OIL CYCLE
Discharge refrigerant carries droplets of oil from
the compressors’ lubrication system. The
Turbashed separates the oil from the refrigerant
and stores it in its internal reservoir until needed.
The oil returns to the compressors along the high
pressure line through an oil filter.
The oil filter removes impurities from the oil. The
high pressure oil then enters an oil manifold
where it is distributed to individual compressor oil
feed lines.
Note: the oil manifold has a shutoff
valve incorporated that shuts off oil flow in
both the full clockwise and counterclockwise
positions. Proper adjustment to this shutoff
valve is the center position.
The high pressure oil is then distributed to indi-
vidual Traxoil regulators which inject oil through
a solenoid into the compressor.
The Sporlan Traxoil is an electronic oil level
regulator. The unit is powered by a 24V power
supply. When the oil level drops below 1/2 sight-
glass, the oil fill light comes on and the oil
solenoid is energized. If the oil level doesn't rise
above 1/2 sightglass after 120 seconds, the
Traxoil relay contacts open the compressor con-
trol
circuit. It is possible that oil will refill the
compressor crankcase after an Oil Level Failure,
causing the oil fill and oil failure lights to turn off,
but the compressor alarm light remains on and the
compressor switch requires a manual reset.
Note: Scroll compressors do not have a positive
displacement oil pump, and therefore no oil
pressure control.
CONTROL VALVES
September 1, 1997
6 - 16
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
Turba-
Shed
b
Oil
Filter
c
Traxoil
Compressors
a
High End
Satellite
Low End
Satellite
Scroll Plus
™
Oil Return System
Standard Valves
Compressor Service Valves
a
b Oil Supply Shutoff Valve
c Oil Filter Isolation Valve
d Trax-Oil Regulator
d
Oil Manifold
Figure 6-19 — Scroll Plus Oil Return System
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