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SECTION 6
AIR FILTER
AIR FILTER – The air filter furnished as standard equipment is a panel type washable filter. The air filter
must receive proper maintenance if maximum service is to be obtained from the unit. Establishing
adequate and timely filter service is MOST IMPORTANT. With wide variation of dust conditions
encountered, only experience can determine the proper time element for servicing filters. Although a
paper filter element is normally considered expendable, proper and careful cleaning can extend its
original life several times.
Filter Element – Service the air filter element when the “CHANGE AIR FILTER” LED is illuminated.
Clean every 50 to 150 operating hours depending on dust conditions.
NOTICE
Use only genuine Gardner Denver air filter elements on Gardner Denver
compressor units. Genuine parts are available through your authorized
Gardner Denver distributor.
To service:
Remove louvered filter cover and filter element by removing the six (6) cover to enclosure screws.
Two methods of cleaning are recommended. Use of compressed air is effective when the major
contaminant is dust. Washing is effective on carbon, soot, and oil laden elements.
DO NOT ATTEMPT TO CLEAN ELEMENTS BY BEATING OR RAPPING.
When air is used, direct a jet of air (100 PSI maximum) against the clean air side of the element in the
opposite direction of normal air flow. Move the air jet up and down the pleat, slowly moving across the
face of the element. The nozzle must be kept at least one inch away from the element. Take care that
the paper is not ruptured by the nozzle or air jet.
When cleaning by washing, use a good non-sudsing detergent and water. Soak the element in a solution
of two (2) ounces of detergent per gallon of water (140°F maximum) for at least 15 minutes. Swish the
element around in the solution (2 minutes) to help remove dirt. Warm solution gives best results. Rinse
the element with a stream of water (40 PSI maximum) opposite to normal air flow until rinse water is clear.
DRY THE ELEMENT THOROUGHLY BEFORE USING. DO NOT USE LIGHT BULBS FOR DRYING.
Warm air (160°F or less) must be circulated as high surface temperatures can burn or scorch the filter
paper.
After cleaning, thoroughly inspect the element for dirt on the clean air side, holes or damage, by looking
through the element toward a bright light. Do not reuse damaged elements.
Filter Element Life – The element should be replaced after six (6) cleanings or if:
1. Visual inspection indicates a rupture, crack or pin hole in the pleated media. Inspection should be
done by placing a bright light inside the element
2. Pressure drop through a filter with a freshly cleaned element is below three (3) inches (76 mm) of
water with the compressor running at full load – this would indicate a rupture or crack.
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