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Post by kolev77 on May 27, 2024 4:21:36 GMT
Hi, something strange happened to me. On a device Dialog + on-line machine , version 9.12/ 17484 hours. I changed the cell to ENDLF ver 2. Calibrated and tested, everything was fine. The unit works in two shifts. An hour after the start of the second shift, the LF accumulates an error, over 1 millisiemens, the unit goes into bypass, but in the bottom right corner it tells me that the controller cannot open the bypass valve, on the status it is also closed. This its happening on two consecutive days at the same time. The unit passes all tests and runs one shift with no problem. I'm heading to the power board valve . Please if anyone has had a similar case share an opinion.
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Post by Chuck Weddle on May 27, 2024 9:17:11 GMT
It sounds like a loose connection.
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Post by kolev77 on May 27, 2024 12:50:21 GMT
But there is something else strange. I updated the software to 9.1E and recalibrated the conductivity and temperature, everything was fine. On the first shift the unit was running normally with normal conductivity and temperature readings. On the second shift, after disinfecting with citric acid, the problem reappeared. It is now accumulating a conductivity fault, showing 14.3 on the controller, 15.4 on the supervisor and in the bottom right window the message "LLC does not require bypass LLSrequired". The unit is in bypass mode but the bypass valve is closed? I have asked the staff to increase the dialysate flow from 500ml to 800ml and this message disappears, the machine goes into dialysis mode and works normally. I am beginning to doubt the Digital Board.
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Post by SrCusEngr on May 27, 2024 20:00:56 GMT
<kolev77> I will say that I have not seen this exact problem before, I have run into some strange valve problems. And that being the case, I always go to the long green connector in the upper left of the Basic Board. I shine a bright (White LED) light on the back of the connector. If something looks shinny and glints back, it tells me that the wire is no longer locked in place and may be partially contacting the BB connector pin. I will also check all harness connectors for any dialysate corrosion. Green colored contacts can cause all sorts of weird problems.
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Post by kolev77 on May 28, 2024 2:08:54 GMT
Thanks for the tip, I checked the boks once, will check them again.
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btech
Junior Member
Posts: 55
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Post by btech on Jul 15, 2024 7:04:12 GMT
Hello kolev77 is the problem solved ? I would suggest to check the Analog board where the conductivity values are processed for the Software into digital values. It seem to have a temperature issue, thats why it happens mostly in the second therapy.
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Post by kolev77 on Jul 17, 2024 8:17:11 GMT
Yes problem solved. By itself, which is strange, I just got the technician to increase the dialysis flow from 500 to 800 and after two treatments the problem disappeared. I also checked all the cables to the electronics before that. But without success
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btech
Junior Member
Posts: 55
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Post by btech on Aug 7, 2024 12:14:40 GMT
Maybe it was just a crystallization that needed to be cleaned up.
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