Electronics Forum | Tue Dec 17 00:47:19 EST 2013 | tktak
What are the typical environmental regulations in the US for reflow exhaust if any? We are using a lead free process although I assume it has more to do with the flux than the alloys used. Do we need to look into something like a Title V permit?
Electronics Forum | Fri Dec 27 11:47:07 EST 2019 | slthomas
"We would need like a 8" diameter duct for 300cfm, which for exhaust purposes, is dead wrong" If you have 2 4" exhaust ports on your oven (some do, some don't), an 8" or larger main trunk might be justifiable, especially if you have another machine
Electronics Forum | Tue Jun 21 20:45:53 EDT 2022 | stephendo
Are you talking about in the machine as in the blowers? Or the exhaust? When CFM is an issue with an oven I think exhaust. With the blowers I check the oven with a profiler. I would think that the geometry of the heaters and oven would affect how m
Electronics Forum | Mon Jan 18 17:58:09 EST 1999 | marc p
| I have a severe problem with flux residue being drawn up the vent ducts of my reflow oven. This residue reaches a critical mass then begins to flow down the ducts and becomes very messy. I run a no-clean process and use IR oven. Has anyone else o
Electronics Forum | Sat Sep 12 10:46:46 EDT 1998 | Dennis B
We're installing our first SMT line and my boss asked me a question I couldn't answer right off the top of my head. I have been an SMT process engineer for about 12 years and I guess this just never came up before. I was surprised but it made good se
Electronics Forum | Tue Aug 13 20:57:01 EDT 2002 | davef
We don�t use this glue. What does Heraeus say about your condensate? [I'm With the previous poster. Your condensate sounds like goop from NC flux not glue.] How to clean out a 3 meter length of chimney? Depends on your tolerance for pain * Take
Electronics Forum | Fri Feb 15 15:55:58 EST 2008 | pjc
This is from the OmniFlo 5 Engineering data sheet: EXHAUST SPECIFICATIONS: STANDARD AIR OPERATION: - Load-end: 150 cfm (255 m3/hr) at the 4� (102 mm) stack (minimum requirement) - Unload-end: 300 cfm (510 m3/hr) at the 4� (102 mm) stack (minimum req
Electronics Forum | Sat Nov 03 10:57:27 EDT 2012 | davef
EricR: Regarding "*** By the way, since we have used the Tin-Silver-Copper lead free solder there has been a strange liquid type chemical leek from the oven exhausted pipes." ... I don't know anything about your process, but the first thing I'd inve
Electronics Forum | Thu Mar 14 13:31:10 EDT 2013 | sarason
I don't know your oven but I have dealt with high temperature ovens/furnaces before. These would be my thoughts. Change in the resistivity of the heating element due to aging. Blockage of air flow in the oven by buildup of soot/ debris in either th
Electronics Forum | Sat Jun 20 19:49:39 EDT 2020 | kylehunter
Hi all. We recently expanded our assembly space and moved our Heller 1500 oven to a new spot. In the old arrangement, we used a Purex filtration unit, keeping the hot air in our space. Recirculating the fumes caused a massive headache in cooling the
