13-10-617 Page 53
2. Fill the system with a 50 percent charge of the new lubricant:
- Start the machine and stay there to observe.
- Allow the machine to run about five minutes at temperature, or until temperature stabilizes, then
shut down.
3. Thoroughly drain the machine.
4. Change to a new filter and separator.
5. Fill the system with a full charge of the new lubricant, then reinstall drain plug.
6. Machine should then be run normally; however, total run time after the initial change out should be
50 percent of normal anticipated service life of the new lubricant.
- Drain all lubricant from the system, change the filter and separator, and replace with a full
charge of the new lubricant.
7. Subsequent lubricant change outs should be at normal intervals. (See “Oil Change Interval” and
Figure 5-6).
OIL LEVEL GAUGE (Figure 1-4, page 11) indicates the amount of oil in the oil reservoir. When the unit
is stopped, the oil level will be higher in the RUN range than when operating on load. When the unit is
operating, the oil level should be near the center of the RUN range. In normal operation, the oil level will
fluctuate slightly as the compressor loads and unloads. Add oil only when the oil level gauge indicated in
the ADD OIL range when the compressor is loaded. Drain oil only when the oil level gauge indicates
EXCESS OIL when the compressor is loaded.
OIL CHANGE INTERVAL - Recommended oil change intervals are based on oil temperature. (Figure 5-
7
, page 55) shows how the change interval is affected by temperature.
When operating conditions are severe (very dusty, high humidity, etc.), it will be necessary to change the
oil more frequently. Operating conditions and the appearance of the drained oil must be surveyed and
the oil change intervals planned accordingly by the user. Gardner Denver offers a free oil analysis
program with the AEON lubricants and we recommend a sample be sent in at 100 hours on a new unit.
Discharge
Temperature
AEON 4000
Change Interval
AEON 9000 SP
Change Interval
AEON 9000 TH
Change Interval
Up to 180° F (82° C)
4000 hrs. 8000 hrs. 8000 hrs.
180° F to 190° F (82° C to 88° C)
3000 hrs. 6000 hrs. 6000 hrs.
190° F to 200° F (88° C to 93° C)
2000 hrs. 4000 hrs. 4000 hrs.
200° F+ (93° C)
1000 hrs. 2000 hrs. 2000 hrs.
Figure 5-6 – OIL CHANGE INTERVAL
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