Hi Henry!

I don't have any answers to your dilema, but your post does bring up some
questions...

Once you have ProFlow installed on the printer, can you go to regular
squeegees if you need to? I know I could call DEK and find that out, but I
like to hear from us guys...

I have a DEK-288, and I can get it retro-fitted with ProFlow, but I wonder if
things go haywire, can I go back to analog=squeegees.

This is something that I've thought about with my new wave solder...I've got
an Electrovert Electra...everything is computer controlled...so if my
computer crashes on the machine (It's Windows NT, makes me feel a little
better...) I'm basically DIW...sorry, Navy term (Dead In the Water).

-Steve Gregory-


> We are having some issues with a new solder paste.  The evaluations came out
> extremely well at first.  However, upon using it for some trial runs, we
> run
> into some problems.
>
> In our DEK profolw the prints look very good at about 20 deg C.  Throughout
> the day, the temp in our facility climbs to 28 or even 30 deg C.  The
> prints
> then start to bridge and flux bleeds out onto the board.  We can compensate
> for it to about 25 deg by reducing the proflow pressure and wiping on every
> print, but beyond 25 deg, nothing helps.
>
> By the time the 3rd shift rolls in, the temperature starts to drop again
> and
> the prints become more managable again.
>
> Here's the kicker, we use this same paste on our MPM with squeegee's and
> the
> print works every time.  There is never a print problem vs temperature.
>
> Has anybody ever run into this situation?  How did you solve it?
>
> Thanks in advance.
>
> Henry J. Rekers
> Manufacturing Engineer
> Power Measurement.
>


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