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08/17/2018, 02:59 AM | #1 |
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New ro unit and tds issues
Hello,
Is it possible for wound up extra water line for the in and out lines would affect the TDS of out coming water? The unit I have is; https://www.vyair.com/pumped-4-stage...EaArOqEALw_wcB Thanks
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08/17/2018, 04:35 AM | #2 |
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No...
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08/17/2018, 04:41 AM | #3 |
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08/17/2018, 04:58 AM | #4 |
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It seemed like you had enough comments in your other post so I didn't pile mine on too..
I can go back and read that again and make suggestions if you want but I thought you were waiting on new membrane/cartridge so I'll wait till after that and see if your results change.. Make sure you pack that DI stage TIGHT...You don't want water channeling past because it wasn't packed tight..
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08/17/2018, 05:30 AM | #5 | |
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I might try packing in a bit more resin. but I'm getting a reading of 21ppm before the resin which I getting told is high. I have used a handled TDS metre for a second opinion against the inline one. The TDS came out at 3ppm on the handheld so I am confident I am getting an accurate reading.
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08/17/2018, 06:52 AM | #6 |
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Yes a 91% rejection rate is not good.
You should be getting 96% min typically.. But the DI stage (when new) should easily take that to zero if it was working properly.. Pack it TIGHT man.. Pack it up TIGHT..
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08/17/2018, 07:50 AM | #7 |
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When I refill my DI cartridge, I spend at least 10 minutes just picking it straight up a few inches and then dropping straight back down on the table. Keep adding resin until it just won't compress any more. Then do it for a few more minutes.
hth
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08/17/2018, 10:12 AM | #8 | |
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08/17/2018, 10:38 AM | #9 |
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IMO a good multiple up/down table smacking to settle it like billdog said is better than a stick as far as compressing it goes..
Fill it a few inches (8-10cm for you).. Then a few up/down smacks.. Fill a bit more.. up/down smacks.... repeat as needed till its good and solid. They usually do a good job giving you the proper amount in the packs.. Use it all and get it all in there..
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08/18/2018, 06:27 AM | #10 | |
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08/18/2018, 07:09 AM | #11 |
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Are you measuring after the di? Or after the membrane? Just want to clarify?
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08/18/2018, 07:39 AM | #12 | |
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08/18/2018, 08:18 AM | #13 |
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It is normal for TDS to start high then come down pretty quick everytime you start the system. I have my apex setup to send the first five minutes of water down the drain then switch to filling my reservoirs just to help with this.
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08/18/2018, 08:27 AM | #14 |
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08/18/2018, 09:17 AM | #15 |
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Run the new filters for an hour or so...at the end of that you should have zero tds
If not something is wrong.. Report back with incoming tds...post ro tds and post di tds
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08/18/2018, 09:32 AM | #16 | |
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08/18/2018, 09:37 AM | #17 | |
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08/18/2018, 09:39 AM | #18 |
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There is a flow restrictor that should have came with your RO setup and it has to be matched to the size flow rate of RO membrane you have.
https://www.bulkreefsupply.com/rever...SAAEgJfQfD_BwE If you bought the same GPD RO membrane that the u it came with you should be OK but maybe it was shipped with the wrong one from the factory. |
08/18/2018, 09:42 AM | #19 | |
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08/18/2018, 10:01 AM | #20 |
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08/18/2018, 10:06 AM | #21 | |
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08/18/2018, 10:14 AM | #22 |
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https://www.bulkreefsupply.com/instr...-your-membrane
Check this link out it shows where it should be installed. It can be inside of the fitting/hose or it can be an online type but either type will be in the waste output line of the RO membrane. Its purpose is to keep the flow rate through the membrane correct so it can do its job. |
08/18/2018, 10:23 AM | #23 | |
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08/18/2018, 10:27 AM | #24 |
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Did you look inside the waste line?
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08/18/2018, 10:49 AM | #25 |
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Just checked and there's not one in there.
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