Electronics Forum | Wed Jul 23 18:25:12 EDT 2008 | shanenaturalpoint
I just purchased a used Heller 1500 reflow oven for an SMT line that I am ting up. Looking for the CFM requirements for my exhaust venting. Does anyone out there have any information on what the minimum requirements are for pumping this exhaust out
Electronics Forum | Wed Aug 06 23:32:19 EDT 2008 | darby
It SHOULD be written on the machine. I have had/have 1500 Hellers that range from 60cfm to 500cfm Check the fine smtnet archives. http://www.smtnet.com/forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=8859&#Message35065
Electronics Forum | Tue Jun 21 13:41:39 EDT 2005 | Rob
Hi, What will be the effect in my soldering if my Reflow Oven's Exhaust system is not properly extracting air from the chamber. Recommended is 100 CFM but I am measuring 45 CFM. thanks,
Electronics Forum | Tue Jun 21 13:55:47 EDT 2005 | ??
i dont think it causes and soldering effects but i do believe that the fumes will escape out into your factory.
Electronics Forum | Sun Jun 26 10:24:24 EDT 2005 | richard
Hi What is CFM and how do you measure it? Richard
Electronics Forum | Wed Nov 23 15:02:38 EST 2005 | tglenn
We are using AIM WS300 solder paste and are experiencing excessive voiding on our BGAs. We have exhausted reflow profile alternatives and just can't beat the voids. Has anyone had success with this paste on BGAs? If so how?
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 | Tue Jun 21 14:15:59 EDT 2005 | tds
I have a self contained fume filtration system (for sale)for reflow ovens that will maintain your desired cfm. What I have heard from customer's is that there will be variations in your profiles thus causing some defects.
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 | Tue Jun 21 14:27:14 EDT 2005 | Dreamsniper
Defects will result, Your cooling rate is affected because the hot air is not circulated properly. Outgassing will appear and you'll have pin holes / blow holes, disturbed joint etc. Correct me guys if i'm wrong. Thanks
