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 BRAHM ™ Collector is picking up the fumes or smoke, look at the
duct pick up spark baffles. These baffles 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 BRAHM ™ Collector.
What determines the maximum acceptable pressure differential reading?
The answer is a reading slightly less than the point where the unit stops drawing in an acceptable
level of smoke plume.
If the unit still draws acceptably at 7.0 in. H 2 O, then the controller can be set to begin the auto pulse
cycle at a higher level. Please see the controller programming instructions for this procedure.
If the unit stops draws acceptably at 5.0 in. H 2 O, then the controller can be set to begin the auto pulse
cycle at a lower level. Please see the controller programming instructions for this procedure.
Page 54
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