In that case use "no-clean" for both and don't clean.

Brian

Roberts, Jon wrote:
> Comment, we use have several assemblies (CCAs) that stranded jumper
> wires (usually 26 AWG) are used on so water soluble fluxes (QA) can not
> be used during any of our processes. We due use the AIM NC 264, Jon 
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis
> Sent: Thursday, July 12, 2007 6:43 AM
> To: [log in to unmask]
> Subject: Re: [TN] No Clean flux residue after water wash
> 
> I don't know how many times it has been said here that a so-called 
> "no-clean" flux is formulated primarily so that the residues are as 
> benign as possible WITHOUT any cleaning process. If you choose to clean 
> them, the residues may be much less benign. Fluxes that are designed to 
> be cleaned are formulated to ensure the cleaning process is as easy as 
> possible. I do not advise mixing types on any one assembly because you 
> are negating that advantages of both. The easiest way round your problem
> 
> is to use a water-soluble flux for wave soldering (and reduce your 
> retouch rate at the same time!)
> 
> Brian
> 
> Tom P. Hummel wrote:
>> Fellow TechNetters,
>>
>>  
>>
>> We are experiencing a white residue on the solder side of some boards
>> after going through our wash system.  We are wave soldering the boards
>> on a SeHo wave solder machine using Aim NC-264-5 no clean flux.  The
>> boards have some additional components installed by hand using water
>> soluble flux/solder.  The boards are then run through our Aqueous
>> Technologies SMT series board washer.  When they complete the drying
>> cycle, there is a white residue on the solder side of the boards that
> is
>> very difficult to remove.  Has anyone else seen this residue from
>> washing a board after using no clean flux?  Does anyone have any
>> recommendations to help eliminate the residue?
>>
>>  
>>
>>  
>>
>> Thomas P. Hummel
>>
>> Carlton Industries Corp
>>
>>  
>>
>>  
>>
>>  
>>
>>  
>>
>>
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