Results 1 to 6 of 6
  1. #1
    Join Date
    May 2018
    Posts
    2
    Post Likes

    Hobart SR24H Undercounter Dishwasher

    Hi,

    Curious if anyone here is familiar with the Hobart SR24H (Undercounter Dishwasher with High Temp Sanitize). The unit ran fine in the past, but now it doesn't seem to work properly at all. I had replaced the booster's contactor with one that has identical or better specs, because in the past there was arcing heard and I suspected it was bad. The unit ran OK for a while, but now the behavior appears to be similar again. Is it possible the new contactor just gave out early, or is something downstream causing failure?

    It might also be worth noting we don't have the best quality water around here, could this be part of the problem, and if so is there a procedure for descaling the booster?

    Thanks for any advice you might have! I'd be happy to dig in further, take measurements, etc. so I can get to the bottom of this!

  2. #2
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    14,437
    Post Likes
    Messing with high voltage and water can lead to real bad things.

    Are you a tech or just the equipment owner?

  3. #3
    Join Date
    May 2018
    Posts
    2
    Post Likes
    Thread Starter
    As far as I know, there isn't any leaking that I can detect.

    I'm both - I have an engineering background and routinely service appliances, vehicles, and high voltage electronics (tube amplifiers, which can have voltages in the kV range. I don't have as much exposure to commercial items like this so I was hoping to get some pointers.

  4. #4
    Join Date
    Mar 2013
    Location
    Billington Heights, NY
    Posts
    17,941
    Post Likes
    booster heaters are required to have a water softening system. it's in the manual
    This forum requires that you wait 20 seconds between posts. Please try again in 50 seconds.

    Experience - knowing when to get the hell out of the way and plug your ears. "Don't be a sissy. Turn it on!"

    Poodle Head Mikey - "the world is well populated with the unknowing and the uncaring and the stupid."

  5. #5
    Join Date
    Oct 2008
    Location
    In a kitchen with my head stuck in an oven
    Posts
    1,344
    Post Likes
    Quote Originally Posted by xZapx View Post
    The unit ran OK for a while, but now the behavior appears to be similar again.
    Please be more specific:
    Is it the final rinse temp not maintaining? (You're all about the booster, so I must assume that)
    Is the water supplied to the machine at least 110°F?
    Is the water pressure during final rinse at the prescribed 25 psi ± 3 psi?
    What are your temperatures?
    What's your incoming voltage?
    Is the booster element rated for that voltage?
    You said you'd replaced the contactor. Did you do a voltage drop test across it to confirm it as the culprit?
    Is the contactor closing?
    Is there the specified amp draw by the booster element when the contactor closes?

    Maybe more questions later...
    ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °

    "You never know what others don't know." -

    If I can't laugh at myself...then I'll laugh at YOU! -

  6. #6
    Join Date
    Nov 2013
    Posts
    52
    Post Likes
    Quote Originally Posted by xZapx View Post
    Hi,

    Curious if anyone here is familiar with the Hobart SR24H (Undercounter Dishwasher with High Temp Sanitize). The unit ran fine in the past, but now it doesn't seem to work properly at all. I had replaced the booster's contactor with one that has identical or better specs, because in the past there was arcing heard and I suspected it was bad. The unit ran OK for a while, but now the behavior appears to be similar again. Is it possible the new contactor just gave out early, or is something downstream causing failure?

    It might also be worth noting we don't have the best quality water around here, could this be part of the problem, and if so is there a procedure for descaling the booster?

    Thanks for any advice you might have! I'd be happy to dig in further, take measurements, etc. so I can get to the bottom of this!
    Im very familiar with these units , but your post lacks complete details making it impossible for anyone to assist you.

  7. Likes ECtofix liked this post

Posting Permissions

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

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.