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Re: resin pump problems [was: electronic scales]

Subject: Re: resin pump problems [was: electronic scales]
From: Miles McCallum <milesm@avnet.co.uk>
Date: Sun, 21 Nov 1999 14:57:05

Rowland & Wilma Carson wrote:

>
> >Problems I have found are:
> >bubble in the hardener line - normal
>
> Normal? Que? How often is this happening? What percentage of the
> stuff are you wasting in clearing bubbles?

2cc?

> And couldn't you pump into
> separate containers while clearing the lines so you could decant each
> component back into its reservoir?

yes

>
>
> Do you know how the bubbles get there?

something to do with keeping the resin warm -ampreg says that this is
normal - only noticeable in the feed line because its the only one with an
inverted U bend.

> Is it because the feed
> container level gets too low and air bubbles are sucked in? Or is the
> hardener more liable to develop bubbles when pouring, which then
> refuse to float out?

NO - see above

>
>
> And how big a bubble are we talking about? Does it fill the
> cross-section of the delivery pipe, for instance?

over a few week's inactivity... yes

M



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