Compressor Oil System Check; Removal Of Oil Separator For Inspection Or Replacement; Air And Oil Discharge Temperature Check; Oil Cooler Temperature Differential (Air-Cooled Radiator) - Gardner Denver Electra-Screw EDEQHF Operating And Service Manual

To measure the pressure differential, see "Pressure and
Temperature Digital Readouts" in Section 4, page 4.
Simply subtract the downstream reading from the up-
stream reading.
CAUTION
Using an oil separator element at ex-
cessive pressure differential can cause
damage to equipment. Replace sepa-
rator when "Change Separator" mes-
sage flashes.
NOTICE
A sudden drop to zero pressure differ-
ential or sudden heavy oil carryover
may indicate a ruptured element.
Inspection - After removal of separator element, shine
a light inside the element to reveal areas of heavy dirt or
varnish deposits or breaks (ruptures) in element media.
Removal Of Oil Separator For Inspection Or Replace-
ment:
~\\DANGER
Air/oil under pressure will cause se-
vere personal injury or death. Shut
down compressor and relieve system
of all pressure, disconnect, tag and
lockout the 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 the 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.
5.
6.
7.
8.
9.
Lift the separator from the separator housing.
Inspect and/or replace the separator as necessary.
Be sure the o-ring is not damaged. Before installing
(or re-installing) any separator, apply grease to the
o-ring. Oil will be wiped off by the chamfer and the
ring could be damaged.
Remove any gasket material adhering to the top
plate or separator housing, and install the new
gasket.
Lower the separator into the housing and center
the separator on the chamfer. Press the separator
down into the housing. Do not use excessive force
as separator damage can occur.
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.
Run the unit and check for leaks.
COMPRESSOR OIL SYSTEM CHECK - The following
readings are based on ambient temperature of 80°F 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 -170° to 200° F -
Read at gauge on the instrument panel or check with a
thermometer at the discharge housing.
Compressor Oil Inlet Temperature -165 to 175° F -
Install tee at oil filter outlet and check with thermometer.
Oil Inlet Pressure - Check at the fitting in the line near
the compressor oil inlet. With air receiver pressure at
100
psi, oil inlet pressure should be 65-75 psig.
Oil Cooler Oil Pressure Differential (Air-Cooled Ra-
diator) - Check differential across oil system by measur-
ing oil inlet pressure as described above.
Oil Cooler Temperature Differential (Air-Cooled Ra-
diator) - The oil temperature differential depends on the
temperature of the air at the oil cooler fan and cleanliness
of the 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 the air discharge temperature - see the
gauge on the instrument panel. The outlet oil tempera-
ture may be checked by installing a tee at the oil filter
outlet.
13-8-610 Section 5 Page 6