Okay I have taken a look at the back of my juicer, it just has a power port with no markings on it. Then the power supply has some logo on it, then it says
Toy Transformer
Input: 100-127V AC
50-60Hz 750mA
Output: 30V DC 1000mA
Class 2 Transformer
On the back of the juicer it says device input is 30v DC 1.0A
So from those specs is it fine to just use a 110v to 240v plug adapter?
Edit: I looked at the manual for anything to do with power and it says 'plug in the power supply to a standard 120 volt outlet and into the back of the juicer'