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  • Deciphering Hobart serial number

    Posted by ShawnF on July 9, 2020 at 12:40 pm

    Deciphering Hobart serial number Hobart Hobart dishwasher model number CRS – 66A, serial number 85-023602. Wanting help deciphering the serial number. Specifically date of manufacture.

    nafets47 replied 1 year, 4 months ago 5 Members · 14 Replies
  • 14 Replies
  • nafets47

    July 9, 2020 at 5:04 pm


    He broke this down for me a while back when I had questions about a manual. Also if you contact Hobart tech support they might be able to assist.

    Person I got with was helpful. Her email is:

  • fixbear

    July 9, 2020 at 6:01 pm

    I believe it's 23 Jan 1985 if my memory is correct. Year and Julian date.

    • ectofix

      July 9, 2020 at 7:00 pm

      I don’t think the manufactured date is a part of the serial number and he’d need to contact Hobart for that info.

      Hobart was still making the original C-Line machines in 1985 (the ones with the control boxes mounted down on the sides of the machine below the tray tables). His question is about a C-Line-A machine (single control box up top of the machine – with rocker switches), which was their next generation of conveyor machines.

  • ectofix

    July 9, 2020 at 7:45 pm

    Shawn, just so you know. What I had broken down for @nafets47 was how to decipher the MODEL number. Hobart made things confusing in that regard. This might be spelled out in their spec sheet, but I'm presently not inclined to read all twelve pages of it. Here's THAT:

    CRS66A Dishwasher Specifications

    The model number of your machine actually denotes sections covered by TWO separate parts manuals.

    The C (conveyor) and the A in the model number means it's a C-Line A series machine. I think they started making that series around 2000 (or earlier), then retired the line for the completely redesigned CLe series machine about 2011.


    The RS in your model means it has an optional section called a recirculating scrapper (RS), which measures 22″. Hobart ALSO made an optional pre-wash section (so, PW in the model number) that was 36″. That's NOT what you have. So, you have the 22″ one. Here's the parts manual for the RS section:


    FINALLY, there's the actual DISHWASHER section. That's the section with a WASH tank, a RINSE tank and a FINAL RINSE. Your dishwasher section is actually a C44A machine (I know. Confusing…right?). Here's the parts manual on THAT:


    In mid-production – Hobart made some major changes to the C-Line A series and published a supplemental parts manual to cover those changes. Although it doesn't apply to the machine you asked about, maybe you have a newer C-Line A in your school system which it might apply to. Here's THAT:


    FWIW: The two preceding manuals (for the actual SECTIONS) both show they were revised in 2018 (vice 2016 for that supplemental manual), so might actually include parts relevant to the C-Line A series' later incarnation. HOWEVER, those revisions both merely (and ambiguously) refer to the machine differences in design as PREVIOUS CONSTRUCTION and CURRENT CONSTRUCTION. In other words, the 1st generation (older) and the 2nd generation (newer) renditions.

    LASTLY…your model number…by the NUMBERS. We already covered the LETTERS.

    As you'd said, it's a CRS66A. The 66 means the whole thing is 66″ long. Since it's a C44A with a PS22A section, then 44+22=66.

    • nafets47

      July 12, 2020 at 11:39 am

      Damn. Is that why they pay you the big bucks?

      • ectofix

        July 13, 2020 at 4:20 pm

        LOL! Well then, I want to see that bank account that nobody told me I had.

  • ShawnF

    July 10, 2020 at 7:29 pm

    Thank you for the information, the effort is appreciated.

  • fixbear

    July 12, 2020 at 3:49 pm

    The “C” line machines have been around for a long time. They have many generations and Mod's. Make sure you have the all important “ML” number with all Hobart. They have been bought and sold many times over the years. Presently they are part of ITW. (Illinois Tool Works) The one thing I remember from way back is how they protected there repair info and screwed there techs. At one time they had there fingers in all kinds of food service equipment. And their mainstay was always Grinders and mixers before branching out to Meat saw's, scales, wash machines, ovens, reach in coolers, and several specialty items. All for the quest to be the king. But there limited support to outside service, and high repair rates caused a backlash from buyers/users. .

  • ectofix

    July 13, 2020 at 4:31 pm

    I stumbled across a TSB today that was included as part of a service manual I got from their Hobart Service Manuals link.

    This TSB explains how to determine your Hobart equipment's date of manufacture. So long as there's a two or three letter date code in the CODE or MD block of the machine's data plate, you can narrow it down to month and year.



    Hmm. Now that I want to attach it, I can't find an icon in this reply block to do so.

    I'll post this anyway and then look around…

  • ectofix

    July 13, 2020 at 4:36 pm

    This platform gets LESS user-friendly everytime I log on.

    So, I had to go into my profile, upload the document, then copy the link. Hopefully this is it:

    Hobart Date Codes

  • fixbear

    July 14, 2020 at 8:17 am

    It definitely is constantly changing. I haven't seen a notification by E-mail for months now.

  • gerber

    February 24, 2021 at 5:41 pm

    Hey y'all's I didn't know where else to turn and this seems to be the best spot for getting some help on figuring out how old this C-44 is (that's right, not a C-44A or anything like that)

    The serial number is 12-055-944. One lady claims it's been around since before 1965.


    20210224 124329
  • nafets47

    February 25, 2021 at 11:51 am

    ectofix posted a link to dating equipment earlier in this thread. If I understood it correctly it could be 1988 or 1981

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