle on/off with Regulating Contactor 1 (2CON).
• LED's 1, 2, 5, 13, 14, 15 & 17 remain on.
• Water level maintained by water level control circuit. HL LED (water level control) will cycle on/off.
Delime Time Reaches Zero
• Delime light (4LT) (red) on until time expires on Delime 2 (TDR).
• Delime cycle heating ends. Limiting contactor (1CON) and regulating contactor 1 (2CON) de-energized.
• Drain cycle starts (drain TDR energized). Drain valve energized to allow steam generator to drain. Delime
valve energized to allow heat exchanger to drain.
• 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 on 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 Same as starting conditions
Regulating contactor 1 (2CON)
3 X
deenergized.
5 X Relay (K1) de-energized.
Drain (TDR) energized thru K4-6/2
9 X
contacts.
Drain relay (K5) is energized thru
11 X delime valve end switch closed
contacts (N.O.).
COMPONENT
COMPONENT
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DESCRIPTION
Power removed from heating elements.
Contactor will remain off for the rest of delime cycle.
Pressure switch opens (1PAS). With Delime Relay (K2)
energized (LED 15 on), K2-5/1 contacts are open to lock
out power to the cooking compartment controls.
DESCRIPTION
Power removed from heating elements.
Pressure switch (1PAS) contacts close.
120VAC output from drain (TDR) load terminal.
Drain circuit energized.
K5-6/4 contacts close and delime light (4LT) is lit.
K5-5/3 latching circuit close contacts allow LED 11
to light.
F35453 Rev. A (0119)