Results 1 to 3 of 3
  1. #1
    Join Date
    Mar 2010
    Location
    Bangladesh
    Age
    34
    Posts
    151
    Rep Power
    8

    Filter change Frequency?



    I have some problems doing maintenance and when facing any internal audit. What is the cleaning and change frequency of G4, F6,7,8,9 Filters. What is the difference of AHU filters in HVAC system & Process machine AHU system like Coating or Granulation unit?

    We have colored in DP Gauge (on AHU) green & red with our experience and trial error basis, but in audit period they auditor asking for operation and alarm zone on the DP gauge. What are the guidelines regarding this problem according to GMP/GEP or ISPE?



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    69
    Posts
    10,444
    Rep Power
    50

    Re: Filter change Frequency?

    Contact your filter supplier for the data sheets of the filters, these should give you the expected change details.

    Example data such as here..
    http://www.airclean.co.uk/PDFData/Ca...%20Filters.pdf
    Brian - Newton Abbot, Devon, UK
    Retired March 2015
    Please support http://the100project.net/Home

  3. #3
    Join Date
    Mar 2010
    Location
    Bangladesh
    Age
    34
    Posts
    151
    Rep Power
    8

    Re: Filter change Frequency?

    We are using Camfill filters, in their manual they have all the relevant parameters but the problem is in actual practice the DP across the filter is never matched.
    Suppose a F6 filter pressure drop is 250 Pa as per manual, but in the system we installed 10 filters then what will be our expected pressure drop across filters? If we want to put all the Air Handling Unit filtration unit under standard and optimized economical system maintenance what will be our protocol or SOP or guideline?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •