Vulcan-Hart C24EA Series Service Manual page 45

C24EA SERIES ELECTRIC CONVECTION STEAMERS - CONTROL BOARD
STATUS
LED
ON OFF
15 X
17 X
All other LED's are off.
Water Level at LLCO Probe
• LLCO LED is on (water level control) (LED is on until water drops below LLCO probe).
• All contactors energized (steam generator begins heating).
• Water fill of the steam generator changes to slow fill rate.
STATUS
LED
ON OFF
1 X
2 X
3 X
4 X
12 X
13 X
14 X
15 X
COMPONENT
Delime Relay (K2) energized.
Delime Relay (K7) energized.
COMPONENT
Same as starting conditions
Limiting contactor (1CON)
energized.
Regulating contactor 1 (2CON)
energized.
Regulating contactor 2 (3CON)
energized.
Same as Starting Conditions
Same as Delime Switch On
Same as Delime Switch On
Same as Delime Switch On
K2-6/4 contacts close (powers delime light)
K2-5/1 contacts open.
Power to cooking compartment controls is locked out
(no power to timers or lights). Power to delime 1 (TDR)
input trigger and delime 1 (TDR) is energized. 120VAC
output from load terminal remains on for 3 additional
minutes after power is removed from input trigger to
allow heat exchanger to drain (delime valve energized).
Total time 63 minutes unless canceled (delime 2 TDR
default time of 60 minutes plus delime 1 TDR of 3
minutes).
Delime transformer (3T) powered. Delime valve
energized and opens.
Delime valve end switch contacts close.
K7 powered from delime 1 (TDR) output from load
terminal.
K7-5/1 N.C contacts open. X1 potential removed from
power switch (1S).
K7-5/3 N.O. contacts close. Allows delime 1 (TDR) to
remain powered to hold K7 energized for a delay on
drop out (120VAC output from load terminal remains
on) after K4-6/2 N.C. contacts open.
Water level is satisfied (LLCO probe).
Limiting contactor (1CON) will remain energized with
the water level satisfied.
Pressure switch (1PAS) closed; Heating elements
powered.
Pressure switch (1PAS) closed; Heating elements
powered.
Page 45 of 75
DESCRIPTION
DESCRIPTION
F35453 Rev. A (0119)