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  1. #1
    Join Date
    Jan 2013
    Location
    Central Arkansas
    Posts
    75

    chasing duct work blockage

    I work in a hospital, a few days ago we had a interesting coincidence we had to test a fire door later in the day we had a comlaint of no cooling in some areas. we found we were not getting air past a certian area so we started looking at smoke and fire dampers and fornd the a airline blown off a air actuator. Now my question is there a better way look for a blockage or do you do the same thing we had to do just start moving celing tile and chasing the duct work?

  2. #2
    Join Date
    Jul 2007
    Location
    Mount Airy, MD
    Posts
    7,281
    Thread relocated to "Tech to Tech"

  3. #3
    Join Date
    Jan 2013
    Location
    Central Arkansas
    Posts
    75
    thanks chris I realised afterwords I posted in the wrong place

  4. #4
    Join Date
    Jan 2013
    Posts
    20
    With Pneumatic there is little you can do but to trace out the lines to find the failure with a BAS system with the appropriate points you can find the location through point failures or duct pressure readings if this is monitored or temp sensor monitors. Also if it is a hybrid system you may be able to use the BAS to pinpoint the point of failure.

  5. #5
    Join Date
    Feb 2005
    Location
    In a van by the river
    Posts
    621
    I measure duct static pressure with a manometer every 20 ft or so until a general section is located with a restriction. Then I remove ceiling grids to check for dampers/ actuators in that vicinity.
    ## + years in the field never made you a know-it-all This industry is far more diverse than you are

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