It could be that the City water is pure enough not to need de-ionising and that your supplier
having verified this has decided that there is no need to stand the cost of a treatment
facility.... if the City water is from melted glaciers,  or the water is pumped straight from
reservoirs in granite mountains this could be true. Of course it could be that he hasn't and his
response will be along the lines of no one else has ever complained, One thing is for sure: he
was the cheapest bidder.

Mike


----- Original Message -----
From: Jean-Francois Bissonnette <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, June 14, 2000 4:21 PM
Subject: [TN] Boards Cleaning II


> Oups!, a little mistake here!  I suppose everyone understood but I
> correct anyway!
>
> JF
>
>
> -----Original Message-----
> From: Jean-Francois Bissonnette [mailto:[log in to unmask]]
> Sent: Wednesday, June 14, 2000 11:16 AM
> To: TechNet E-Mail Forum.
> Subject: Board cleaning
>
>
> Hi Technetters,
>
> I would like to know what is the standard practice for cleaning
> assemblies after soldering.  Our supplier uses water washable flux
> (337M) and uses city water to wash the boards after soldering in
> the following process:
>
> 1) Rinse
> 2) Drying
> 3) Wash
> 4) Wash
> 5) Drying
> 6) Rinse
> 7) Drying
> 8) Pre-Heat
> 9) Drying
> 10) Compressed air blowing
>
> Now I believe that the boards should be clean after such a process, but
> I'm worried about contaminants that could be found in city water.
>
> Am I paranoid???
>
>
> JF
>
>

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################