The foot control is not working
well particular on electrical problem foot control is a switch of motor that deliver speed varies on how you press the foot pedal it consist of circular thick plate carbon the old model and the new one electronically control of power ic,It depend on how this pedal was contro.Anyway besure the power is off or unplug the machine; this control was been connected in series connection to the motor which you can test if your foot pedal control is defective. Disconnect the line wire holding foot pedal from the terminal inside motor assembly.If your not qualified electrician don.t do this.Connect the two terminal wire that inside the machine where the motor mounted.This connection is supplying your motor in full speed,Declucth your machine from the handwheel so that the motor run only.Plug the machine and switcn but you must jug only if the motor run in couple second of course without the foot control this was disconnected already.So your foot control is defective vice versa if motor does not run without foot control motor is busted.
how to fix if foot contol is defective, in carbon type you must replcace the circular thick carbon.On Electronic control check the IC if this open or some capacitor and resistor are open,Replaced any pars that had been short circuited.If the motor is defective replaced the carbon brush mounted at two side of motor case,There is an opening port.The carbon brush has spring holding push this carbon brush to the brush armature of rotor.
Mar 06, 2009 |
Kenmore Sewing Machines