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Post by J R on Nov 6, 2023 17:51:05 GMT
So I am getting a "insufficient degassing" error during treatment. Everything else seems to be ok during the treatment. I've only seen degassing issues during disinfection so any thoughts? Thank you! PE sensor reads -3 during the alarm I have changed the PE sensor calibrated and verified also changed the filter after the VEB valve found no debris I have 2 machines doing the same running 9.1B software currently running both machines on a simulated therapy for 3.5hrs but no alarms yet on both machines....any thoughts??? Put a ticket on JIRA but they are stumped as well!!!
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Post by Guest68 on Nov 6, 2023 19:16:42 GMT
Check the condition of the FPE and FPA internal magnets. If they do not have the metal shroud around them then replace them. You may have to replace one or both pump heads if this does not correct the problem.
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Post by JR on Nov 7, 2023 16:12:27 GMT
All pumps are good, old trends show that the alarm happens when bicarb mixing ratio alarm appears, the bicarb cartridge is then changed and that's when the degassing insufficient alarm appears BUT I have run simulated therapies for 5hrs and cant duplicate the error even changed the cartridge midway and nothing. 2 different sources told me there may have been an interruption of incoming water but I am at a lost. Seems to only happen when a patient is connected to the machine I'm convinced
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Post by SrCusEngr on Nov 10, 2023 21:51:39 GMT
Guest88>> FPE/FPA are flow pumps and have nothing to do with degassing. The degas circuit is a closed loop.
JR>> Since your pressure is going from negative to 0, there are three possibilities. 1.) I think that you are getting air into the degas loop preventing the pump from creating a negative pressure. This is problematic, because air bubbles are already in the system from degassing. I would recommend removing the tubing where it leaves the water block (cap the connector or you will have a flood) and with a 30-60 cc syringe filled with water, pressurize the line going to EP. If you see water droplets anywhere or a fine spray (had one customer looking for his problem for two weeks - he did this and found a micro hole in the tubing in one minute. I won't repeat what he said over the phone), you found your problem. 2.) EP related. Does EP have a Rev L gear pump? If so, the magnet inside the pump may be cracked and not actually spinning the pump gears to move water. Test it by connecting a flow meter to the output (into a bucket) and set EP for 1000 RPM (To guarantee an output for measurement, connect the input to draw water from the same bucket). Your flow should be greater than 700 mL/min. 3.) The set screw for the external magnet became loose and the external magnet doesn't turn or turns just a little. with the motor turning at 2000 rpm , the external may only be rotating at 500 rpm which is not fast enough to perform degassing. Check magnet is secured to motor shaft.
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Post by J R on Nov 20, 2023 15:21:58 GMT
Thank You very much for the input, I changed and calibrated the PE sensor but that didn't do anything I found by looking at the trends right before the degassing alarm would come up the machine would throw a bicarbonate mixing ratio alarm once then go away and then within a few minutes the ratio alarm would pop up again this is with powder in the cartridge. I simply re-calibrated the bicarb pump and went ahead and did the acid pump as well doing this seem to fixed the issue so far I am 10 patients treatments in with no alarms present whatsoever.
I had another machine doing the same exact thing but changing the PE sensor and calibrating it fixed that issue
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