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Flux Residue on Heller MKIII

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#51693

Flux Residue on Heller MKIII | 7 September, 2007

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 process chamber.

Any MKIII users out there with the same issue????

Before the upgrade we ran for a number of years with Heller MKII ovens with Gen 5 cooling units. Main issue with these units was blower motors failing and rails warping. No major issues with flux build up.

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