Single-phase 460 induction motors are simple electric motors that are used in a wide array of applications, including many home appliances. One factor that separates single-phase induction motors over other motors is a non-rotating field. These motors also cannot self start and use a start or run motor capacitor to start. These motors are low maintenance and are known for their longevity. However, if it is suspected that the motor is going bad it can be tested.
Instructions
1. Disconnect the power to the item you will be checking the motor in.
2. Take off the motor's wire cover, or squirrel cage, by removing the retaining screws with a Phillips-head screwdriver.
3. Use the screwdriver to disconnect the motor wires from the power supply.
4. Turn the multimeter on to the Ohms setting and touch the positive lead to one connector and the negative wire to a ground. Repeat this test with the positive lead touching the other terminal and the black wire on a ground. If both tests have a reading of zero Ohms, the motor is likely good.
5. Lay the screwdriver across the capacitor leads to discharge them and then remove the contacts with the screwdriver. Examine the capacitor rating on the side of the capacitor and set the multimeter to the capacitance setting.
6. Place the positive meter lead on the capacitor's positive terminal and the negative lead on the negative terminal. If the meter measure matches the capacitance rating marked on the capacitor it is good.
Tags: induction motors, positive lead, These motors, wire ground
