Maybe this is the "slamming door" postulated at the beginning of this
correspondence??? It might be interesting to run a test dispense cycle with the
needle outlet at a great height and see how many shots you can get compared to a
normal run......

Mike Fenner
BSP, OX15 4JQ, England
T: +44 1295 722 992
M: +44 789 999 7715
F: +44 1295 720 937


-----Original Message-----
From: Ingemar Hernefjord (EMW) <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: 14 September 1999 09:24
Subject: Re: [TN] Clogging dispensers soon...


>Now I have the (questionable) honour to present another, not so elucidative fact we
have missed somewhat:the syringe-to-target distance. The issued approx. 50um goes
sometimes down to <10um or even hits, caused by substrate warpage. In these
positions, wet chemistry "bleeeds" out, but flakes, too large for the little space
left, can't leave needle exit, and...you get at haemorroid. The countermeasure was to
tell the machine to check space repetedly  and make the necessary needle height
correction. Lesson: keep right distance.
>CU
>Ingemar Hernefjord
>Ericsson Microwave Systems
>Aussilek, how on earth did you get the cotton through? Did you run a full spool?
>
>

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