Electrical Component Details - Scotsman C0530SR-1 Technical 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(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.
September 2006 Page 32