The only devices that can withstand 220 to 110 conversion are those that have the capability built into them. (Usually clearly marked 110/220V 50/60Hz on the UL certification label) The problem with using an after market adaptor (unless you spend a lot of $$$ on it) is that the ship’s 220 is 50 Hz and our 110 is 60 Hz, and what you are buying is merely a step down transformer - us old folk used to call that a rheostat). The inability of the adaptor to change from 50/60 cycles per second will generate additional heat on the motor, and increased load on the heating element. In short, the motor runs slower, the elements run hotter, and the device can’t handle that for long before the thermocouple safety overheats and shorts out the device.