Model #s partially missing

I’m trying to pin point model of my Barnstead Sybrok corporation Distiller classic. I’m needing a manual for this unit . From what I’ve learned about this in descriptions and photos this has most everything going on. One thing I’m sure of is it’s a 240v unit with 4 heat elements . I’ve tested the configuration of the bus bars and concluded 2 -120v Hots , 1 -nuetral, and a ground. I have looked just about everywhere on this unit for a positive ID or part # . The tag or aluminum badge on front of unit has some wear and only tells me 60 hz and a partial serial # M-80-145 the 5 could also be a 3 . A Manual for this unit would be great , . A good explanation of how the different pipe work and what’s needed to be operationable again!. Any advise on searching the year and model to pick up the right manual would be appreciated.

Equipment: Barnstead distiller classic