Service Manual

Technicians Only: Freeze Cycle Sequence of Operation
This sequence begins with a restart after the unit
has shut off with the bin full. Ice has been
consumed, causing the ice sensors to become
un-blocked.
1. The controller (four minutes has to have passed
since the machine shut off on bin full for the
machine to restart)
2. The purge valve is opened and the pump
started.
3. After the purge valve closes the inlet water valve
opens and fills the reservoir.
Note: If the water reservoir does not fill within the
time period expected the controller will shut off and
switch on the water indicator light. It will re-try to fill
the reservoir in 20 minutes. If successful the freeze
cycle will continue.
4. The compressor and fan motor start and the
freezing process begins.
Note: The controller is connected to two external
relays in the EH, one for the CP's compressor
contactor and the other for the CP's solenoid
valves. A separate 24 volt transformer is in the CP
supplying power to the contacts of these two line
voltage relays through the interconnecting wire.
5. The controller will shut the water pump off for a
few seconds when the reservoir’s water
temperature reaches a pre-set point.
6. The freeze cycle continues until water makes
continuous contact with the ice thickness sensor.
That signals the controller to terminate the freeze
cycle and begin the harvest cycle. The Ready to
Harvest light will be ON.
.
Prodigy Eclipseä 1200, 1400, 1800, 2000
August 2008
Page 34