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ERSA Selective Solder questions

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We aquired an ERSA ECOSELECT 2 selective soldering machine. ... - Apr 25, 2013 by Dback  

#68741

ERSA Selective Solder questions | 25 April, 2013

We aquired an ERSA ECOSELECT 2 selective soldering machine. So we are going through a learning curve and I would like to hear from ERSA users on this subject.

The main concern is to keep the miniwave steady, it seems that it " bounces" a lot and is not consistent. We are using Nitrogen with a purity of 99.999%.

Nozzle ID is 2.5 mm, after doing a wave height test, it is erratic, so we have to compensate by adjusting the Z. This height changes from day to day and sometimes even during the same run. We have the wave hight set 40%.

Anybody else experienced this problem?

Thanks in advance for your input

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#68742

ERSA Selective Solder questions | 25 April, 2013

Hi,

I was using different brand machine but it will behave the same way as yours when it is dirty or clogged. Try to clean your nozzle and your supply mechanism(pump, propeller...) and you should get a smoother wave. Good luck!

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#68746

ERSA Selective Solder questions | 25 April, 2013

Evtimov, thanks for your reply.

Yesterday was our first day of running 99.999%. We were running for weeks with 99.99% Nitrogen purity and we just were having all kinds of problems with the miniwave not being consistent. We had a wave offsets at 75, 80%. And as soon as we switched to 99.999 the solder flowed so much better, that we had to decrease it to 30-40. So we are learning as we go, but I will definitely keep nozzles clean, as well as solder pot dross cleaning on the daily bases. ERSA users, any tips or advice are appreciated.

Thanks

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#68747

ERSA Selective Solder questions | 25 April, 2013

Evtimov, thanks for your reply.

Yesterday was our first day of running 99.999%. We were running for weeks with 99.99% Nitrogen purity and we just were having all kinds of problems with the miniwave not being consistent. We had a wave offsets at 75, 80%. And as soon as we switched to 99.999 the solder flowed so much better, that we had to decrease it to 30-40. So we are learning as we go, but I will definitely keep nozzles clean, as well as solder pot dross cleaning on the daily bases. ERSA users, any tips or advice are appreciated.

Thanks

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#68763

ERSA Selective Solder questions | 29 April, 2013

Do you watch when it is doing the wave height test? Watch it and see if it goes up to the same spot on the test probe each time. If the test probe is dirty sometimes the solder has to go up higher on it before it gets detected. You might actually be better off using the wave height test once a day.

Also I forget where exactly but there is an offset you can use for wave height, I remember changing it. But we might have stopped using the machines wave height test by that time.

Adipic acid is good for cleaning the nozzles btw. You will have to find a lab that will sell you a sample.

But the main thing is to watch when the wave height test is being done. If the solder just touches the probe one time then the next time it goes half way up, then you will get different wave heights. I think the nitrogen might have helped keep it cleaner.

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#68764

ERSA Selective Solder questions | 29 April, 2013

We have a Versaflow 40/50 and ours is setup like this.

We have out nozzle test position set so that in the Z axis you are 3.8mm away from the pin. Used feeler gauge

Then you can set your gradient per nozzle. Start with a number then do a wave offset, then take your wave height to 1%, the solder should be 1mm below the top of the nozzle. If not change number and try again.

We use 65% for the wave height and 60% when it does a test. For our 3/6 nozzle. Some larger nozzles are different.

Adipic Acid and a stainless steal brush will help keep the nozzle clean. Also get a brush to go down inside the nozzle with also help.

You should also get a long brush to go into the center of the pump when you clean the pot.

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#68777

ERSA Selective Solder questions | 1 May, 2013

Stephen, Bill,

Thaks for your input.

We are currently waiting for nozzles since the ones we have are badly oxidized. We do have a deoxidizing gel that we got from ERSA, not sure if it contains Adipic Acid, but it is what was suggested we used. Once we get our new nozzles we will try to stabilize the wave height using some of your suggestions.

By the way, are you using ERSA CAD 2 to create your soldering programs? Then edit them on Ersasoft? Have you ran into issues were flux lines or solder lines moved from their original program randomly?

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#68786

ERSA Selective Solder questions | 2 May, 2013

Kurtz had a guy that was great with the machine.

I strongly suggest that you watch the wave height test a few times in the morning then at lunch and at the end of the day. Look where the solder goes up to on the probe. If it doesn't work consistently you might want to turn it off, and check the wave height manually each day.

The way we programmed it was to get the co-ordinates from the gerbers using viewmate and entered them manually. The Ersa software we had didn't look useful.

Adipic acid is a white powder and we used it on soldering iron tips as well.

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#68866

ERSA Selective Solder questions | 8 May, 2013

Stephen,

We are now running with 99.999 N, New nozzles and our wave height has stabilized. I will look into the Apidic Acid to clean our nozzles.

Thanks for the input.

I am just amazed at the difference the nitrogen grade made to our process. Going from 99.99 % to 99.999 % was like night and day.

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#68968

ERSA Selective Solder questions | 16 May, 2013

Guys, thank you for your advice about Adipic Acid, it's an amazing!

In my country one small box of Hakko Pretinning Solder paste (FS-100) costs USD30, 1 kg of this axid costs USD5.5 .

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#69175

ERSA Selective Solder questions | 6 June, 2013

OK guys, we got our Adipic acid. What is the preferred methode of applying it?

a) Nozzle mounted, momentarily turn off wave and then brush?

Or b)coat nozzle with the acid then mount it and turn wave on?

By the way, we are using Indium flux WF-9945. Works well for us so far, with th exception of some outgasing in a connector. Any suggestions as far as flux?

Thanks in advance for your help.

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#69177

ERSA Selective Solder questions | 6 June, 2013

azhiker, for me I selected method A. But I don't turn off wave and apply acid directly to nozzle with solder.

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#69181

ERSA Selective Solder questions | 6 June, 2013

I used method 'A' but I leave the wave on. I use a stainless steal brush like 7248T13 on McMaster-Carr.com. This way I can apply the acid and scrub the nozzle. Another important part is get a small brush to push down into the nozzle to make sure you do not have any blockage, i.e. 7353T703 on McMaster-Carr.com.

Also it depends on what type of nozzles you are buying the ERSA nozzles are metal with a plating on them. We get our nozzles from a place called Pentagon EMS and they are a steal nozzle that is tinned. This way if we have a problem we can always use a light sand paper.

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#69184

ERSA Selective Solder questions | 6 June, 2013

Bill, ENIAC, Thank you for your input. I'll do some research on the items you suggested and give it a try.

The idea of having a steal nozzle that is thinned is defintely new to me, so I will check into that, as well as the brushes.

Thank you guys.

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#69185

ERSA Selective Solder questions | 6 June, 2013

Bill, ENIAC, Thank you for your input. I'll do some research on the items you suggested and give it a try.

The idea of having a steal nozzle that is tinned is defintely new to me, so I will check into that, as well as the brushes.

Thank you guys.

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#70557

ERSA Selective Solder questions | 28 August, 2013

i've a competitor selective soldering and i would like test the adique acide to clean the nozzle. How much do you use approximativemely to clean a 8/4 mm nozzle?

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#70577

ERSA Selective Solder questions | 29 August, 2013

You do not need much. We just take out pencil style stainless brush dip it in the powder and then scrub the nozzle.

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