Dimmer Switch: Testing and Inspection

INSPECT LIGHT CONTROL RHEOSTAT OPERATION
a. Turn the rheostat knob max. dark side and check that the resistance 5.1 ohms. (Rheostat knob turned to fully counterclockwise)
b. Gradually, turn the rheostat knob from the dark side to bright side and check that the resistance decreases from 5.1 to 0 ohms. (Rheostat knob turned to clockwise)
If operation is not as specified, replace the rheostat light control.