C2648 Prodigy and Prodigy Plus Service Manual
January 2015
Page 30
Electrical Component Details
Compressor
• Operated by the compressor contactor.
Contactor
• Operated by the controller and the high pressure cut out switch. Line voltage coil. When energized the
Compressor indicator light will be ON.
Water Pumps
• Operated by the controller, one of them thru a NC relay. When the Pump light is ON during a Freeze cycle,
both pumps should be operating. When the Pump and Purge lights are both ON, one pump will be ON and
one will be OFF.
Inlet Water Solenoid Valve
• Operated by the controller. Line voltage coil. When energized, the Water Solenoid indicator light will be ON.
Purge Valve
• Operated by the controller. Line voltage coil. When energized, the Purge Valve indicator light will be ON.
Energized for a time during harvest.
Fan Motor
• Remote condenser fan motor is on whenever the compressor is.
High pressure cut out
• There is a high pressure cut out switch that shuts the power off to the compressor contactor if the
discharge pressure is too high. It is an automatic reset.
Harvest Assists - Originally solenoids later units have motors
• Operated by the controller through a relay. In parallel with the hot gas valve. Cycles on and off at the
beginning of a restart. Energized throughout the harvest cycle. Line voltage coil.
Liquid Line Valve
• Opened by the controller to start a freeze cycle. Closed to shut unit off. Line voltage coil.
Hot Gas Valves
• Operated by the controller through a relay. In parallel with the harvest assist. Cycles on and off at the
beginning of a restart. Energized throughout the harvest cycle. Line voltage coil.
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