And I thought you meant "they are all wet".
Ahne.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE)
Sent: Thursday, 24 August, 2006 12:35
To: [log in to unmask]
Subject: [TN] FW: [TN] water as a solvent
After sending this, Mr."it depends" sent me a message questioning my
lucidity. I said I never worked in that company, but to keep my comedy
enterprise solvent, I will explain.
The people must be bi-polar and if the water was it would be a great
cleaning medium( as opposed to the clairvoyant midget that escaped from
prison; small medium at large ), because I should of seen this coming, just
like when I had created the perfect solvent, but couldn't find anything to
keep it in.
Dewey
-----Original Message-----
From: Whittaker, Dewey (EHCOE)
Sent: Thursday, August 24, 2006 11:31 AM
To: 'TechNet E-Mail Forum'; 'Barmuta, Mike'
Subject: RE: [TN] water as a solvent
People who think that are what water should be to be effective.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Barmuta, Mike
Sent: Thursday, August 24, 2006 10:42 AM
To: [log in to unmask]
Subject: Re: [TN] water as a solvent
Hi Ed: I agree with you. Who in the heck said water is the best solvent for
cleaning PCB's?
It's recognized as a "universal" solvent because it has the ability to
solvate so many elements, compounds and mixtures. It is a great
decontamination agent on polar/hydrophilic materials.
However it is a terrible solvent when trying to remove non-polar/hydrophobic
residues. Obviously it requires a saponifier if you want to remove these
types of soils. Perhaps this is what they meant.
Regards
Michael Barmuta
Staff Engineer
Fluke Corp.
Everett WA
425-446-6076
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Edward Mines
Sent: Thursday, August 24, 2006 9:31 AM
To: [log in to unmask]
Subject: [TN] water as a solvent
I have to disagree with the assertion that water is the best solvent for
cleaning PC boards.
It may be good for many (or even most no clean fluxes) but water alone
will not touch various greases and oils including finger prints. Have you
ever tried to clean you hands
with water alone after changing the oil in your car?
I don't know the legal consequences of using traditional vapor cleaning
equipment or the current availability of effective vapor cleaning solvents,
but I do know that vapor cleaning with trichlor was very effective when it
was the industry standard. Other solvents will work too.
It is important to remove all oily residues (finger prints, mold release
agents etc) from PC boards prior to conformal coating - otherwise incomplete
coverage can take place.
Both MIL-I-46058 & IPC-CC-830 state that conformal coatings should be free
from voids, skips and other breaks in the coating.
Ed Mines
---------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per
day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information,
or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
Stay in the know. Pulse on the new Yahoo.com. Check it out.
This message (including any attachments) contains confidential and/or
proprietary information intended only for the addressee.
Any unauthorized disclosure, copying, distribution or reliance on the
contents of this information is strictly prohibited and may constitute a
violation of law. If you are not the intended recipient, please notify the
sender immediately by responding to this e-mail, and delete the message from
your system. If you have any questions about this e-mail please notify the
sender
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per
day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information,
or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
immediately.
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet
NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send
e-mail to [log in to unmask]: SET Technet Digest Search the archives of
previous posts at: http://listserv.ipc.org/archives Please visit IPC web
site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
