Converting 1962 Huppert's Delux Furnace Model 236dl 240v, 7.5a

Garball

New Member
Hi everyone. I recently bought at auction a 1962 heat treat oven (wasn't cheap). Paid $500 for it. It's really heavy and looks very well built. The temp display stopped working and wasn't reliable even while it worked. I'm wondering if I should just replace the thermo couple with a type S or K and keep using it as is or just do a modern PID conversion? There are 4 independent elements in the furnace wired as per schematic attached. Can anyone with experience chime in and let me know your thoughts?

Cheers, Gary.

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