[volt-nuts] Now Pace desoldering maintanance question

[Fred Schneider]

I have a dot of steel wol ( is that english ? ) before the felt filter ( inside the glass tube) that works great. The felt stays clean and the tin does not fill up the steelwol ( fine metal wire what looks like wol, the fur of a sheep, it is used for polishing and sanding). Now I only have to open the tube, the old tin drops out and thats it.
I have a mbt250 here is the picture http://www.pa4tim.nl/?p=2468 this in case the alcohol thing is not for all models ;-)

Fred PA4TIM

Op 7 nov. 2011 om 14:53 heeft Chuck Harris <cfharris at erols.com> het volgende geschreven:

> Agreed, the filter won't pass liquid at a reasonable flow rate, so it
> should be removed for cleaning.  The filters can be cleaned with alcohol
> and a little compressed air to dry them (low pressure), though.  I clean
> and reuse the felt filters many times too.... and when they are too far
> gone, I replace them with a cotton ball.
> 
> The exhaust ports on my pace units seem to seal ok.  They are designed
> to leak as a way of adjusting the output pressure.  When they are full
> on, they should be sealed.... should be isn't the same as are, though.
> 
> Cleaning such things is always a case of dilution being the solution
> to pollution.  You are trying to thin out the rosin.  The first batch
> of alcohol is just to soften the rosin, and move the bulk of it out...
> It will get pretty yucky, and will take a while.  After it is done,
> nd flushed, it could be worth while to just pass the alcohol through
> the pump to waste.  I tend to use 3 small (1/3 cup) jars, and it is good
> enough.
> 
> Because I don't like to through out solvents like this, I rotate the
> jars with each cleaning.  The first pass jar is discarded, and the 2nd
> pass jar becomes the new first pass jar, the 3rd pass jar becomes the
> new 2nd pass jar, and the old 1st pass jar gets filled with clean to
> become the new 3rd pass jar.
> 
> -Chuck Harris
> 
> Mark Sims wrote:
>> 
>> One thing to be aware of when running solvents through these things is that many
>> models have an internal Visifilter (usually the totally sealed one) on the lines
>> (some have just a fiber filter).   You should replace that at this time.   I
>> always remove it before cleaning the pump...  otherwise it can store a lot of
>> fluids you probably don't want hanging around in the machine.
>> 
>> I have tried recirculating the solvent,  but the exhaust port pressure valve seems
>> to always leak solvent,  so I just cover the port with a rag.  Also,  by not
>> recirculating the solvent,  you don't recirculate grunge back into the machine.
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