Figure 5-1 - Checking Oil Level; Figure 5-2 - Changing Oil Filter - Gardner Denver AirSmart VS20A Operating And Service Manual

9. 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. Inspect the oil separator element for dirt accumulation;
replace if necessary. If a varnish deposit exists, contact the factory for recommendations for
removal of the deposit and prevention of varnish.
REFILLING OIL SYSTEM - The steps to refill the drained oil system are the same as those already
presented for the addition of oil between changes – see page 43, for full details. The only exception is
that to fill all the empty lines and components (e.g., oil cooler, compressors, and oil filter) a much larger
volume of oil will be required.
The VS20 package requires nearly 2 gallons of AEON 9000SP Synthetic Lubricating Coolant to fill all the
lines and components and achieve normal oil level.
COMPRESSOR OIL FILTER - The oil filter is a vital part in maintaining a trouble-free compressor, since it
removes dirt and abrasives from the circulated oil. It should be replaced every 1000 hours of operation,
sooner if necessary due to dirty environment and when the oil is changed.
A flow bypass valve, mounted inside the filter cartridge, provides uninterrupted oil flow when the filter
element is contaminated and its backpressure exceeds 29-36 psid (at typical operating conditions of
140°F and 100 psi). However, since this condition introduces unfiltered, potentially contaminated oil into
the compressor, it is best avoided by following the recommended filter replacement intervals.
Figure 5-1 – CHECKING OIL LEVEL
Figure 5-2 – CHANGING OIL FILTER
13-18-604 Page 45