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Post by Breakfast on Sept 1, 2022 19:14:07 GMT
Currently working on a machine that was pulled for "Alarm test keeps failing temp". So far the temperature seems to be in it's normal range, close to 37, but I can't test it because I'm getting a 17.0 conductivity. Unfortunately the troubleshooting guide only seems to cover low condos, not high ones. In my experience high condos like that have usually been associated with a flow error and it's usually been motor brushes or a tear in the BC membranes. I'm getting no flow error with this condo. I did replace the brushes in both motors and changed the BC membranes just in case and I'm still getting the high condo. I've ohmed all the valves and they're all reading good right now. Condo on the post cond cell on the debug screen is between 19 and 20.
I'm going to walk away right now as this isn't my clinic (a group of us are covering it for someone on medical leave) and some of the test equipment I need is missing. I'll bring back what I need tomorrow along with any spare parts I can think of that he doesn't have here. Any suggestions are appreciated.
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stuff
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Posts: 240
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Post by stuff on Sept 2, 2022 11:55:36 GMT
Have you tried connecting to jugs or this on a loop? You say you changed brushes but did you check the pressures again on both motors? I would also check the amount coming out of drain and make sure that is what the dialysate flow is at. Things might be running just enough to not cause a flow error to appear
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Post by gnurk on Sept 2, 2022 12:14:49 GMT
cond at 17 you are not pulling enough water in check V30, inlet pressure, loading pressure, V41
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Post by Retiring soon on Oct 10, 2022 14:39:30 GMT
I am having a similar issue. I have T machine that completes alarms/pressure test but the conductivity takes for ever to come down. Most complaints are during shift change. Any suggestions
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Post by gnurk on Oct 11, 2022 10:52:43 GMT
insure that the flow rate is not set to 300 have it set to 800
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Post by dave74 on Oct 11, 2022 14:27:58 GMT
I am having a similar issue. I have T machine that completes alarms/pressure test but the conductivity takes for ever to come down. Most complaints are during shift change. Any suggestions I had a K machine do this. Most machines do it a bit, but this one was extreme. This machine was also slow to respond to changes in dialysate flow. If the flow was increased, the conductivity would be low but would eventually stabilize. If the flow was lowered, the conductivity would be high but would eventually stabilize. Replacing the hydroblock solved the problem. I don't know about the hydrochamber. |
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Post by dave74 on Oct 11, 2022 14:45:30 GMT
Most of the time it is a flow error because the acid pump keeps pumping but there is no or not enough water. Is the acid pump pumping at a normal rate? Does the volume of the strokes seem normal? Another time I saw it was when somebody turned on the loop rapid to flush air out of the acid loop and the acid connector was still attached to the loop. The loop pressure was obviously very high.
I am trying to think of any scenario where the acid pump could fail in such a way that acid from the loop could go through the acid pump without being pumped. You could check that by using a concentrate jug.
That is all I have.
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Post by justabiomed on Nov 3, 2022 13:50:09 GMT
Check for a mechanically failed valve 26. Also pt 9 and 10. Do you have flow at drain? Flow in rinse? And the infamous Diasafe
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