Gardner Denver AirSmart EAU99T Operating And Service Manual page 64

Removal of Oil Separator For Inspection Or Replacement:
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 separator 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 necessary. 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 following 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 temperature at the time of checks. One-half hour of
loaded operation is usually sufficient to reach level-out operating temperatures.
Air and Oil Discharge Temperature - 165° F to 195° F (74° C to 91° C) -- Read at gauge on the
instrument panel or check with a thermometer at the discharge housing.
Compressor Oil Inlet Temperature - 150° F to 160° F (66° C 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 to 60 psig (3.8 to 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 bar 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 temperature 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.
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