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Recently my kitchen sink RO system was not producing very much product water (about 4 cups overnight) before the RO water is depleated from the tank. I decided to take a look at things. I replaced the two pre-filters in the canisters, emptied the storage tank and set the empty pressure to 8 psi (with valve closed). This was my mormal maintainance routine every 6 months.
When I turned on the water and let it fill up overnight, it only produced about 4 cups of water. The storage tank feels really light. I removed the drain line from the sink and put it in a bucket. When I turned the system on again, I saw a lot of water coming out of the drain tube (low pressure, but constant flow). I did nto see any procuct water being produced. I thought maybe the ASOV might be bad so I bypassed it and just ran the RO membrane output to the permeate pump directly. Same thing, lots of drain water, no product water. Also, the permeate pump (ERP-1000) is not making lots of clunking noises like it normally does (maybe once every 5-10 minutes now). If I remove the line to the Permeate pump permeate input, no water flows out from the RO membrane housing. If I remove the check valve from the RO membrane housing, then water will slowly drip out. Does anyone have any ideas here?
Here is how my RO system is set up.
It looks exactly like Figure 5. Then I removed the ASOV and now it looks like Figure 6. RO schematic (Aquatec permeate pump installation)
I noticed a metal check valve at the output of the RO membrane housing. Is this something that needs to be serviced/replaced. Is is even necessary?
I also took the membrane out to see what kind it was so I could order another one if I needed. It said TW2012-60AP. I searched the internet and could not find a listing for it. Are there any recommendations for good quality replacement membranes? What other items should I replace while I'm ordering parts?
Thanks.
When I turned on the water and let it fill up overnight, it only produced about 4 cups of water. The storage tank feels really light. I removed the drain line from the sink and put it in a bucket. When I turned the system on again, I saw a lot of water coming out of the drain tube (low pressure, but constant flow). I did nto see any procuct water being produced. I thought maybe the ASOV might be bad so I bypassed it and just ran the RO membrane output to the permeate pump directly. Same thing, lots of drain water, no product water. Also, the permeate pump (ERP-1000) is not making lots of clunking noises like it normally does (maybe once every 5-10 minutes now). If I remove the line to the Permeate pump permeate input, no water flows out from the RO membrane housing. If I remove the check valve from the RO membrane housing, then water will slowly drip out. Does anyone have any ideas here?
Here is how my RO system is set up.
- Input water -> sediment filter (canister 1) -> carbon filter (canister 2) -> ASOV high pressure side -> RO membrane housing cap ->
- RO membrane housing product water -> check valve -> flow reducer? -> permeate pump permeate in -> permeate pump permeate out -> storage tank t-fitting -> post filter -> faucet
- RO membrane housing waste water -> 400 flow meter -> permeate pump brine in -> permeate pump brine out -> sink drain
It looks exactly like Figure 5. Then I removed the ASOV and now it looks like Figure 6. RO schematic (Aquatec permeate pump installation)
I noticed a metal check valve at the output of the RO membrane housing. Is this something that needs to be serviced/replaced. Is is even necessary?
I also took the membrane out to see what kind it was so I could order another one if I needed. It said TW2012-60AP. I searched the internet and could not find a listing for it. Are there any recommendations for good quality replacement membranes? What other items should I replace while I'm ordering parts?
Thanks.
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