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Post by maz9534 on Nov 30, 2022 16:11:44 GMT
Hello Everyone! I am having an issue with a Braun machine SW version 9.12 in disinfection. Total disinfection time is 33 minutes. With 24 minutes left the machine stops and then EP revs up to get PE negative. I will also get a low temp alarm during this time. When everything stops PE sits at about 20 and gets to -18 when EP is running. This will go on for about 10 minutes and then continue on like nothing happened. At 13 mins left the machine stops and then EP revs up to get PE negative again. PE, EP, and FPE have been replaced. The issue still persists.
Thank you for all your help in advance!
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Post by zombie on Nov 30, 2022 17:26:38 GMT
It's been noted that when calibrating PE you should do 4 max points -400, -100, -50, -25 mmHg +/- 10mmHg for accuracy and there is an offset for altitudes >1000m
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Post by maz9534 on Dec 5, 2022 13:16:46 GMT
Ok I will try that first.
Thanks!
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SrCusEngr
Full Member
Posts: 204
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Post by SrCusEngr on Dec 11, 2022 0:26:16 GMT
FYI: When doing the 5 point cal of PE the critical point is -24mmHg. The software is looking to insure that the degassing pressure does not go more positive than that number during disinfection. Insure you have the latest copy of the service manual. Why, if you have 18,000 hours on your EP, you are well beyond the recommended life expectancy of EP. Upgrading to 9.1B installs new software that doesn't look at the -24mmHg point DURING the disinfection.
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Post by dlmoore21503 on Dec 28, 2022 19:08:07 GMT
What was the fix for this? I am having the same issue Replaced EP pump repplaced and calibrated EP pressure sensor. Replaced VZ and VEB. I can watch the pressure slowly drop over time. The highest it gets is -66 in rinse out than in solution intake it drops to -30 than in circulation it slowly drops to around -15 takes about 5 - 7 minutes usually shuts down at around 24 minute mark.
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Post by maz9534 on Jan 4, 2023 16:38:58 GMT
What was the fix for this? I am having the same issue Replaced EP pump repplaced and calibrated EP pressure sensor. Replaced VZ and VEB. I can watch the pressure slowly drop over time. The highest it gets is -66 in rinse out than in solution intake it drops to -30 than in circulation it slowly drops to around -15 takes about 5 - 7 minutes usually shuts down at around 24 minute mark. I re-calibrated PE and the problem went away. I did the 4 Point cal -400, -100, -50, -25 mmHg +/- 10mmHg as zombie suggested. |
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