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Cleaning old built up flux residues from reflow oven

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#71941

Cleaning old built up flux residues from reflow oven | 11 April, 2014

Have an older reflow oven which I need to clean up collected flux residues from the chain, mesh, intake/exhaust areas, slides etc heavy brown dust, likely water soluble residues, lots of polymerized brown resin as well.

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JD

#71947

Cleaning old built up flux residues from reflow oven | 14 April, 2014

If you do a search on Reflow Oven Cleaning Fluid, you will find links to companies and chemicals that can assist you. I recommend that you contact one or more of the companies and discuss your needs and the paste you are using. They should be able to help you procure a cleaning agent for your oven. Vacuum out what is crystalized and scrape out what is not solidified before you go in with the chemicals. Expect it to take time and elbow grease to get your machine clean. You can probably get most of the contamination out, but not all of it.

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#71949

Cleaning old built up flux residues from reflow oven | 14 April, 2014

So, someone is going to get a chance to buy a nice and shiny oven, eh? Summary from my notes of old thread on SMTnet: Some people melt sugar and use that solution to clean cooked-on flux residue. Dissolve sugar into warm water, spray it on the area that you want to clean, let it work for a short while and then rub the muck off. If you want to do it the manual way: Just wet the surface, take a lump of sugar and rub, it won´t scratch aluminium but it´ll remove all the burnt-in flux. This works and the sugar left behind just rinses off with water. It works a lot better than the solvents we have. Try using Sprite instead of the hassle of melting sugar. Coke leaves a black stain.

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#71951

Cleaning old built up flux residues from reflow oven | 15 April, 2014

Interesting idea the sprite sugar/water mix....

I found a spray on BBQ cleaner which worked pretty well, but is a little sharp on the lungs!

Peter

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#71955

Cleaning old built up flux residues from reflow oven | 15 April, 2014

"the sprite sugar/water mix" becomes a solvent because the number of carbon molecules in the sugar chain is greater than number of carbon molecules in the flux residue chain. Er, something like that ...

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#72041

Cleaning old built up flux residues from reflow oven | 30 April, 2014

Sprite/Sugar as a solvent?!!

I want to clean my oven now!

In other words, this I GOTTA SEE.

Ain't chemistry great?

'hege

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#72042

Cleaning old built up flux residues from reflow oven | 1 May, 2014

I use Simple Green, works pretty well, although I use the concentrate and don't dilute it as is recommended, so it's pretty strong. I am going to try the sugar water though. I'm intrigued.

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#72047

Cleaning old built up flux residues from reflow oven | 1 May, 2014

Of course now I am really wondering if my own guts like the Sprite/Solvent... 'hege

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Reflow Oven

reflow oven profiler