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Post by ryanp930 on Mar 22, 2024 14:07:15 GMT
Hey Fellas,
I have a machine where the conductivity is stable and then after the techs prime and test it, the condo shoots up to 17.0 right after the test. They stated that it will eventually go back down and stabilize but im a little stumped as to why that happens.
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Post by Sheepdog1 on Mar 22, 2024 16:19:00 GMT
just one machine or all the machines? what are the hours and model of the machines. i have seen the centralized loop pumps cause this. does it happen with a jug? check your loop pressure. maybe rebuild your A/B pumps (new diaphragms)
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Post by ryanp930 on Mar 22, 2024 16:26:33 GMT
It happens on a few machines. we thought the same thing about the loop so we recently adjusted the pressure but if we go any lower then the last stations in the loops get no pressure. we're looking at about 9psi at the beginning and 4psi at the last station in the loop. Havent had it happened when we were on jugs. we recently had a new RO installed back in December.
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Post by Chuck Weddle on Mar 22, 2024 16:58:18 GMT
It happens on a few machines. we thought the same thing about the loop so we recently adjusted the pressure but if we go any lower then the last stations in the loops get no pressure. we're looking at about 9psi at the beginning and 4psi at the last station in the loop. Havent had it happened when we were on jugs. we recently had a new RO installed back in December. It may have changed since I had Fresenius machines but Fresenius used to say no more than 2-3 psi. The machines actually don't need pressure at all, only a flooded suction. If it needed pressure, it wouldn't be able to draw out of a jug. |
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Post by ryanp930 on Mar 22, 2024 17:12:55 GMT
It happens on a few machines. we thought the same thing about the loop so we recently adjusted the pressure but if we go any lower then the last stations in the loops get no pressure. we're looking at about 9psi at the beginning and 4psi at the last station in the loop. Havent had it happened when we were on jugs. we recently had a new RO installed back in December. It may have changed since I had Fresenius machines but Fresenius used to say no more than 2-3 psi. The machines actually don't need pressure at all, only a flooded suction. If it needed pressure, it wouldn't be able to draw out of a jug. gotcha that makes sense, my manager and I were thinking the same thing because we used to be gravity fed and didnt have those issues, now we're seeing conductivity issues a lot more. Thank you guys! |
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Post by Sheepdog1 on Mar 22, 2024 21:03:32 GMT
put your central loops on a timer, maybe once or twice a day they they kick on if you need a little help removing air
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Post by gnurk on Mar 23, 2024 12:08:50 GMT
they usually have the booster pumps after the conc tanks in order to get over doors etc in the loop those plastic regulators dont work very well and leak i have noticed the cond goes up when the test first starts as well as tech services and thay dont have a clue
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Post by dave74 on Mar 23, 2024 13:53:40 GMT
I visited a dialysis unit that was under construction. They had large concentrate holding tanks but no overhead tanks for gravity feed or pumps. I told them their system wouldn't work. They assured me it would work.
It didn't work, and they had to install pumps. As far as I know, you have to have overhead tanks for gravity feed or pumps that run while the system is in use.
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Post by Sheepdog1 on Mar 25, 2024 21:53:23 GMT
Dave74 it depends on where you are in regards to sea level... our units are at 800' and rarely have to kick on our pumps and run on gravity with the overhead Tanks.
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Post by sheepdog1 on Mar 26, 2024 15:58:17 GMT
was supposed to say no overhead tanks
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Post by Chuck Weddle on Mar 26, 2024 16:26:05 GMT
was supposed to say no overhead tanks What altitude you're at will have no effect on whether you need a pump or not. If your tank is on the same floor as your clinic and you don't need a pump, your loop doesn't go up into the ceiling or even over doorways. Liquid can't run uphill without mechanical assistance. |
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Post by sheepdog1 on Mar 26, 2024 17:54:28 GMT
our clinics in Ca go up and down walls on gravity with out pumps. Right out of the storage tank it goes from the floor up 15' and to the floor going up and down. its the pressure of how much fluid is in the tank that allows to run off (pressure) gravity.... defiantly not mechanical... if the tank is running low it will get air sometimes so we keep them at least 1/2 full at all times to run off (pressure) gravity. We do have pumps installed in case but we hardly use them.
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stuff
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Posts: 231
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Post by stuff on Mar 27, 2024 13:39:12 GMT
We had this issue at a facility. We went crazy and found if we replaced both the flow motor and degas motor it went away. Pressures on these would be in range but gave problems like this.
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Post by Winston123 on Mar 28, 2024 11:59:45 GMT
I recently just took over a facility and having the same issues, after pressure test on the machines, it shoots up to 17.0 then it post conductivity would regulate in time but the pre-tx conductivity wouldn't so it would fail the independent conductivity test.
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