quilla
New Member
Life is Good.
Posts: 25
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Post by quilla on Oct 26, 2022 16:57:32 GMT
Folks,
I have a 2008T machine which passed the negative pressure test intermitting. both dearation and flow motor brushes are fine. Also calibrated dearation,loading and flow pump pressures. Any thoughts. Thanks
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pacnw
Full Member
Posts: 187
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Post by pacnw on Oct 26, 2022 19:25:26 GMT
check your Hanson hose O Rings and UF sample port to make sure it's tight. Then zip tie all hoses on the air separation chamber.
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Post by MicroTone on Oct 26, 2022 19:48:36 GMT
Any small leak can cause this... I would rinse for a few times and grab a flashlight if pacs ideas don't work
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Post by gnurk on Oct 27, 2022 12:08:25 GMT
do an induced positive pressure test let it run 5 minutes or so then check for leaks, also do a negative pressure test and using a flashlight check for bubbles
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Post by jaretac on Oct 27, 2022 12:16:46 GMT
What I do is a manual positive pressure test. Put the machine in dialysis mode, clamp the drain off valve 44 and then unplug the air separator. The machine will think there is air and start a filling program which will jack the pressures up and anywhere that could be sucking air will start leaking water. Air separator itself is always a hot spot.
What about loading pressure valve? Is it squeaking at all? During cleaning programs? If so replace and recalibrate. This can cause negative pressure to fail.
Not sure of the age of the machine but the pump head can be a factor as well. Keep in mind that like how the deaer motor gets used more than the flow motor, the deaer pump head gets used more the the flow pump head and is the most likely spot to fail of the two. Try watching your debug screen when going through negative pressure, then swap the pump heads and watch again. This is not 100% but if the pump is just starting to fail (hasn't completely failed) it will often work fine as a flow pump. If this corrects it then you know you need a new pump head.
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phillipashleyludlow
Full Member
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Posts: 151
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Post by phillipashleyludlow on Oct 28, 2022 20:57:38 GMT
id throw it in heat and listen to your loading pressure valve, just my opinion.
edit: nm apparently i skimmed over jaretec saying that.
*beats horse again*
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quilla
New Member
Life is Good.
Posts: 25
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Post by quilla on Nov 1, 2022 13:37:06 GMT
Folks,
thanks to all of you for your posting. Now it is my time to let you guys know that the problem was the Air Separator little line at the bottom which has a tiny leak. I tired up and now the machine is fixed.
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Post by gnurk on Nov 2, 2022 12:04:47 GMT
thanks for posting your fix
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