Wed Jan 25 2023

Overpressure going way over max

During the overpressure verification test, the relief valve doesn't open way past the max threshold of 325 mmHg for adult and only gets triggered at 335 mmHg. Same with neonate, doesn't open at max threshold of 165 mmHg and only does at 180 mmHg. Is there a way to fix this?

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Wed Jan 25 2023Reply from Bill L.
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I'm not sure, but if your pressure readings are accurate (PT1 and PT2 are reading correct values), I'd guess it's the release valve not opening properly, but it could the main board not signaling it on time. I could be wrong, but I'd try a new pnuematic kit first (especially if the unit is old) and then the main board. 


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5 days agoReply from teempade04
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Overpressure of PV-01 may occur if the source (upstream or downstream in the case of back flow) pressure exceeds PV-01 design pressure.


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3 days agoReply from JanGC
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I have a total of about a dozen of these and I have tried 5 of those and so far all of them are all doing the same thing. Granted they are all old units. Putting in new pneumatic kits in all of them seems a bit expensive and time intensive. Is this common for these units when they get old or is there a way to recalibrate it?


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