When the unit begins pulsing, it does not mean that the filters are no longer unusable. This pulsing is simply the cleaning cycle which extends the filter life and reduces operating costs.
Your actual controller settings will be determined by your experience and set up. Over time, the filters will clog to a point where the pulsing will not reduce the pressure differential to an acceptable level. This is the point when the filters should be changed.
The base line reading is a reference point of the reading with clean filters.
Initially, you should take readings on a weekly basis, or at any point where the smoke plume is visibly not being removed from the work area. This data will be used to predict the time to change the filters, or adjust the preset levels. Remember, no two applications are exactly alike. Because of this your own experience will be needed to optimize filtration, and minimize filter replacement costs. Once you have verified that the Weld Station is picking up the fumes or smoke, look at the metal intake spark baffles at the back of the welding booth(s). These filters should be washed when they become visibly dirty/contaminated. If the unit begins auto pulsing at 7.0 in. H 2 O and the smoke is still being drawn in at an acceptable level, the setting could be increased to a higher number. The correct number is based on trial and error. The process for determining your specific filter change interval is based on many variables. Please feel free to establish a filter change interval that meets you application and desired performance results. By properly monitoring the filters you will reduce filter costs and improve the efficiency of the units.
Proper filter cartridge replacement is important to optimal performance of the Weld Stations.
Copyright © Clean Air America, Inc.
Weld Station User Manual, March 2011
Page 70 of 112
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