Results 1 to 4 of 4

Thread: Cambridge MAU

  1. #1
    Join Date
    Mar 2010
    Location
    plano,IL
    Posts
    28

    Cambridge MAU

    Had a winter maintenance call for a car wash with Cambridge MAUs.
    below is the flame sensor, notice how its worn down to a nub. Amazingly it was still able to read flame. told mgr need to replace sensor, didnt wanna do it.
    The second is the amount of clearance i had at the blower door.
    Third is looking in at the blower, couldnt get a good photo of how loose the belts were.

    3 months later get the call for no heat. new sensor vs old sensor
    Attached Images Attached Images     

  2. #2
    Join Date
    Nov 2011
    Location
    Charleston, Wv.
    Posts
    1,272
    NICE!! it's amazing how people will pay for a second service call PLUS the part you wanted to replace the first time you were there!!!

  3. #3
    Join Date
    Jun 2009
    Location
    Ontario, Canada
    Posts
    1,008
    should've sanded down the sensor in the 1st place...lol as long as they are in the flame and not coated by insulator, they will still have rectification through them, to a certain point of course.
    Parts Changer Extraordinaire
    ------------------------------------------------------
    Have tools and gauges, will travel.

    RIDGID|YELLOW JACKET|UEI|TESTO|STANLEY|CPS|VETO| KLEIN|MILWAUKEE|MASTERCRAFT|

  4. #4
    Join Date
    Oct 2002
    Location
    Lady Lake, Florida
    Posts
    799
    Some of those customers are like that. The only thing you can do is document what you found and recommended repairs because you can bet when it does fail the next day, they will be hollaring that you did'nt fix it. Those cambridge air units have the simplest design except for changing the bellts depending on what you're working from for access.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event