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Ice Frost Operator’s Manual
Publication Number: M620919596OPR - 20 - © 2004-2006, IMI Cornelius Inc.
NOTE 1: the same intervention methods are applied when the safety probe
is uncovered after the solenoid valve has been activated.
NOTE 2: the 3-second software filter activated when it detects the safety probe is uncovered and the
relevant signal have been introduced to prevent the probe recognizing the “tank-bowl” conduit as “empty”
when there is residual gas in it.
Summing Up:
• When one of the two safety probes fails to detect the passage (presence) of liquid during the fill, the
system will stop (3-second software filter) the fill cycle in progress, while the buzzer on the machine
emits an intermittent warning signal lasting 6 seconds.
• If the safety probes is uncovered when there is no loading phase in progress (is de-energized), no
alarm signal is emitted.
This signal is activated as soon as the system starts to load the bowl.
If: Bowl fill solenoid = ON and Safety probe input = Covered bowl filled as usual
If: Bowl fill solenoid = ON and Safety probe input = Uncovered after 3 seconds - Bowl fill
solenoid = OFF and buzzer is activated
ATTENTION: After the no liquid alarm signal has been activated (safety probe inlet uncovered),
the actuators for the bowl whose safety probe is uncovered cannot be re-activated. Full
functioning conditions can only be restored by switching the machine OFF then ON again and re-
starting from the 1st filling phase. When the second safety probe is also identified as uncovered,
all the charges relating to the system are inhibited (with the exception of CO
2
gas management
valve) and the buzzer emits an intermittent sound for approximately 20 seconds. Full functioning
conditions can only be restored by switching ON and OFF the machine starting from the 1st filling
phase.
The CO
2
gas management valve solenoid valve is independent of the alarm signal and continues
its
CO
2
gas pressure reading function only (see relevant paragraph).