Hussmann Super Plus - Oil System; Oil Pressure Differential Valve

OIL SYSTEM
Differential Pressure Regulating Valve
The oil pressure differential valve reduces oil
pressure from high side pressure to a range of
3 to 20 psig above the suction pressure.
Typically, the valve would be set between 10
and 15 psig above the suction pressure to pre-
vent over feeding of the oil level regulator. A
separate Oil Pressure Differential Regulating
Valve must be applied for each different suc-
tion pressure on one oil system.
Turning the adjustment stem clockwise
1
⁄4 turn
will increase the pressure to the oil level regu-
lators about 1 psig.
1
⁄4 turn clockwise = 1 psig increase.
Oil Level Regulators
For any brand of oil level regulator to work
accurately the unit and each compressor must
be level. Both Sporlan and AC & R regulators
may be damaged by over adjusting. Do not
exceed 175 psig when testing to prevent dam-
age to the floats. A sight glass filled with oil
may indicate a damaged regulator.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
CONTROL VALVES Revised August 1, 1996
7 - 20