Electronics Forum | Mon Feb 04 09:42:57 EST 2008 | tonyamenson
I just discovered my reflow oven exhaust had no suction and I'm fixing it now. What I want to know is what happened to my process. FYI. The exhaust from my other oven was getting kicked back into the faulty oven because of this loss of suction. The
Electronics Forum | Sat Feb 08 04:49:09 EST 2014 | cspasol
Anybody know what is the standard CFM of HEXI reflow? Our reflow oven SF-820-LF has no exhaust fan. So from our facility what should be the required CFM.
Electronics Forum | Mon Aug 12 16:46:58 EDT 2019 | stephendo
"mostly an irritant" can be serious for some people. You can get other toxins from PCBs if you char them but you would have mentioned if they came out burnt. Was there any exhaust on the oven at all? I have seen it where we used a particularly stink
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 | Tue Jun 21 16:54:37 EDT 2005 | slthomas
I'm inclined to believe along with others that if you don't smell it, and the flow rate is consistent (hence, your profiles aren't suffering from fluctuations in temperature due to fluctuations in circulation) you're probably OK. It does beg the que
Electronics Forum | Thu Dec 26 17:21:18 EST 2019 | rgduval
If you're going to vent through a single exhaust/fan combo, I would recommend spending the money, and getting an HVAC company in there to size the exhaust fan, and duct work. It'll pay dividends for you in the future. We did that at a previous comp
Electronics Forum | Thu Feb 15 08:00:35 EST 2018 | cbart
Hi many thanks for your help, I mean reflow > oven. Ok, yes, it sounds like the debris that builds up on fans/heaters/ducting may be making its way onto you product. if the exhaust fan that vents your machine failed this could be the cause, or it
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
Electronics Forum | Tue Jun 23 01:04:26 EDT 2020 | kylehunter
Thanks for your thoughts. So it seems then that the temperatures that we're seeing aren't unusual, and just need to sort out the fan issue... @Sr. Tech: Yeah, totally understand the radiator effect. Once the fan issue is sorted, we plan on insulatin
Electronics Forum | Mon Jun 22 16:34:14 EDT 2020 | stephendo
What I have seen used are belt driven roof mounted exhausts. There would be a drum fan that is driven by belt and motor. That way the fumes never go over the motor or the belt. We would have to replace the belt every couple of years or so but then it
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