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MODEL C24EA - CONTROL BOARD
F35453 (July 2008) Page 38 of 68
DELIMING CYCLE STATUS
(LED INDICATORS)
• Conditions same as listed under STARTING CONDITIONS.
• Delime time delay relay 2 (TDR) and drain time delay relay (TDR) jumpers on the control board are set at their
default times as shown on the schematic.
• Delime valve closed.
• Delime solution added to steam generator.
NOTE: Heat exchanger elements are not energized during delime cycle.
Delime Switch On
• Delime switch pressed to DELIME position (momentary on - hold 2 sec).
• Power light (3LT) (amber) on.
• Delime light (4LT) (red) on.
• HL Led is on. Water level control powered.
• Water fills steam generator at fast fill rate.
LED
STATUS
COMPONENT DESCRIPTION
ON OFF
1 X Same as starting conditions
12 X Same as starting conditions
13 X Power to delime 1 (TDR)
Relay timed out, no output to delime circuit. LED
remains lit as in Turning Steamer Off.
14 X Delime Relay (K4) energized. Delime 2 (TDR) powered thru K4-6/4 closed contacts
(N.O.). 120VAC output from delime 2 (TDR) load
terminal for 60 minutes.
Power to heating circuit, power light (3LT) and WLC
thru K4-5/3 closed contacts (N.O.).
15 X Delime Relay (K2) energized. 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.
17 X Delime Relay (K7) energized. 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.
All other LED's are off.