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I heard of those, I used to manafe a chain of washes that had them but they were replaced with stack units in th 80's. I only saw a picture of the pump in a SSCWN issue.

A lot of you have probably never seen anything like this, but in the 70's and 80's many car washes used what was basically a well pump setup for low pressure delivery to the bays. It would have a pump, a bladder tank, a pressure switch to keep it pressurized, and there had to be a check valve...

My bays are at capacity all day Saturday and Sunday, but what about a carpet extractor cleaner in a couple of the slower bays that's only available during the week? I have thought about adding one somewhere on the lot, but without plumbing for water or a drain it would have to dump into a tank...

The restart is a cash ability with the timer. I can't say for all CC equipment, but neither Hamilton's D.A.N. nor Cryptopay offer a restart. Cryptopay in count-down won't work unless you intentionally mismatch the time per coin across the two units, and that can lead to other problems. One of...

Does it use the same tips for the presoak and the high pressure? Aren't they zero-degree tips? I feel like you might not have great results adding air to that setup, but as a rule you should have air assist on the presoak. You can run the chemical much less diluted and get better cleaning...

The only time I've seen them in use they were free for customers to use. The guy said it brought him a lot of business.

You can use thay 40-year-old timer with a Sensortron by powering the Sensortron with a transformer and using the two red/green wires to the coin switch, exactly as I described above. You can use a mercury relay, but you don't have to. That timer will not accumulate coins above its start time...

FWIW I don't care about the marketing scroll, and I don't think customers ever read it either. I'm concerned that the LED6 in retro mode will burn out those dots very quickly. I've had my LED7s displaying the startup price for four years and there's no obvious degradation of those segments. I...

I'm still at $1.50 for 3 minutes. I tried to go down on the time only, and customers would hear the beep, work their way around to add a couple coins, then it would beep again almost immediately and they felt like they were getting ripped off. I got LOTS of complaints. I may go up to $2 soon...

Until the LEDs start to fail. Hopefully the newer timers are better, but I put LED6 timers in several washes in 2018/2019 and a LOT of them started failing after just a few months. I'm replacing mine with LED7s while I still can. I set them to retro so it just displays the start amount, no...

They probably figure that without operating costs, that's all you need.

No. You need a 24V transformer to power the coin acceptor. You will use only the two red/green wires to the coin signal inputs.

The prefilter keeps large particles out of the membrane. A lot of the systems I've seen have the prefilter before the inlet solenoid. Most are 5 micron filters, I usually use 1 micron if I can find them in the right size. Years ago I had a customer who was having membranes foul after just a...

Did you check it as I described? The low pressure systems are not fully separate because they tee in at the same boom. I have seen the low pressure applications back up through the high pressure line, through the pump, and into the "rinse" tank many times.

None that I'm aware of, but I heard the stories.

The prefilter shouldn't affect the TDS.

For some I believe it's ignorance, or possibly cost savings. The cheapest system I've seen is wired against electrical code and uses one leg of 240V run through a float switch with the other leg wired live all the time to the motor. It works, but it's not proper, and with the way it chatters...

That's what the manufacturers say, but in my experience you'll start seeing spots above 30 PPM. Mine is up to 34 and there's very light spots left behind. I test the RO reject water for chlorine. The system will concentrate it and will show up easier. Some municipalities use so little...

I like to replumb the systems to run 1:1 and recirculate some of the reject to the pump. The theory is that having the water moving faster through the membrane makes for both a cleaner and a bit more volume of an output.

I called every bank within 30 miles of me. The only ones that have a coin counter are the federal credit unions, with a maximum of $99 at a time, and a local bank that's right around the corner from my house. Of course this bank isn't open on Saturday, and at the time I had a full-time Monday...