U-Line U-29RB-13A User Manual & Service Manual page 45

USER GUIDE
FROST FREE REFRIGERATION
Cooling Mode
Bypass solenoid closed.
Evaporator fan operating.
Refrigerant flows through capillary tubes.
Normal vapor/compression cycle refrigeration.
CONDENSER
DRYER
Troubleshooting - Extended
Defrost Mode
Bypass solenoid valve open.
Refrigerant flows through bypass system.
Vapor flows from condenser to evaporator without a phase
change.
Drain heater on (U-CO29F only).
COMPRESSOR
FLOW WHEN SOLENOID
VALVE IS CLOSED
CAPILLARY TUBE
SOLENOID VALVE
45
EVAPORATOR
FLOW WHEN SOLENOID
VALVE IS OPEN