Prior to that, we used an AC/DC motor. Use that motor ONLY with the power source for which it was intended. It will not automatically adapt to any other current and using it with an improper power source will burn out the motor or speed control. Also, the first few DC units built did not include the circuits to adapt to other currents. If you have an early DC model, remove the plastic speed control housing and look for a label on the aluminum speed control frame. If it has a small metallic label on top of the frame that lists input voltage as 120VAC, DO NOT ATTEMPT TO CONVERT TO OTHER CURRENTS. Models that can be used with any current have a paper label on the end of the speed control frame which lists the model number as KBLC-240DS.
The machines are normally supplied with a USA type plug but can be easily rewired to accept a European or U.K. type plug by attaching the wires using the color codes provided below.
GROUND (EARTH) GREEN GREEN W/YELLOW
FIGURE1a-Wire color codes for USA and European connectors.