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Thread: AAF HEPA filter
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28-03-2005, 02:26 PM #1
AAF HEPA filter
anyone know what is the final pressure drop of the HEPA can be defined? I had a problem of setting the filter clogged alarm, are the setting related to your fan curve.
Now my exhaust fan is operating with a frequency inverter at 40Hz which can achieve the exhaust flow rate with new HEPA filters, i.e. not in full load condition with a static pressure locate at mid stream of air duct to control the frequency inverter.
I plot the fan curve had about 700pa differrential between the full load speed fan & 40Hz speed.
As the AAF web site do not have the final resistance figure or graph of the ASTROCEL I filter,
CAN ANYONE HELP? THANK YOU
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28-03-2005, 07:59 PM #2
Re: AAF HEPA filter
Try perhaps at http://www.camfilfarr.com/script/main.as and let us know their answer. We all could learn of it.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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02-04-2005, 12:09 PM #3
Re: AAF HEPA filter
thank you for your advice, i had calibrated the pressure drop alarm to 470pa, waited to see the next round of maintenance to review the pressure drop in next 3 months, we shall also check the negative pressure can be kept or not?
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