Steve and fellow techies - sorry for this delayed reply.... and Happy New
Year.

If you have an in-line system with a good extended wet isolation between the
wash and rinse tanks, then you ought to be able to run both chemistry (from
the wash tank) and pure water (from the rinse tank) successfully - ie both
processes. So long as you can switch off the wash section and "isolate" it
from the wet iso and rinse section.

Ergad - does that actually make sense?

If it will help you, I have some cleaner plumbing diagrams that might help -
let me know.

Regards,
Graham Naisbitt

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WEB: http://www.concoat.co.uk

CONCOAT Ltd
Alasan House, Albany Park
CAMBERLEY GU15 2PL UK

Tel: +44 (0) 1276 691100  Fax: +44 (0) 1276 691227
----- Original Message -----
From: Stephen R. Gregory <[log in to unmask]>
To: <[log in to unmask]>
Sent: 07 January 2000 02:36
Subject: [TN] Cleaning Strategies...


> Hi ya'll!
>
> Just brainstorming a bit...when you have two different flux processes,
what
> do ya'll think makes most sense, have two different and separate cleaning
> systems, or have one system that will cover both?
>
> Precisely; we do both RMA and water soluble, and have two different
cleaners
> here... an Electrovert MCS-1000 for our RMA boards (which is basically a
> fancy batch cleaner) , and a old Hollis Polyclean for our water soluble
stuff.
>
> I'm thinking that if we had the type of cleaner that would cover all the
> different types of residues would be more cost effective than having two
> separate cleaners. Sure, there would be saponification used (or some other
> type of process to clean RMA residues that wouldn't be necessary when
> cleaning water soluble flux residues) but still, wouldn't that make more
> sense than trying to support two separate cleaners?
>
> Does anybody else do this? Do any of ya'll use one cleaner that does it
all?
> Is it cost effective? I know it depends on the percentage of boards that
are
> RMA vs. water soluble...I would estimate our percentages are about
> 50/50...with the percentages increasing towards water soluble...don't
think
> that we'll ever consider no-clean anytime in the near future, it's just
the
> nature of our business...
>
> As usual, thanks ya'll!
>
> -Steve Gregory-
>
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