Electrical Component Details - Scotsman Prodigy C0322 Technical & Service Manual

Electrical Component Details

Compressor
• Operated by the compressor contactor. Single phase self contained models have PTCR and run capacitor.
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 Pump
• Operated by the controller. When energized, the Water Pump indicator light will be ON. 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(s)
• Operated by the controller and the fan pressure control. Can cycle on and off in the freeze cycle, always
off during harvest. When the controller has energized it, the indicator light will be ON but the fan will not turn
unless the discharge pressure is high enough to close the high pressure control.
• Fan(s) may shut off near the end of the freeze cycle to build up heat for harvest. Time of shut off depends
upon available heat, as measured by the discharge temperature.
High pressure cut out
• Some air cooled and all remote and all water cooled models have 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 Assist Solenoid or Motor(s)
• Operated by the controller 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.
January 2015 Page 24