I have this one K machine that that keeps failing the Diasafe integrity test. We have tried the filter, o rings, tubing, and even per Fresenius the valve, no luck. All pressures are good, no leaks, and the machine passes autotest perfectly. Has anybody run into this and can offer some insight?

Thanks

Had this problem happen to a fellow tech once. Ended up being the wires leading to the valve from the distribution board. The cover on the distribution board had pinched the two wires together, with the cover on it failed, but with the cover off it passed. Hope this helps you out and let us know what you find.

Same thing happened to me. Wires pinched in distribution box.

I had a similar problem...I rebuilt my UF pump and while reinstalling the pump I pinched the wires going to the valve on the diasafe plus setup. The wires got caught between the UF pump and the machine frame. The machine would pass alarm and pressure tests but would not pass diasafe test.

I keep hearing about pinched wires happening at the distribution board. There are two things that can be done to stop that, one, don't tighten the 3 screws, particularlly the middle one, all the way down when you put the distribution board cover back on, and two, if you feel that you have to tigten the cover like you are torquing on an Indy 500 car wheel, then put a piece of tape over all the wires to hold them in place. I have seen some machines that are 15 years old recently and there are no pinched wires in them. And yeah, every now and then you do catch a wire behind the UF pump, but it does help to replace the cable ties and keep the wires bundled if you have to remove them for any trouble shooting. Definitely put cable ties back on when you unbundle the wires the first time on new machines to get at the flow and deair motor wiring. Cable tie those up seperately so that they don't get caught somewhere. I have never understood why those flow and deair motor wires are tied together with all the valve wiring from the factory, when they know that you have to remove that a year or so later.

i also do as stated. i re-route and rebundle with slack. i re-route the V43 wires to the other side so they out of the way. and in the distribution box, i snap off the majority of the little dividers with needle nose. they really aren't needed(seen a K box lately?,they stole my idea)

quote:

they really aren't needed(seen a K box lately?,they stole my idea)

Sue them.

Thanks, you got it. I recall a similar problem I had with a Balance chamber valve on a D machine. No wonder I forgot about it.

Thanks again