Flux drop on surface of PCB

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Dear, Now we have some problems related to flux inside Refl... - Sep 20, 2017 by Tamkun

Does anyone have idea or guideline? Does anyone in same sit... - Sep 22, 2017 by Tamkun

Check your exhaust points and cooling zones. Cooling zones s... - Sep 25, 2017 by Evtimov

Tamkun

#78900

Flux drop on surface of PCB | 20 September, 2017

Dear, Now we have some problems related to flux inside Reflow oven (Tamura oven, 7 zones). Flux drop on PCB so much. It has 2 kind of flux: wet and dry. We did maintenance cleanly reflow oven but it still happen. We are planning to test new setting of temperature by reduce temp' at pre-heat zones. More details please see in attached file.

If you have any experience about this matter, please let me know. Thank so much!

Attachments:

Flux drop on PCB.pptx

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Tamkun

#78924

Flux drop on surface of PCB | 22 September, 2017

Does anyone have idea or guideline? Does anyone in same situation?

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Evtimov

#78935

Flux drop on surface of PCB | 25 September, 2017

Check your exhaust points and cooling zones. Cooling zones should have filters that need to be cleaned and it is most probably where your problem comes from. In front(if you have two exhaust pipes) you might need a filter change as well.

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