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Nitrogen gassing ring

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#77071

Nitrogen gassing ring | 8 February, 2017

Hello to all,

I am using ersa versaflow 3 selective soldering machine, i am having problems with nitrogen gas ring contamination. How can i clean this rings,what do you use? Ultrasonic bath maybe?

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#77073

Nitrogen gassing ring | 9 February, 2017

what kind of contamination are you dealing with?

ultrasonic bath with IPA should do the work, if not, you can always try trichloroethylene (this is last option, its very hazardous)

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#77075

Nitrogen gassing ring | 9 February, 2017

Thanks for your answer, contamination in form of fine dust particles. I don't know why but i need to clean this rings one per shift. I will post some pictures tonight. This contamination is affecting the solder wave on the nozles, when i clean the rings the wave stabilizes. Maybe i need to oncrease nitrogen flow on this rings. This happens only on second and third pot, the first one is ok.

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#77079

Nitrogen gassing ring | 10 February, 2017

is it yellow dust? if yes, 1. you will probably need to clean whole pot. it sticks to walls of the pot and circulates trough alloy. 2. get your alloy checked, how much of unwanted metals/contaminants it has 3. try alloy refresh bars, there was a post about it on forum 4. try different flux

i hope this helps

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#77082

Nitrogen gassing ring | 10 February, 2017

I've been using the ERSA Versaflow 3/45 for 3 years. I've been changing the gassing rings and seals annually, but I'm going to a schedule of every 6 months. I blow my gassing rings off with compressed air. I also blow a little into the intake tube to the ring. Low enough as to not blow out the sealing rings. This works well with me. What do your regulators show for your nitrogen pressure. Minimum is 25. I run at 27.

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#77086

Nitrogen gassing ring | 10 February, 2017

Contamination color is silver dust, like ash dust from burning wood. The pressure of nitrogen is 27 and the flow is 0.3. Do you know where can i find some documentation about nitrogen and fluxing?

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#77093

Nitrogen gassing ring | 13 February, 2017

I would email Chad at ERSA and see what he might have to say, relating to your Versaflow. he's always been a big help to me.

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#77103

Nitrogen gassing ring | 14 February, 2017

I am posting some pictures of the conteiment, i am using lead free sac305 dolder wire and flux if 2005m

http://imgur.com/a/v7KYj

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#77106

Nitrogen gassing ring | 15 February, 2017

yep, thats it. you will need to clean the whole pot. I used some dishwashing wire and Kyzen, and then removed Kyzen residues with IPA.

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#77107

Nitrogen gassing ring | 15 February, 2017

The main problem is that we changed the whole pot 1 year ago. From where does this containment comes from?

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