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When operating conditions are severe (very dusty, high
humidity, etc.), it will be necessary to change the oil
more frequently. Operating conditions and the appear-
ance of the drained oil must be surveyed and the oil
change intervals planned accordingly by the user.
Gardner Denver
R
offers a free oil analysis program
with the AEONt lubricants and we recommend a sam-
ple be sent in at 100 hours on a new unit.
DRAINING AND CLEANING OIL SYSTEM
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.
Compressor, air/oil reservoir, separa-
tion chamber and all piping and tub-
ing may be at high temperature during
and after operation.
Always drain the complete system. Draining when the
oil is hot will help to prevent varnish deposits and carry
away impurities.
To drain the system, use one of the following methods:
1. If the unit is not elevated high enough to use the
oil reservoir drain line to drain oil, a small hand,
electric or air operated pump should be used to
drain reservoir through the oil filler opening or from
the drain valve.
2. If the unit is elevated so that the oil reservoir drain
can be used, empty the oil reservoir through the
drain valve to a suitable container or sump.
3. If the drained oil and/or the oil filter element are
contaminated with dirt, flush the entire system:
reservoir, oil cooler, mixing valve and lines. In-
spect the oil separator elements for dirt accumula-
tion; replace if necessary. If a varnish deposit ex-
ists, contact the factory for recommendations
for removal of the deposit and prevention of var-
nish.
FILLING OIL RESERVOIR
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 sure the 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. Wipe away all dirt around the oil filler plug.
4. Remove the oil filler plug and add oil as required
to return the oil level to the center of the green
range on the gauge.
5. Install the oil filler plug and operate the unit for
about a minute allowing oil to fill all areas of the
system. Check for leaks.
6. Shut down unit, allowing the oil to settle, and be
certain all pressure is relieved.
60, 75 & 100 HP
40 & 50 HP (45, 55 & 75 KW)
Refill Capacity For Normal Oil Change 5.5 U.S. Gallons 8.5 U.S. Gallons. . . . . . . .
(32 Liters)
Red to Yellow Range 1.25 U.S. Gallons 2.0 U.S. Gallons. . . . . . . . . . . . . . . . . . . . . . .
(7.5 Liters)
FIGURE 5–6 – APPROXIMATE OIL SYSTEM CAPACITIES
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