Temperature of water for ultrasonic RCM

I've used up to 45c but now go around 35c. I believe that after the surface is clean, it's more important to use a surfactant to release imbedded particles than having heat a main factor

@dmk_calgary

Ultrasonic activity can raise the water temperature by about 10-15° C. I guess it would just depend on how long you run the ultrasonic transducers and how large your ultrasonic tank is.

I used to have a DIY 6L ultrasonic cleaner and without using the tank heater, I would get about a 5-6° C rise after 10 minutes.

I now use a Degritter (much smaller tank) and it will pause for cool down if I run it on Heavy for more than 1 LP. Luckily, I don’t do marathon cleaning sessions otherwise I could see how that could get annoying.

I start at 30 C and go up to about 42 C.

I`ve cleaned as high as 45 C without issues

I’m using an Isonic without heater, and I’m trying to figure out a way to introduce a little heat to the process.  I used it 5 hours yesterday, and the water was as cold when I finished as when I started.  When I dropped down to 4 records per cycle, with @2.5 inches between each disc, I noticed a big difference in results.  It was good with 10 records, but now I can visualize the water acting on the surface of the record.  Results sound even better.  Seems like slightly warmer water would be helpful?  Something short of buying a new unit.  Any ideas?

Preheat water prior to filling tank.