H machine,non-olc,fails "Get Neg TMP".we're use to seeing,"fails neg.stablize" and/or "fails neg.flow on",but this is a first.anyone with help,thanks,mike

mjpc,

Check your UF pump seals and springs along with replacing the UF check valve. They are the most likely causes.

quote:

Originally posted by mjpc:
H machine,non-olc,fails "Get Neg TMP".we're use to seeing,"fails neg.stablize" and/or "fails neg.flow on",but this is a first.anyone with help,thanks,mike

Have you looked at de-air pressure. Maybe the brushes.

What is youir degas pressure not good degassing causes excess air in the system.

Check your machine around the UF check valve and the UF sample port when it is going through test and make sure you dont see air entering there. Sometimes those UF sample ports are the cuplrits as well. Check your Hanson connectors too. If theyre not on good or your O-Rings are bad then that might be the cause of your problem. Basically your machine cannot create negative pressure so my guess is there is a leak somewhere around the UF. Either that or the extreme case that you might have a bad transducer and its not detecting the negative pressure or a bad sensor board.