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DFR
Sept 22, 2022 16:07:03 GMT
Post by Fresenius123 on Sept 22, 2022 16:07:03 GMT
I have a 2008T Fresenius machine at about 25k hours. When adjusting the Dialysate flow rate to 800 the conductivity goes high but when adjusting back to 500 it runs normal conductivity. I calibrated both acid and bicarb. If anyone has an idea let me know.
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stuff
Full Member
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Posts: 231
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DFR
Sept 23, 2022 12:24:16 GMT
Post by stuff on Sept 23, 2022 12:24:16 GMT
Have you checked your motor brushes and pressures?
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DFR
Sept 23, 2022 16:03:45 GMT
Post by Fresenius123 on Sept 23, 2022 16:03:45 GMT
Yeah they have new motors in them & calibrated. Still can't seem to figure why it keeps doing it.
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phillipashleyludlow
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DFR
Sept 23, 2022 16:39:45 GMT
Post by phillipashleyludlow on Sept 23, 2022 16:39:45 GMT
i mean, sounds kinda like a cal issue. did you go through a full cal * including temp and condo* or did ya just throw some new motors in it, stroke it real quick and put it in test?
not saying we all haven't done it every now and then....but.....
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DFR
Sept 23, 2022 19:32:26 GMT
Post by Fresenius123 on Sept 23, 2022 19:32:26 GMT
I did the full conductivity calibration I didn't do temp. The new motors were put in about 3 months ago so I did the full calibrations on those.
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phillipashleyludlow
Full Member
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DFR
Sept 23, 2022 19:49:48 GMT
Post by phillipashleyludlow on Sept 23, 2022 19:49:48 GMT
When's the last annual pm done it? what's ur deair speed? if its kinda high, it might have worn out the brush motors quick. personally, id do a full pm on it if you got the time, especially the springs in the pump ( i say this as someone whos always behind on pm's  ) and the brushes. |
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DFR
Sept 24, 2022 0:00:05 GMT
via mobile
Post by robertb on Sept 24, 2022 0:00:05 GMT
what does the troubleshooting guide tell you
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DFR
Oct 6, 2022 19:41:39 GMT
Post by whitechocolate on Oct 6, 2022 19:41:39 GMT
Check balance chamber membranes. Sounds like one is possibly torn or stretched.
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DFR
Oct 7, 2022 23:25:54 GMT
via mobile
Post by robertb on Oct 7, 2022 23:25:54 GMT
did you get it fixed yet? if not you want to check your regulators even though they calibrate okay sometimes they are unable to "regulate" flow properly at the higher flows mainly the flow relief valve sometimes the lp regulator
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) and the brushes. 