Identify the type of motor and examine its nameplate information. I have a bionaire brand table electric fan.
3 Speed Blower Motor Wiring Help Doityourself Com Community
How to test a 3 speed fan motor. Take your multimeter and set it to ohms. How to check an electric motor if it is bad. Switch the volt meter to the ohm setting. If there is any reading on any of these then the motor is bad do not use it. If the fan motor does not turn on while you hold the switch the motor is probably bad. The motor has a 4mu 250volt capacitor.
Press and hold the switch for a minute. It has a 3 speed fan motor. There are 4 wires connected to the motor coloured white yellow blue and black respectively. Ball bearings in motors can wear out without lubrication. This fan has an oscillating grill with independent sync motor and timer circuit. The electric motor is a bm 122 decomin brand 3 speed motor.
This is the schematic from the manual of the fan which i salvage this motor from. Do the following with the motor disconnected. There are 6 wires. Reverse the leads on the capacitor. Place the leads of the ohm meter on the wires that run from the capacitor to the motor. White wire has a high speed label.
The motor uses. Something was wrong with the solid state circuitry everything worked but the motor but a quick test of the motor indicated it does work. Count to three while the leads on the meter charge the capacitor. If it turns on you should be able to clearly hear the electric motor activate and then a low hum from the fan spinning. The type of. Now is the time to test the white brown and white wires.
The freezer light should turn off and the evaporator fan should kick on after a few seconds. I have no knowledge about motors. Small fan motors last a long time due to few moving parts. Check for mechanical binding or seized. Test the first set of wires. Hope someone can enlighten me on the.
Sounds like you have a winding down to ground. Yellow has a medium speed label and blue has a low speed label. The white wire is called the run wire. With a multimeter set to low ohms usually 200 test between each winding terminal and the metal casing of the motor.
Gallery of How To Test A 3 Speed Fan Motor
