Re: Regulating pump pressure

ross@xxxxxxxxxxxxxxxxxxxxxx (D. Ross) wrote:

>| With all due respect and given the fact that I am not an electrician
>| or an electrical engineer, significantly lower or higher voltage
>| supplied to appliances with somewhat specific voltage and amperage
>| requirements have a high failure ratio when neither of those
>| requirements are met. If nothing else, it shortens their lifetimes
>| darstically.
>
>Certainly true for electronics, and possibly for a rotary pump. What Randy
>is envisioning (I'm sure of this thanks to the new wiretap program:-) is
>running a vibe pump off a separate circuit from the rest of the machine (so
>that the electronics and heating element are unaffected), and adjusting
>voltage the small amount required to get from 10+ bars down to 8 or 9 bars.
>This would be a great, inexpensive tweak for unregulated home machines.
>Even if the vibe pump's lifespan takes a hit, it might be worth it.
>
>- David R.
>

With all due respect to Al, I do respect what can happen to electronic
stuff when you monkey around- just having purchased a motorhome I am
also aware of just haw scary it can be to have a "machine" running 120
volt appliances (on the generator) while the entire thing is insulated
from the 'ground' (earth). Yes, reaching for that door handle is an
adventure in itself! I have been tossed across a room and it is not a
pleasant experience.

<GUESSING>
Anyway, I would think that since a vibe pump is a half-wave, AC
electromagnet, running it on a slightly lower voltage would lengthen
its life. After all, by doing so actually causes it to work less hard
instead of harder. The load on the pump only increases with pressure
and so having it work with at the same half of 60CPS but with less
effort would be better for it. It will always work at the same speed
but with less effort- it is just a coil, after all. Since the coil
is no more then a wire-wound resistor, it would have a volt rating and
running it at a lower voltage would be like using an over-rated
resistor in a circuit, no? I am just applying what little I understand
about this stuff, but i sure-the-heck make it sound good, no?
</GUESSING>

And yes, David, your telepathic assumption is dead on. I was
envisioning building the device into the pump's supply so that only
the pump would be affected.

I have an old Dremel tool speed control out in the garage, but I would
think that a fan speed control would do the job as well, but I would
measure the frequency output first to be sure that it is full-wave...
I know for a fact that the Dremel control is and I have used it to
power some motors much larger than the Dremel as well.


Randy "...can you smell that smell?" G.
http://www.EspressoMyEspresso.com


.

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