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  1. #1
    Join Date
    Oct 2007
    Location
    Sweetwater NJ
    Posts
    18
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    Trane CVHF1280 Evaporator info

    Hi , Used this site for information on my jobs for a number of years and always gained the info I needed . I have a nj red seal steam /blue seal refrigeration engineer, I tend more to the mechanical repair side of my trade than operations i have worked as HVAC Tech ,heavy equip mechanic , large and small pump guy rigger ..all round bld Maintenance . Trained for 4+ yrsr . So I play with big toys in buildings .
    The job I'm on has trane cvhf 1280 chillers . We have a chiller that prior to my arrival was going off on cold evap . The chiller tech recommended evaporator tube cleaning . The head was already removed when I started . I completed the cleaning and reinstalled the end cap . The chiller still went out on cold evap. Chiller tech added freon .Still went out on cold evap when under load a light load could be carried. A camera was introduced into the inlet /outlet side of evap head . A broken baffle was found (not by me) and estimate given for removal and repair .
    I have been asked to do this in house and haven't found any info that I would like to have to plan the job. so I thought id write to see what i can get here .
    1 . Im estimating weight of the head at under a ton maybe 1500 lbs for my rigging but have no reference to be sure .(important based on size and thickness of plate )
    2. I went thru everything I can looking to know just how the water flow should be going inside evap. Baffle placement ( two pass ??)
    3 i borrowed a camera and went in at the thermometer plugs and I see a dividing baffle splitting inlet from outlet intact . on the outlet side looks like maybe a lower baffle with a broken weld . (why Id like to see a pick of flow )
    I ve never pulled this side off before .
    4 considering the size of metals used I have a hard time seeing how this can happen how common and what may be the cause since i have 4 more machines like it . ive never encountered this on a chiller
    So Im not working on the gas side/ do carry a universal / Have cleaned many tube ,operated trane , mcquay york and carrier assisted in chiller rebuilds, motors bearings air handlers coils heat exchangers big valves and electrical and tons large pump repairs but I'm not a chiller tech . Dont want anyone upset . I highly regard u guys and stick to the nut and bolt side . Any info will be appreciated .

  2. #2
    Join Date
    Oct 2007
    Location
    Sweetwater NJ
    Posts
    18
    Post Likes
    Thread Starter
    Well after hours of searching web Ive found the water box weight I think at size 210l and 300 psig the lid should weigh in at 2205 LBS so much for my orginal math 1500 and my engine lift plan .

  3. #3
    Join Date
    Oct 2007
    Location
    Sweetwater NJ
    Posts
    18
    Post Likes
    Thread Starter
    Well took off inlet and outlet piping baffle in great condition it looks like what I expected one vertical baffle Except for a long cable from a goodway and a few cleaning brushes it looks great inside for a 30 yr old machine . No sense in pulling water box .Will be having a long conversation with contractor about the hours i put in this .

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