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Re: [IP] no delivery alarms on MM pumps

I had the same question.  I wouldn't hink that air can increase the back
pressure, which is what the occulusion alarm is sensing.
As another oh-and-by-the-way, the operating pressure is one of the
differences between the Disetronic and MM pumps.  The MM works on a
lower pressure.  The Distronic is designed to try to avoid some of the
delivery problems by working at the higher pressure.

buddybarber wrote:

> Lee,
>     Please explain:
>  sometimes it's a large air bubble that has worked its way
> >into the nose of the syringe and blocks the insulin flow into the
> >tubing.
>     As I have said before I am just a mechanic but can't for the life
> of me
> figure how air will restrict this pumps forward motion and trip a "no
> delivery" alarm? That is what happens when you get a "no delivery
> alarm",
> the way I understand it, the pump has a preset pressure (as in
> hydraulics)
> that triggers the alarm. ?????? Just curious ??
> Buddy '-)
> ><email @ redacted>
> >Type I 25+ yrs - MM 507 pump - Humalog