Electronics Forum | Tue Jun 21 16:03:33 EDT 2005 | jdengler
The 2 issues are: -1 Enough flow to keep all fumes from reaching people. -2 Consistent amount of heat removal to keep the temperature steady. If the 45 CFM is steady and keeps all fumes away from people all is well. Jerry
Electronics Forum | Thu Feb 07 13:04:50 EST 2008 | tonyamenson
Here is another visual. http://www.metacafe.com/watch/416435/computer_fan_generator/ Only issue with a PC fan is I'm positive that the blades will melt while enduring the heat of the reflow oven exhaust.
Electronics Forum | Thu Mar 16 14:15:54 EST 2006 | ratsalad
Well I honestly can't say that I have enough flow, so that's a good point. We don't have a flow meter or manometer on our reflow exhaust. How do you measure that? Or, is it just that you make sure your exhaust path is clean and the blower is wor
Electronics Forum | Tue Dec 17 09:21:39 EST 2013 | markhoch
In my experience, it depends on the city, county or state regulations. I've worked places where it is constantly monitored, other places where it's sampled. My current location, it isn't monitored at all.
Electronics Forum | Wed Dec 18 10:58:58 EST 2013 | davef
AVFM's advice is good. That you know how to say "Title V Permit," makes me think that you're going to need more permitting, rather than less.
Electronics Forum | Fri Jun 22 13:14:46 EDT 2007 | jmelson
Are you sure your units are correct? Is this in the exhaust duct or actually in the reflow area? 4000 FPM = 67 FPS or 45 MPH (73 km/H). I have no doubt such a wind would blow larger parts off the board. If this is only in the exhaust ducting, the
Electronics Forum | Mon Jun 22 16:04:04 EDT 2020 | cyber_wolf
Using steel/aluminum duct work causes a radiator effect. Our Heller's have flexible rubber tubing coming off both ends that feed into a T above them. Just measured them at 57C on PbFree Profiles
Electronics Forum | Wed Feb 28 19:34:34 EST 2024 | tey422
I have seen there is flux like stuff dripping off from the exhaust area of the reflow oven onto the board That would be the issue of poor maintenance.
Electronics Forum | Wed Feb 14 15:37:48 EST 2018 | cbart
Do you mean in a reflow oven or wave solder? if so check your exhaust blower, make sure its still drawing. if not the flux/dust that builds up on the exhaust pipes may be falling into the machine.
Electronics Forum | Wed Aug 14 11:34:24 EDT 2002 | carln
Is your exhaust duct connected to a reflow oven that is used for flux? The condensate may be carring over from another oven that shares the same duct.
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