Electronics Forum | Mon Jul 27 20:26:44 EDT 2020 | kghadiya
Good idea DWL, "Umbrella" thing works to solve this problem temporarily. But do you think it will cause any damage to hitter or heat zone?
Electronics Forum | Tue Nov 21 13:25:25 EST 2006 | jax
Depending on Zone Temperatures, Belt Speed, and Board Density... Some Convection Ovens will drop Zone Temperatures faster than others. They recover by increasing Air Circulation. This can make parts fall off the Bottom-Side that otherwise would
Electronics Forum | Wed Feb 17 14:45:40 EST 2010 | dcell_1t
Is your oven adjusted correctly for temperature > and blower and conveyor speed? As far as blower settings it only has a Hi-Mid-Low setting (is a heller 1809), and we have been working with all at Hi speed since line was started (1.5 year ago). Co
Electronics Forum | Tue Nov 13 00:05:11 EST 2012 | eadthem
Typical problems with our heller 1707 EXL would be blower issues. We have almost replaced every blower on the top sense purchase. Fortunately Heller is very good about honoring there warranty on the blowers which is quite long, Might be lifetime not
Electronics Forum | Mon Jun 25 10:08:17 EDT 2007 | slthomas
I don't know much about Hellers other than the 1500 models which don't have blower speed adjustments (except for cooling), but with that much air flow I'd be worried about over working your heater elements. Have you checked in zone setups to see ho
Electronics Forum | Thu Aug 29 15:51:21 EDT 2019 | spoiltforchoice
&gt; If quality or Reliability is the key.... BTU, <BR> &gt; Soltec Vitronics..Rehm... If it is the money <BR> &gt; ...probably not these brands.....:) <BR> <BR> Well I
Electronics Forum | Tue Aug 13 10:09:10 EDT 2013 | dyoungquist
We have a Heller 1707EXL that we use for lead and lead-free production. It has both a mesh belt and edge rails. We run 90% of our assemblies on the mesh belt (leaving the edge rails wide open). I have noticed when profiling a board on the mesh bel
Electronics Forum | Fri May 15 21:39:48 EDT 2015 | jlawson
Reflow.. 1.Rehm (Germany) - Best in Class Best overall process stability heating system ( Alot of makers have started to copy there VX heating arrangement ). COnveyor chains can be a bit more attention in terms of maintenance on rehm , but if foll
Electronics Forum | Fri Dec 27 12:53:38 EST 2019 | rgduval
yeah...I never had airflow volume problems with Hellers. When I had to build the system I was referring to, we had an old Speedline oven, and the way it was configured if you didn't provide enough airflow to the outer cavity, the blowers would overh
Electronics Forum | Sat Dec 28 06:58:33 EST 2019 | kylehunter
> yeah...I never had airflow volume problems with > Hellers. When I had to build the system I was > referring to, we had an old Speedline oven, and > the way it was configured if you didn't provide > enough airflow to the outer ca
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