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Thread: FSD help 101

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  1. #1
    Join Date
    Aug 2012
    Location
    Portland, Or
    Posts
    134

    FSD help 101

    Hello group,

    I'm on a job where I need help with the fire smoke dampers.wondering how these work, I'm new to the dampers. Power open, just wondering how these work. Know nothing!!!!! They have 2 sets of FSD Honeywell #ML4115 b 1008 and the other is a greenheck with tb2000 actuator. 2 different sets of dampers, have they already been replaced before. There having issues of them closing. Looking for a 101 on FSD. Thanks group

  2. #2
    Join Date
    Dec 2001
    Location
    Phoenix, Az
    Posts
    1,247
    Typically, they close on power loss. Look for a toggle switch nearby, turn it off and they should close, turn it back on and they open.

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