Electrical Projects One of the most popular of modern home beauty appliances is the hair curler. After the agony of curling irons and permanent waves, tody's electrified approach to hair care is a convenience most women enjoy despite the occasional mechanical and electrical problems which these appliances present. Fortunately, their design allows the do-it-yourselfer to make the needed repairs easily and quickly.

The circuit is very simple, employing only a fuse, heating element, and temperature control. The power switch, a microswitch operating from a normally closed position, activates the heating element circuit when the cover of the curling unit is removed. The two indicator lights are energized and remain on until the heating element has reached its optimum temperature (after 3 to 4 minutes). At this point, the thermostat opens to shut off the circuit to the red (heating-indicator) light which lets the operator know that the curlers are ready for use. Temperature is maintained at the optimum level by the thermostat until the cover is replaced.


Troubleshooting

If the curler is completely dead—no heat and no light—check the switch, line-cord, and connection continuity. The activating tab must engage the switch arm. If the white indicator light is on while the red light remains off and no heat is developed, replace the thermostat. No heat with both lights on means a defective fuse or open heater element. You will have to puncture the fiber-glass sleeve with a probe to check the fuse. With an ohmmeter, check the heater element. If the curler under- or overheats and blows fuses in the process, first check the output temperature (see below). Then replace the thermostat.




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Home > Electrical Projects > Repairs > Hair Curlers

October 6, 2008