OIL CYCLE
D i s c h a rge refrigerant carries droplets of oil
from the compressors' lubrication system. The
Turba-shed returns the oil from its reservoir
along the high pressure line to the Oil Pressure
D i ff e rential Regulator Va l v e . This valve
reduces the oil pressure to between 10 and 15
psig above the crankcase pressure, providing
even flow of oil to the Oil Level Regulators.
To balance oil level among the compressors An
Equalizing Line returns any excess oil in one
Oil Level Regulator to the rest of the system. A
Check Valve is placed in the Equalizing Line
between the Low End Satellite and the rest of
the system. The check valve is necessary to
keep the Low End Satellite from filling up with
oil. With a High End Satellite, note that the
Satellite has no Equalizing Line.
Note: Certain Carlyle compressors do not
require an oil equalizing line.
REFRIGERATION PROCESS Revised August 1, 1996
2 - 8
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
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