Oil Cycle - Hussmann Proto-Aire Installation Manual

Oil Cycle

Discharge refrigerant carries droplets of oil from the compressor's outlet. The Turba-Shed
separates the oil from the refrigerant. The oil is stored in the Turba-shed until needed. The
oil returns to the system through the high-pressure line and oil filter.
The oil filter removes impurities from the oil. The high-pressure oil is distributed to the
electronic oil level control, which feeds oil into the compressor through a solenoid valve.
Electronic oil regulators monitor oil levels. The units are powered by a 24V power supply.
When the oil level in the compressor drops below ½ sightglass, the fill light comes on, and
the oil solenoid is energized. If after 90 seconds the oil level does not rise above ½
sightglass, the unit opens the compressor control circuit. If oil becomes available, the
electronic oil level control will automatically re-set and the compressor will resume
operation.
Oil
Regulator
Discharge Header
Oil Header
Suction Header
45
Protocol™ Installation and
Service Manual
Turba-Shed
Oil Separator
Oil
Filter