Electronics Forum | Wed Nov 22 07:38:08 EST 2006 | realchunks
Try lowering your blower speeds on the bottom zones. Works as well and lowering temps but easier to control than balancing your delta T from zone to zone.
Electronics Forum | Fri May 15 17:50:12 EDT 2009 | dynamicsource
Btw, our's was bought in 2001. So basically they said that it is not covered anymore. But we were never told that they changed the condition, until we were claiming for the blower. But in page 143 of the manual, it states, "...terms of this warranty
Electronics Forum | Fri Apr 01 03:36:15 EDT 2011 | jlawson
Bother are valid choices, Rehm is better made(stainless steel tunnel, lower power usage, threepahes blowers etc) If can afford it would be better choice. From experience Hellers Specs are a bit flaky... But they both will solder PCBs.
Electronics Forum | Wed Aug 17 12:07:29 EDT 2011 | emeto
hi , we have Heller 1808 and I would say that is doing good job as oven. However for less than 3 years we had to replace 6-7 blowers. There are very nice machines in the market, but it really depends on you and how much money you are ready to spend.
Electronics Forum | Wed Sep 29 11:18:11 EDT 2021 | dontfeedphils
I've always had good experiences with BTU, without fail. I've also had fairly good experiences with Heller, although they do like to slowly die on you one part at a time (blowers, SSRs, etc).
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 | Fri May 15 15:09:03 EDT 2009 | pcbrookie
We recently added a 7-zone Heller, and have had a 5-zone Heller for quite some time. When the tech installed our new oven, we were told the new oven does NOT have the lifetime warranty on heaters and blowers. However, when we order parts for the ol
Electronics Forum | Wed Oct 19 00:28:59 EDT 2005 | KEN
Lets talk some facts here. I have 6 BTU VIP's. 29,000 combined run hours. Not one part replaced in 6 years of operation. NOT ONE across 6 sepearate machines! I have had up to 6 Hellers at one time. Do you know why they have a life time warranty
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
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