Hi-Touch Imaging Technologies Mug Heat Press Kit - Manual (Page 21)

5. Make sure the wire and the new heater plate is properly reconnected.
6. Put the connector through the semi-sphere hole and put the heater plate
into the original location. Then put the black rubber and white Teflon onto
the machine.
Make sure the heater plate , black rubber and white silicon are wrapped
by white Teflon. Then push the white Teflon into the original location.
7. Completion of heater plate replacement
110V and 120V : Blue line
220V and 220V : White line