6 Compressed Air Adsorption Filter Adsorption Dryer Dry Particulate Filters Air Receiver Compressor Liquid Separator Coalescing Filters Selecting the right purification products for your compressed air system To achieve the degree of air quality specified by ISO8573-1, a careful approach to system design, commissioning and operation must be adopted. Parker recommends that compressed air is treated: • Prior to entry into the distribution system • At critical usage points and applications This ensures that contamination already in the distribution system is removed. Purification equipment should be installed where the air is at the lowest possible temperature (i.e. downstream of after-coolers and air receivers). Point-of-use purification equipment should be installed as close as possible to the application. In order to correctly size purification equipment, there are a number of primary operating parameters that must be obtained from the user’s site. These are: • The MAXIMUM compressed air flow rate into the filters/dryer • The MINIMUM operating pressure into the filters/dryer • The MAXIMUM operating temperature into the filters/dryer • The MAXIMUM ambient air temperature where the equipment is to be installed • The required dewpoint (dryers) Individually, each of the primary operating parameters can influence product sizing however collectively they can have a major impact on product sizing and performance. With the primary operating parameters, basic product selections can be made, however additional information may also be required to finalise product selection. Secondary parameters include: • Minimum operating temperature • Preferred pipe connections • Available electrical supply (voltage/phase/frequency) • Customers preference regarding drains, controllers or other options Typical Compressed Air Treatment System www.parker.com/gsfe ISO Compressed Air Quality Standards
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