Ok, Ok I get it, I will never, Never, NEVER, EVER dump my waste solder paste
into my wave solder pot!
Thank you all for the rapid response!
KennyB
-----Original Message-----
From: Stadem, Richard D. [mailto:[log in to unmask]]
Sent: Thursday, April 02, 2009 12:15 PM
To: [log in to unmask]
Subject: Re: [TN] Solder Paste In the Solder Pot
And never, ever clean your wave solder machine by giving it an alcohol
bath while the solder pot is turned on. That also makes things go BOOM!
in the night.
-----Original Message-----
From: Stadem, Richard D.
Sent: Thursday, April 02, 2009 2:12 PM
To: [log in to unmask]; Stadem, Richard D.
Subject: RE: [TN] Solder Paste In the Solder Pot
Let me add this. Don't ever put anything in a wave solder pot except
small cut-up chunks of bar solder, solid core wire solder (fluxless),
very small amounts of tin or lead to bring the alloy within
specifications, and anti-oxidant powder, if used.
And you shouldn't do that without all of the necessary PPE, including
full-body leather apron, leather gloves, protective head covering with
face shield, and shoe covers. It's also a good idea to wear a face mask
to prevent lead dust from being inhaled.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Thursday, April 02, 2009 2:03 PM
To: [log in to unmask]
Subject: Re: [TN] Solder Paste In the Solder Pot
NO! Don't ever do that. Not only will it not completely burn off, but it
can explode and the flux will also catch on fire on top of the solder in
the pot. This starts a chimney fire in the chamber and the exhaust stack
above it that cannot be extinguished without a special extinguisher
system that resides inside the stack. The stack is typically lined with
flux residues that are extremely difficult if not impossible to
extinguish.
That is why any equipment containing a large amount of molten solder
must have the exhaust blower hard-wired to the solder sump heater
switch. If the pot gets up to 500 deg. F. without any exhaust, the heat
will start a chimney fire. The exhaust has to be sufficient to prevent
that from happening.
Most localities are fully aware of this and make it part of the building
code requirements. It is also standard boilerplate language in any wave
solder machine maintenance manual.
And no, it never happened to me. I saw it happen at a CEM where I was
working as a consultant many years ago. The entire building burned down,
and about 85 people lost their jobs.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jerry Dengler
Sent: Thursday, April 02, 2009 1:48 PM
To: [log in to unmask]
Subject: Re: [TN] Solder Paste In the Solder Pot
Hi Kenny,
It will make a heck of a mess. The flux in the paste will not
completely burn off and leave a tar like substance on top of the solder.
Jerry
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ken Bloomquist
Sent: Thursday, April 02, 2009 2:43 PM
To: [log in to unmask]
Subject: [TN] Solder Paste In the Solder Pot
I have what I hope is a generic question without getting into too many
details.
IF the flux in the solder paste and the flux in the wave solder are
compatible and they are both 63/37, can unused, expired shelf life,
solder paste be dumped into the wave solder pot?
Thanks,
KennyB
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