After about 6 weeks working with these pumps we have noticed a possible problem. There appears to be an intermittent fault with up-stream occlusion. For no apparent reason the pump will fail up-stream occlusion, go into pause state awaiting the user to first accept the fault condition by pressing OK to silence the pump allowing quite time to assess what is wrong. Once sorted you should be able to just re-start the infusion. This is the problem area. For some reason it intermittently stays in the fault state and you can't recommence with the infusion. The quick fix is to open the door, close it and from there recommence with the previous therapy set. But even that takes 47secs to accomplish (not really a quick fix). You can imagine with trying to run inotropes through these pumps (I do appreciate not all areas use volumetric’s for this task) it causes a major problem. The company have been very pro-active in trying to assess what is wrong and I have to praise them for that. So my question is has any one else come across this problem? DD