Electronics Forum | Wed Aug 22 16:11:15 EDT 2007 | razor1
If the problem appears to be random... we had a similar problem. We found that the belt which feeds the PCB through the reflow oven would jump or lurch ahead. It was barley noticeable but if you have identified the frequency and time of the compone
Electronics Forum | Mon Sep 14 21:31:33 EDT 2020 | dwl
Does the flickering go away once the oven reaches its set temperature? It will draw a lot more current while its warming up then when its running. Are your lights running on one leg of the same 415 VAC circuit? Reflow ovens are mostly resistive loa
Electronics Forum | Mon Dec 03 14:49:23 EST 2018 | dleeper
Are they getting stuck inside the oven or at the very end? If thermal expansion is the problem the boards would be getting stuck in the reflow zone since that would be the hottest and therefore the point where thermal expansion would be the greatest
Electronics Forum | Mon Nov 06 17:11:23 EST 2006 | gregcr
Hi All, I have vendors and even customers telling me that to properly run RoHS compliant products I should have ovens with more zones than my Heller 1500's. I have been running RoHS compliant product with these with very good results. So what ar
Electronics Forum | Fri Nov 10 17:00:05 EST 2006 | darby
Yep. If speed is not an issue a Heller 1500 will pretty well do you fine unless you are trying to process a brick. A Heller 1700 will not give you any more heated length, so don't get sucked in to that one. However, they are a little more fun to pl
Electronics Forum | Sun Dec 05 22:43:27 EST 1999 | dreamsniper
Charley, Though my reply is quite late, it might be a good info for you and i hope that this info could help or could provide you some views. Some companies practice at least 1 board gap, which means the length of the pcb you are currently loading,
Electronics Forum | Wed Jan 05 17:56:26 EST 2000 | Dave F
Glenn: Greg's comments about Heller ovens are well taken. Heller sells more ovens than anyone. Beyond his and others general comments, you should be aware of concerns about buying used equipment. Suggestions are: 1 Check the temperatures of conc
Electronics Forum | Wed Jan 05 16:21:17 EST 2000 | g cronin
hi glenn i have had nothing but good experiences with Heller. As far as i have seen they have very even heat characteristics, great profiling and overall low maintenance. I am very happy with heller and they are my oven of choice right now.. greg
Electronics Forum | Wed Jan 05 14:21:27 EST 2000 | Glenn Burson
I have the opportunity to pick up a used 1998 Heller 1900WN reflow. I have no experience working with Heller reflows, nor have I heard much about them, so I don't know if they are good quality machines or not. I have concerns about issues such as z
Electronics Forum | Fri Sep 16 19:46:55 EDT 2011 | jlawson
I have seen this on Heller1707 machines also for LED devices. The same job was run on anthoer brand oven (Rehm) and no issue. I think Heller Blower velocity can be a little on higher side as is a low inertia heating system and they have to make up f
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