Thanks for the suggestion, but that controller is more than just a timer. Here's how it worked: The user flushed the toilet, then started the treatment cycle by turning the dial to the start position, which was (and still is in the current
ElectroScan version) a 2.5 minute process. For the first 30 seconds, only the mixer and macerator runs...then a relay starts the treatment cycle by turning on the electrode pack which runs for two minutes then shuts everything off. It's a 12v gadget for which there is no existing substitute. Raritan
discontinued it in favor the EC (electronic controller) version, finally stopped supporting it in the early 90s.
Frankly, I'm surprised there are ANY left that still work...or maybe he just bought the boat with a geriatric LectraSan that came with a non-working controller. The only person at Raritan
who knew how to repair the old dial controller or cobble up a replacement retired several years ago, so unless somebody who's done it or can figure out how to reverse engineer
one turns up, he's gonna have to come up with a different plan. I don't know whether it's possible to retrofit an MC (microprocessor controller that was the successor to the EC version) controller to a treatment device that old, but that MIGHT be one option. I've suggested that he call Raritan to check that out.
Meanwhile I'm having fun doing a little work again, at least for a little while.