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Removal Of Oil Separator For Inspection Or Re-
placement:
Air/oil under pressure will cause
severe personal injury or death. Shut
down compressor, relieve system of
all pressure, disconnect, tag and
lockout power supply to the starter
before removing valves, caps, plugs,
fittings, bolts, and filters.
1.
Be certain unit is completely off and that no air
pressure is in the oil reservoir.
2.
Disconnect, tag and lockout power supply to the
starter.
3.
Remove screws holding the top plate to the sepa-
rator housing. Lift the top plate from the separator
housing.
4.
Lift the separator from the separator housing.
5.
Inspect and/or replace the separator as neces-
sary. Be sure the o–ring is not damaged. Before
installing (or reinstalling) any separator apply
grease to the o–ring. Oil will be wiped off by the
chamfer and the o–ring could be damaged.
6.
Remove any gasket material adhering to top plate
or separator housing, and install new gasket.
7.
Lower the separator into the housing and center
the separator on the chamfer. Press separator
down into the housing. Do not use excessive
force as separator damage can occur.
8.
Place the spacer on the indent in the separator.
Seat the top plate to the separator, spacer and
separator housing. Install and tighten all cap
screws.
9.
Run the unit and check for leaks.
COMPRESSOR OIL SYSTEM CHECK – The follow-
ing readings are based on ambient temperature of 80
_
F (27
_
C) for air–cooled oil cooler and 80
_
F inlet water
on water–cooled oil cooler, with the system in good
condition. Compressor should be at operating temper-
ature at the time of checks. One–half hour of loaded op-
eration is usually sufficient to reach level–out operating
temperatures.
Air and Oil Discharge Temperature – 165
_
to 195
_
F (74
_
to 91
_
C) – Read at gauge on the instrument
panel or check with a thermometer at the discharge
housing.
Compressor Oil Inlet Temperature – 150
_
to 160
_
F
(66
_
to 71
_
C) – Install a tee at the oil filter outlet and
check with a thermometer.
Oil Inlet Pressure – Check at the fitting in the line near
the compressor oil inlet. With air receiver pressure at
100 psi (6.9 Bar), oil inlet pressure should be 55–60
psig(3.8–4.1 Bar).
Oil Cooler Oil Pressure Differential (Air–Cooled
Radiator) – Check differential across oil system by
measuring oil inlet pressure as described above.
Oil Cooler Oil Pressure Differential (Water–Cooled
Heat Exchanger) – 2 to 25 PSID (.1 to 1.7 Bar) (65 to
150 PSIG, 4.5 to 10.3 Bars Receiver Pressure) –
Check that oil inlet pressure is correct or measure the
differential between drains on the oil cooler shell.
Oil Cooler Temperature Differential (Air–Cooled
Radiator) – The oil temperature differential depends
on the temperature of the air at the oil cooler fan and
cleanliness of core faces. As ambient temperatures
and core restrictions increase, the oil cooler outlet tem-
perature will increase. The oil inlet temperature is
approximately the same as air discharge temperature
– see the gauge on the instrument panel. The outlet oil
temperature may be checked by installing a tee at the
oil filter outlet.
Oil Cooler Temperature Differential (Water–Cooled
Heat Exchanger) – The oil temperature differential de-
pends on the inlet water temperature and the water flow
rate permitted by the water flow control valve setting.
The oil inlet temperature is approximately the same as
the air discharge temperature – see the gauge on the
instrument panel. The oil outlet temperature may be
checked by installing a tee at the oil filter outlet.
Oil Cooler Water Pressure Differential (Water–
Cooled Heat Exchanger) – The water pressure differ-
ential through the heat exchanger will depend on the
supply pressure, flow rate, cooler tube cleanliness and
outlet pressure. The inlet and outlet water pressure
may be checked at the pipe fittings supplied by the cus-
tomer.
