On Fri, 16 Jun 2000 09:21:52 -0400 Lee Whiteman <[log in to unmask]> writes: > I can fully appreciate your concern about the quality of water. At a > location that I worked in, our water supply was stopped due to a > high > concentration of fecal matter (true). I can only image what the > ionic > contamination data would have been if we did not filter the "city" > water. > > Whenever I had the opportunity, I always put a DI water treatment > system > upstream of the aqueous cleaning systems. Where I suspected the > quality of > the water into the DI water treatment system, I would put carbon > filters > upstream of the DI water treatment system. Therefore, I know the > quality of > the water going into the aqueous cleaning system. This measure would > protect > the aqueous cleaning system's filters, which could then concentrate > on > removing the board residues from the water. Even a closed loop > cleaning > system's filters would degrade much quicker if the quality of water > entering > the system is poor. Like the term, GIGO - Garbage In, Garbage Out. > > From reading the E-Mail's from Jean-Francois Bissonnette, Mike > Fenner, and > Frank Asbell, I suspect that we all have been burnt from using poor > water in > our respective aqueous cleaning processes. > > Lee Whiteman > Senior Manufacturing Engineer > ACI / EMPF > Telephone: (610) 362-1200; Ext. 208 > FAX: (610) 362-1290 > E-Mail: [log in to unmask] <mailto:[log in to unmask]> > > > > -----Original Message----- > > From: TechNet [mailto:[log in to unmask]]On Behalf Of Franklin D > Asbell > > Sent: Friday, June 16, 2000 6:57 AM > > To: [log in to unmask] > > Subject: [TN] Board cleaning > > > > > > Having been involved in waste treatment in the past, I often > requested > > water analysis of the 'city' water pumped in to my facility. In > that > > medium size town in Texas, I had seen in the past elements within > their > > report that would have violated my discharge permit. > > > > Keep in mind the most common chemical used in water treatment is > > chlorine. Now you clean a board with only 'city' water and you're > > leaving chlorine in some form all over the blasted thing. > > > > So what happens when these chlorine crystals meet up with some > current > > and a wee bit of moisture...well they don't sit around talking > about the > > good ol days I can tell you that... > > > > Just something to think about... > > > > Franklin D Asbell > > Network Circuits, Inc. > > Irving, Texas > > > > ############################################################## > > 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 > > ############################################################## > > > > ############################################################## > 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 > ############################################################## ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - there's no risk! For your FREE software, visit: http://dl.www.juno.com/get/tagj. ############################################################## 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 ##############################################################