Vulcan-Hart C24EA3 480V PRO MODEL C24EA - ELECTRICAL OPERATION, D.HL LED on WLC board turns off

MODEL C24EA - ELECTRICAL OPERATION

A.No action as internal latching relay (ILR-1) contacts are open.

8.Water level reaches high level(H) probe.

A.Internal latching relay (ILR) coil on WLC board energizes.

B.High level (HL) coil de-energized by ILR-2 contacts opening.

C.Slow Fill Solenoid de-energized by opening of HL contacts on WLC board.

D.HL LED on WLC board turns off.

9.Timer knob set to CONSTANT for continuous steam operation or Timer knob is turned to a timed setting.

A.Power (120VAC) present to Door Switch wire #19.

B.If Timer is set to a timed setting, Timer motor is energized through closure of N.O. contacts K1-6/4. Count down time begins.

10.Steamer door is closed.

A.Door Switch (2S) contacts close. Cook light (2LT - Red) illuminates.

B.Regulating contactor remains energized as long as door is closed and Timer is set to CONSTANT or time remains on timed cycle.

11.Temperature of condensate exiting cooking cavity increases to above 135EF.

A.Condensate thermostat closes energizing cooling solenoid 1SOL. Condensate is cooled in drain box before entering facility drain system.

12.Door opened during timed cook cycle.

A.Timer continues count down until time equals zero even if steamer door is opened.

B.Regulating contactor de-energizes and cook light turns off.

13.Time reaches zero.

A.Buzzer is energized through N.O. contacts K1-6/4 and Timer - 11/14.

1)Buzzer remains energized until timer knob is turned to OFF, new time or CONSTANT is selected or steamer is turned off.

14.Power Switch (1S) pushed to off.

A.Power (3LT), Cook (2LT) and Ready (1LT) lights turn off.

B.Time delay relay is energized through terminals 2 & 3. Output (120VAC) on terminal 1 for 90 seconds.

C.Time delay relay output energizes K3 coil.

1)X1 potential to L1 of WLC board through N.O. contacts K3-3/5.

2)Relay K2 coil energized through WLC N.O. contacts LLCO and N.O. contacts K3-6/4.

3)Heating element and timer control circuits are disabled by opening of N.C. contacts K3-6/2.

D.Power (120VAC) across primary of drain transformer. Motorized drain valve energized. Drain valve opens and tank begins to drain.

1)Drain valve N.O. contacts close.

15.Condensate Thermostat reaches 135EF, contacts close. Drain water temperature is regulated through condensate thermostat.

A.Cooling Solenoid (1SOL) energized through closure of Condensate Thermostat contacts.

B.Flush Solenoid (2SOL) energized through closure of N.O. contacts K2-3/5 and drain valve N.O. contacts.

16.Tank water level drops below L probe.

A.Internal latching relay (ILR) de-energizes.

1)High level coil (HL) energized on WLC board. HL LED on WLC board lights.

17.Tank water level drops below LLCO probe.

A.Relay K2 de-energized through opening of WLC board LLCO N.O. contacts.

B.Vacuum Relief Solenoid energized through N.C. contacts K2-2/6.

C.Fast Fill Solenoid energized through WLC (LLCO) N.C. contacts and N.C. contacts K2-5/1.

D.Flush Solenoid (2SOL) remains energized through WLC (LLCO) N.C. contacts.

18.Time Delay Relay time elapses.

A.Power (120VAC) removed from output of Time Delay Relay terminal 1.

1)All Solenoids, coils and WLC board are de-energized.

2)Motorized drain valve de-energized. Drain valve closes.

F25213 (May 2006) Page 44 of 52