Gardner Denver VST110 Operating And Service Manual page 46

ADDITION OF OIL BETWEEN CHANGES – Oil losses (typically 2 ppm) from the oil separation system
may require replenishment between scheduled changes. If (during operation only) the sight glass shows
no oil or lowest acceptable level shown in Figure 5-1, add oil per the following 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 compressor package.
3. Wipe away all dirt around the oil filler plug
4. Remove the oil filler plug and add (or drain if correcting high level) sufficient oil to adjust its level to
nearly the top of the sight glass.
5. Install the oil filler plug, open the isolation valve (when provided), restore power and run the unit to
check for leaks and proper oil level. If incorrect oil level is indicated, repeat steps 1 through 5.
Note that after compressor operation is stopped, the oil charge may partially drain back into the oil
separation reservoir and register an abnormally high level at the sight glass. DO NOT DRAIN OIL TO
CORRECT, as this condition will correct itself after resuming compressor operation.
Note that repeated addition of oil between oil changes may indicate excessive oil carry-over and should
be investigated.
Excessive oil carry-over can damage equipment. Never fill oil reservoir above
top of the sight glass
Use only CLEAN containers and funnels to avoid contamination of oil. Provide
for clean storage of oils. Changing the oil will be of little benefit if done in a
careless manner
OIL CHANGE INTERVAL – The AEON 9000TH Synthetic Lubricating Coolant shall be changed every
8000 hours of operation or as prescribed by the results of an oil analysis, whichever comes first. Note
that severe operating conditions (e.g., very dusty, high humidity, etc.), may require more frequent oil
changes.
Gardner Denver offers a free oil analysis program with our AEON 9000TH lubricant. The first sample
from a new unit should be sent in between 40-100 hours of operation.
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