In a low-volume application an ordinary home dishwasher will do fine,
PROVIDED you use deionized water (not "soft" water) and a cleaner
designed specifically for the job. In my previous life I tested many
cleaners and the one which did the best job and left the least residue
was Armakleen E-2001 made by Arm and Hammer. A 55 gallon drum was about
$2k a few years ago. Good stuff, but I do miss Freon.
For what it's worth, National Semiconductor's resident wizard Bob
Pease used to clean circuit boards using an ordinary dishwasher and "a
standard charge of Calgonite". If I recall correctly, he suggested
taking the board out after the rinse cycle, doing a final rinse with
distilled or deionized water and then shaking the remaining water off
of the board prior to air-drying.
He reported that this method would get the cross-board leakage
currents for sensitive high-impedance circuitry down below what he was
able to achieve with organic-solvent washes.
--
Dave Platt AE6EO
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