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Post by dialysisbob on Mar 13, 2024 22:11:07 GMT
Hello,
The conductivity would not go up past 10 as I have replaced the acid and bicarb pumps for a new ones and no flow errors, did calibration and such and no flow errors. Temperature is 37 and I tried the following actuator, power logic, ntc2, transducer 9, 10, pre and post temp sensor. At debug screen it only shows 9 on the conductivity pre and 10 on the post.
What I am missing? Thank you in advance.
2008t BS machine with 24k
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Post by dave74 on Mar 13, 2024 23:09:01 GMT
You say you did calibration, but what did you calibrate if the conductivity won't come up?
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Post by dialysisbob on Mar 14, 2024 1:54:09 GMT
You say you did calibration, but what did you calibrate if the conductivity won't come up? both acid and bicarb. both new pumps and it will go only to 12. |
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Post by Biomed1 on Mar 14, 2024 2:48:13 GMT
Is this a Bibag machine?
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Post by gnurk on Mar 14, 2024 12:41:49 GMT
check that your balancing chamber membrane is not ripped
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Post by Sheepdog1 on Mar 14, 2024 21:01:18 GMT
agree with Gnurk . between 20k and 40 k they will begin to rip causing your issues. Recal B chamber following replacement.
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Post by ThereAreSomeWhoCallMeTim on Mar 14, 2024 21:37:51 GMT
Just as some common condo issues and what they've been tied to: If your condo is stuck at 10 on the main screen it could either be a flow issue or acid pump issue. Can get a better idea of which by looking at CPRE on Debug 5. Acid issue the CPRE will typically be in the 3000 range. If you have a flow issue that's not allowing fluid to push through the secondary side out the drain, then you likely won't see much change in the CPRE as the fluid can't push through to get to the pre condo cell. I would check your drain output to see if any fluid is coming out. (not every flow issue will show up as a high or low flow error) If you have a condo of around 11 then it's likely a bicarb issue. If you have a condo of around 12 I would look at checking/testing to see if your balancing chamber membrane is okay. There is a good section in the troubleshooting guide that walks you through the check. For replacing the membrane there is a handy guide on how to remove the membranes without having to pull the entire chamber and valves out in the tips and tricks section.
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Post by 48yrshuntinbubbles on Mar 14, 2024 22:23:58 GMT
agree with Gnurk . between 20k and 40 k they will begin to rip causing your issues. Recal B chamber following replacement. I have always been taught to use the volume written on the balancing chamber. At the factory, an electronic, digital buret is used on the initial calibration, changing a thin rubber diaphragm will not change the volume. I just had one of the guys in our team ask the instructor in a training class, and he agreed. With that said, check the UF pump calibration on a new machine straight out of the box after the RES releases it. Same with the deair, loading, and flow pressures, you might be surprised... |
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Post by dave74 on Mar 14, 2024 23:08:23 GMT
When I took the Fresenius class, the instructor taught us not to change the volume of the balance chamber. He said there was no way we could do a field calibration with the degree of accuracy that Fresenius can. Changing the membrane should not change the volume of the chambers.
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