Knowing how regs work makes them a lot less scary and mysterious.
Maybe they're like little gods that should never be tampered with.
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Knowing how regs work makes them a lot less scary and mysterious.
If you can't do a quick inspection and bench test of my regs and certify them as safe, I would not want you working on them. The safety has to do with performance and mechanical condition, not tearing pages off of a calendar. If that is your criteria, you don't truly understand what it is you are working on. You are simply checking boxes on a list. And if you DO understand but are taking this stance anyway, you would be knowingly ripping me off by potentially providing service I don't need.
Edit: I picked up a set of Dacor regs for basically nothing, mostly just looking for the gauges. (Parts kits are not readily available, and although some people do manage to piece together workable parts solutions I am not interested in doing so). Before stripping them down, I had a tech at one of the LDSs in the area look at and assess them. He inspected, tested, and adjusted them. We had a frank discussion about their condition.
We have no idea when they were last serviced before I got them. I have had them for 4 years. They breathe fine, hold a steady IP, no leaks, good cracking pressure. They have saved several dives, and remain safe to use. They certainly don't come close to your calendar criteria though.
Like I said before it is liability, cause it's not a matter of if but when a regulator I have given the proverbial okey dokey fails and kills someone. I stick to the manufactures service intervals. You can thank the lawyers for that. As far as my expertise, I have serviced thousands of regs from customers world wide, and I teach repair seminars. I'm a big supporter of preventative maintenance, because it's usually cheaper to maintain than fix, but if you're happy trusting your life to that so am I, just don't ask for my expert opinion to certify something you know needs to be serviced.