Electronics Forum | Mon Feb 04 10:17:39 EST 2008 | slthomas
Your oven no doubt compensated by reducing energy to your heaters so it might not be as bad as you think. I'd be more concerned about even heating than over heating. My opinion is that an out of calibration profiler result is better than no result
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 | Thu Jul 24 10:49:12 EDT 2008 | slthomas
100 CFM at each exhaust if you're using room air, 25 CFM/ea if you're using nitrogen (according to my manual...never used nitrogen myself) per their specified delivery rates.
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 | Mon Jun 10 10:12:42 EDT 2019 | assuredtech
What is the year, make and model of your oven? Are you running it with Upstream and Downstream (pre-reflow, post-reflow) conveyors? Is the qty of the product low, medium or high? What is the max process width of the oven? what is the max board with o
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 | Wed Sep 05 14:51:47 EDT 2001 | gdstanton
Well, it appears after running both a bare and populated PWB we were seeing flux exhaustion on the uBGA. The problem apparently resulted by a recent maintenance effort where the air blowers in the reflow oven were replaced. The blower replacement m
Electronics Forum | Thu Aug 27 09:18:57 EDT 2015 | fcmtechnician
Hi Don't know your reflow brand, but try to decrease the blower speed...is possible that air blow out the componets! For vibration, chain related issue, etc open your hood and start the oven in colder recipe with pcb inside! ( put the service key o
Electronics Forum | Mon Nov 01 10:44:03 EST 2004 | Denis
If you need to loook at lead free ovens then you owe it to yourself to look at Manncorp. You all know our name but did you know that for 30 years we have scoured the earth to bring you high quality low cost choices in SMT equipmenmt? Look at the ne
Electronics Forum | Mon Dec 17 12:26:17 EST 2007 | slthomas
In addition to what robqd3 said, just because you can set your oven to 300� C doesn't mean that (a) it's providing 300� C air, or (b) that your oven will survive the temperatures required to reflow your boards properly. Confirming (a) does mean pro
