Is this the result of flexible manufacturing or product restraints
stretched to the limits?
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
Sent: Tuesday, April 15, 2008 10:01 PM
To: [log in to unmask]
Subject: Re: [TN] Defects related to water wash

Use a flat rubber band. Just to stretch the band, put the board under it
and 
let the band  go back, pressing the board against basket.  You have to 
replace the rubber band frequently, depending on what cleaning agent
you 
use. We also have baskets with a simple cover, that locks the board.
Inge


----- Original Message ----- 
From: "Ken Bloomquist" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 16, 2008 8:05 AM
Subject: Re: [TN] Defects related to water wash


> Hi Everybody,
>
> I've been away from the TechNet for a while but it's good to be back.
I'm
> now working for a wonderful EMS on beautiful Whidbey Island,
Washington.
>
> Carl, you hit on a subject that we are addressing right now. We use
metal
> wire mesh baskets to transport assemblies through our wash. We
experience
> damaged SMT parts from time to time such as chipped caps or missing
parts.
> We believe that it is from the water pressure and air pressure
bouncing 
> the
> boards around and banging them into the wire mesh.
>
> We are evaluating several different ideas but haven't found the best
fix
> yet. I'll be interested to hear if other TechNetters have this problem
and
> if so how they've solved it.
>
> Best regards,
>
> KennyB
>
> -----Original Message-----
> From: Ray, Carl (GE EntSol, Intelligent Platforms)
> [mailto:[log in to unmask]]
> Sent: Wednesday, April 16, 2008 7:48 AM
> To: [log in to unmask]
> Subject: [TN] Defects related to water wash
>
> Does anyone out there have any information or data related to defect
> rates for components after water wash processes? Some obvious
components
> such as switches, speakers and similar devices that are exposed to the
> wash is a given to expect failures. The concern we have is with other
> types of components.
>
>
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