
MAINTENANCE INTERVALS
09 OIL-X Compressed Air Filter - User Guide. ©2019.
To ensure optimal lter performance the OIL-X Grade AO and OIL-X Grade AA coalescing and dry particulate lter elements require
changing every 12 months (8736 hours) along with the automatic oat drain.
Unlike coalescing and dry particulate lter elements which are changed annually to guarantee compressed air quality, the lifetime of an
adsorption lter element / cartridge can be attributed to various factors and will require more frequent changes. Factors aecting the
lifetime of adsorption lters are:
Oil vapour concentration
e higher the inlet concentration of oil vapour, the faster the adsorption material capacity will be used, resulting in reduced adsorption
lter element / cartridge lifetime.
Bulk oil
Adsorption lters are designed only to reduce oil vapours and odours, not liquid oil or oil aerosols. Poorly maintained or non-existent
pre-ltration (coalescing lters) will cause the adsorption lter capacity to be used quickly resulting in reduced adsorption lter element /
cartridge lifetime.
Temperature
Oil vapour content increases exponentially to inlet temperature, reducing adsorption lter element / cartridge lifetime. Additionally, as
temperature increases, the adsorption capacity of the adsorbent material decreases, again reducing adsorption lter element / cartridge
lifetime.
Relative Humidity or Dewpoint
Wet air reduces the adsorptive capacity of the adsorbent material, reducing adsorption lter element / cartridge lifetime. Ideally, in-line
adsorption lters should always be placed downstream of a compressed air dryer to prolong adsorption lter element / cartridge lifetime.
Compressor oil changes
When compressor oil is changed, the new lubricant burns o “light ends” which increases the oil vapour content for hours or even weeks
afterwards. is increase in oil vapour content is adsorbed by the adsorption lter element / cartridge, reducing the adsorption lter
element / cartridge lifetime.
OIL-X Grade ACS Adsorption Filters
e performance of the OIL-X Grade ACS element is based upon a nominal inlet temperature of 21°C, with a pressure dewpoint of -40°C
and a maximum oil vapour inlet concentration of 0.018mg/m3. Under these conditions, OIL-X Grade ACS will have a lifetime of 650
hours. Operating OIL-X grade ACS at higher inlet temperatures / higher inlet oil vapour concentrations / or before a refrigeration or
adsorption dryer will result in lower adsorption lter lifetime. Replace the carbon lter element upon detection of vapour, odour or taste.
OIL-X Grade ACS are recommended for point of use applications only where frequent element changes are acceptable.
OIL-X Grade OVR Adsorption Filters
Unlike in-line adsorption lters (OIL-X Grade ACS), OIL-X Grade OVR adsorption lters are sized and selected to not only provide
consistent air quality but to also provide 12 months of cartridge life. is 12 month (6000 hours for models OVR 100 ~ OVR 250 and
8736 hours for models OVR 300 ~ OVR 550) cartridge life is dependent upon sizing for the following inlet parameters: maximum inlet
temperature / compressor type, minimum inlet pressure, position in system (before or after a dryer) and inlet oil vapour content. OIL-X
Grade OVR adsorption lters are designed for both plant scale (compressor room) and point of use applications.