It's not the GE Merlin, is it? That's an entire different beast. You said holding tank so I assume not.
A typical RO system dumps quite a bit of "bad" water so while it may look like it's continuous, it may not be. Not sure of the exact amount but I thought it's something like 8-11GAL of waste for every 1GAL of filtered water. So when you do the math, the waste discharge may run for quite a bit after filling something like a pitcher or coffee pot.
Here is the issue.
The water system is in a recreational home here in Alaska used maybe a month per summer.
In the owners absense I shut off the well pump but leave the system presurized so the boiler has makeup water if needed.
I noticed my pressure tank was at zero two days in a row with no water being used. This had me scratching my head for a while because I couldnt tell where the water was going.
I snooped around and noticed the RO was draining into the p-trap when no water had been used. This would mean that the RO filter had drained about 30 gallons into the drain. The pressure tank is not a small one.
I havent been back to day to check but I had shut the supply to the RO off at the angle stop valve.
I just spoke to a tech plumber in anchorage he said the auto shutoff valve may be stuck. It's a new RO filter and the owner did the initial fill on it. I just installed the plumbing and componants and figured since he would be changing the filters that it would be good if he did the initial charge.
I do know if you don't turn the main supply off to the RO, it will continue to discharge. I've made that mistake before. I turned off the valve to the tank but not the main supply and when I moved a frig, water was still coming out (water line for frig was hooked to RO system).
Not uncommon for a new RO not to function properly out of the box. System check needs to be done. membrane tds, storage tank pressure , product water to waste water ratio and aso. Whats the make of the unit or where was it purchased?
it's a GE from THD the HO did the initial fill so I will drain the tank and check the pressure. I just wasn't sure how much waste waster to expect. I have an install operation guide. I'm just glad thats where the water was going.
Check storage tank pressure 8psi when empty, but that will not fix a bad aso, not positive on a ge unit but most likely a external aso-just replace it. What is the gpd rating? that will tell me what type of membrane it is.very general rule is @ 3gal waste to 1gal product water this can be greatly improved with add on equipment. I Installed a zero waste water RO 1.5 years ago, I was real skeptical about it but performing great.
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