13-20-604 Page 37
To add oil, follow these steps:
1. Be sure the unit is completely off and that no air pressure is in the oil reservoir.
2. Disconnect, lockout and tagout the power supply to the starter.
3. Wipe away all dirt around the oil filler plug. It is located by the oil filter.
4. Remove the oil filler plug and add oil as required to return the oil level to the max. line on the site
glass.
5. Install the oil filler plug, run and check for leaks.
DO NOT OVERFILL. The quantity required to raise the oil level from the red range to the white range is
three (3) quarts (Figure 5-2, page 37). Repeated addition of oil between oil changes may indicate
excessive oil carryover and should be investigated.
Use only CLEAN containers and funnels so no dirt enters the reservoir. Provide for clean storage of oils.
Changing the oil will be of little benefit if done in a careless manner.
40 to 50 HP (30 to 37 KW)
Refill Capacity For Normal Oil Change 3 U. S. Gallons (11 Liters)
Bottom of Site Glass to Top of Site Glass 3 U. S. Quart (3 Liters)
Figure 5-2 – APPROXIMATE OIL SYSTEM CAPACITIES
OIL CHANGE INTERVAL - Recommended oil change intervals are based on oil temperature. Figure 5-3,
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 9000SP
Change Interval
Up to 180° F (82° C)
4000 hrs. 8000 hrs.
180° F to 190° F (82° C to 88° C)
3000 hrs. 6000 hrs.
190° F to 200° F (88° C to 93° C)
2000 hrs. 4000 hrs.
200° F+ (93° C)
1000 hrs. 2000 hrs.
Figure 5-3 – OIL CHANGE INTERVAL
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