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January 2017

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From:
"Weller, Tim" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Weller, Tim
Date:
Wed, 25 Jan 2017 17:11:24 +0000
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Bob,

We used to use a Lonco 446 saponifier back when we assembled our own circuit boards.  Now outsourced.

Tim

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Robert Kondner
Sent: Wednesday, January 25, 2017 9:43 AM
To: [log in to unmask]
Subject: Re: [TN] small aqueous wash system

Ken,

  That I do not remember, we got out of self-assembly in about 1998 as we moved from THT to SMT. I only recall we were buying it from a company based in Florida and they were purchase by a major player. I just do not remember the material.

The company "Longo" seems familiar but that could be completely wrong.

We also ran at a very low concentration. The controller did not use the sump heater so we ran at a low temperature, we turned up the hot water heater and ran with that. So I could imagine the that helped prolong gasket life. But a failed gasket is not a serious issue, plenty available at low code.

Bob K. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kenneth J. Wood
Sent: Tuesday, January 24, 2017 4:35 PM
To: [log in to unmask]
Subject: Re: [TN] small aqueous wash system

Robert,
What solution were you running in it?
Ken

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Robert Kondner
Sent: Tuesday, January 24, 2017 6:12 PM
To: [log in to unmask]
Subject: Re: [TN] small aqueous wash system

The Hobart pump and gasket lasted 10+ years. The parts that fails were the small plastic hoses to the chem feed pump. These last about 2 years and were replaced with tubing available at Home Depot. 

Give my experience I would strongly recommend trying an industrial or even commercial washer. If you can blow off free water you will find the amount of dissolved solids remaining is incredibly small. You should easily pass surface ionic tests.

Given the low cost you probably want to avoid all the "Dr. No" suggestions and simply verify yourself. 

Bob K.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Tuesday, January 24, 2017 3:00 PM
To: [log in to unmask]
Subject: Re: [TN] small aqueous wash system

Joyce is absolutely correct, and may I add that the pump hoses must be able to handle the saponifier and the circulation hoses must be able to handle the flux, saponifier, and everything else that goes through them, and an industrial dishwasher may not be able to handle those chemicals.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo
Sent: Tuesday, January 24, 2017 3:26 PM
To: [log in to unmask]
Subject: Re: [TN] small aqueous wash system

what ever you do, don't get a industry dish washer... the gasket is not intend for sponifier and other chemicals (like flux residue).
jk
> Hi all, is there such a thing as a small aqueous wash system for PCB 
> assemblies?
>
> I do a lot of prototypes / small scale production runs here and would 
> love a small wash system.
>
> Thanks
> Ken
>
>
>
> ________________________________
>
>
>
> Saturn PCB Design, Inc.
>
> Kenneth J. Wood
>
> Phone: 407-340-2668
>
> email: [log in to unmask] <mailto:[log in to unmask]>
>
> www.saturnpcb.com <http://www.saturnpcb.com>
>
>
>
>
>
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