Settings will vary by machine and also by the type of product you are 
running, i.e. board thickness, rigid or flex, etc.  Also the distance from 
the air knives to the board surface is important.  Try some of these ranges 
to get you started:

Solder pot temperature: 240° - 250°C    (465° - 480°F)

Air knife temperature   250°C

Air knife pressure      30 - 40 foot lbs/in2    

Dwell time              2 -3 seconds

Insert / Withdraw       20 - 22 inches/sec

Good luck,
Scott A. Bowles
Engineering Mgr.
Sovereign Circuits Inc.



In a message dated 10/21/99 6:51:05 AM !!!First Boot!!!, [log in to unmask] 
writes:

<< We are using a Taiwanese HASL machine and we are having a lot of problems
 with solder thickness distribution. Can anyone give me some guide lines
 regarding air knife temperature, extraction speed, dwell time etc.
  >>

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