Electronics Forum | Thu Apr 26 08:34:32 EDT 2007 | ck_the_flip
Pavel is right...Your Quality Group, customers, and Management will really appreciate Cpk's. We do Cpk's annually, or whenever a major mechanical change (motor, blower, etc) is made. Pavel is correct in saying that Cpk's on most modern convection o
Electronics Forum | Fri Sep 07 09:13:21 EDT 2007 | smtirl
Folks, we've recently upgraded to Heller MKIII reflow ovens with Gen 9 cooling units. We're running N2 atmosphere at 1000ppm O2 and Kester256 solder paste. We're seeing a big problem with flux residues building up in the cooling section of the
Electronics Forum | Mon Feb 22 10:01:01 EST 2010 | jtsyeung
Since the inductor is electro-magnetic, that means the device is composite of coil and ferrite metal. The inductor inside the reflow oven meets with blower motors which close to the inductor and generate magnetic field. With such conditions, Lawren
Electronics Forum | Wed Apr 21 14:32:52 EDT 2010 | remullis
These ovens maintain good profiling as long as you stay on top of maintenance. I had 4 150's and 1 125. The biggest headache is keep the plenums cleaned (very messy). Also the blower motors have been replaced a few times on them as well. If I were yo
Electronics Forum | Thu Apr 15 01:29:35 EDT 2004 | pyro747
Hello Everyone, I am having a pin chain speed problem. The speed of the chain will slow down after start up of the oven. Example if you set the conveyer to run at 41 in/min, as the oven warms up of conveyer will slow down phycally but won't chan
Electronics Forum | Fri Apr 16 10:34:29 EDT 2004 | kauer
A couple of questions for You. How old is this oven? Does it have a history of problems? When I have seen speed variations with our Omniflow 7s it is usualy the encoder but it usually spikes rather hard in one spot. You can see this physically and by
Electronics Forum | Fri Jan 21 19:10:49 EST 2005 | fastek
Allow me to re-state my response. Hours on an oven would be the last thing I would care about if I wanted to know something about it. There is no standard lifespan on heaters, blowers and the like. They can last a year or ten. Sure you can assume a 5
Electronics Forum | Tue Aug 11 18:44:22 EDT 1998 | Dave M
| Good day. We have just purchased a HOLLIS POLYCLEAN SMT Machine. We did not receive a manual and for installing the machine, we need the indications for the ventillation system: ie the number of CFM for the blower. | We would greatly appreciate i
Electronics Forum | Thu Sep 16 12:06:29 EDT 1999 | Scott S. Snider
| | | Hi, | | | | | | Can someone pls suggest to me the best reflow temperature setting | | | for a force air convection oven. The details is as follow. | | | 1) Heller 1700s | | | 2) 12 zone---6 top and 6 bot | | | 3) Solder paste --- Qualitek 691
Electronics Forum | Thu Oct 25 10:05:05 EDT 2012 | kz9yyc
Hello all, I am having difficulty with an OmniExcel 10 oven. Zone 5 upper will not hold setpoint = 165C (it typically runs ~10C higher). Here is what I know: 1. The machine is not turning on zone 5 heat when temp is too high. 2. Zone 5 lower is
