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February 2004

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Subject:
Re: Cleaning Chemistry
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 18 Feb 2004 09:36:18 +0200
Content-Type:
text/plain
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text/plain (52 lines) 
Yes, I designed a batch cleaning machine specifically for Vigon. The
important thing is to keep the filter circuit pump running 24/24 or, at
least, several hours after use. The disagreeable part is changing the
filters because the saponifier solution is quite alkaline and the spent
filters are hazardous waste. I recommend you have 2 sets of filters and
a pair of 3-way valves, with a pressure gauge on the pipe between the
pump and the valve, so that you can see when a filter is becoming
clogged. I did toy with backwashing the filter but I don't think that
this would make much difference.

When discarding used Vigon solution, remember that it, too, is alkaline
hazardous waste, containing heavy metals and toxic hydrocarbons. If sent
to a specialist company for disposal, the containers must be
appropriately labelled.

The Vigon itself worked well with some fluxes and pastes, but not all.
As with all processes, qualification of the flux/paste, in conjunction
with Vigon, **under YOUR particular conditions of use**, is essential.

Brian

Dehoyos, Ramon wrote:
>         Hi Yo'all:
>                 One of our board vendors has changed their cleaning agent to
> Vigon A 200 for their in line cleaning. Their in line cleaner is an
> Electrovert Aquastorm. Does anybody have any experience with this agent?
> Vigon A 200 is suppossed to be good for medium to high pressure.
>                 TIA.
>                 Ramon
>
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