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 | Tue May 25 18:43:48 EDT 2021 | jamesatqkits
Air flow was the issue, more CFM required then my compressor an deliver. I have to use 2 compressors, you can hear a set of contacts engage when pressure is applied and sufficient.
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 | 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 Jul 09 15:40:06 EDT 2019 | assuredtech
That's a great point about air consumption, don't reduce the 1/2 inch air line requirement, meet the CFM air requirement and of course dry shop air. Check the Auto oiler for the CTA is running correctly, 5W 30 NON Detergent oil only. Attached is a pi
Electronics Forum | Thu Apr 14 22:11:42 EDT 2016 | davef
Enough pluses and minuses to get things started are: * Mouse bites (+) boards can be irregularly shaped, no board redesign (-) no one knows how to seperate the things, requires layout consideration * Singulation (+) boards can be irregularly shaped (
Electronics Forum | Wed Jul 22 12:47:23 EDT 1998 | Earl Moon
| I'm trying to put together a set of design guides for use for new designers | in house or to be sent out for contracted layout work. I would like to start with a top ten list of things that will go wrong if rules aren't available. For example testp
Electronics Forum | Thu Dec 27 12:39:55 EST 2012 | nor
Requirement on PCB fab drawing states "PCB must meet requirements of PS-125 and PS-129". What is this requirement?
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.
