Gardner Denver APEXVS7-11A, Operating And Service Manual

Page: 51 / 71

13-25-603 Page 50
These charts are easily used by reading the ambient temperature along the bottom axis of the chart and then reading
the appropriate pressure curve to determine the corresponding dew-point temperature on the left axis of the chart.
The compressor discharge temperature must be maintained at a minimum of
10
°
F above this dew-point temperature
to prevent condensation accumulation in the lubricant reservoir. These charts assume 100% relative humidity.
OIL CHANGE INTERVAL - Recommended oil change intervals are based on oil temperature. Figure 5-5,
page 50 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
°
to 190
°
F (82
°
C to 88
°
C)
3000 hrs. 6000 hrs.
190
°
to 200
°
F (88
°
C to 93
°
C)
2000 hrs. 4000 hrs.
200
°
F+ (93
°
C)
1000 hrs. 2000 hrs.
Figure 5-5 – OIL CHANGE INTERVAL