I just picked up an ultrasonic cleaner from Harbor Freight today. At $25, it was finally time for me to get one. It has a stainless steel bowl and a plastic basket. The instructions are very sparse and they don't list any approved additives.
While the instructions say to just add lukewarm water, there is another section which states "Failure to fill the ultrasonic cleaner with water or a non-corrosive cleaning material before using will severly damage it and void the warrenty". So, obviously I can use some kind of cleaner. But what? There's no mention of acceptable additives.
I tried it today with only water. I put a couple bare AFX chassis into the basket and ran it through a couple cycles - each cycle is 3 minutes. I noticed next to nothing in terms of cleaning the electricals.
So what are these "non-corrosive" cleaners?
How long, how many 3 minute cycles, do the chassis have to be in the cleaner before it all gets loose?
Do I need to take a toothbrush to the chassis or should the crud just flake off?
I have a very old e-mail that mentions denatured alcohol as a cleaner for tough jobs. Is that a good additive?
Thanks...Joe