Technical > Home Improvement > Where to buy silicone sealant for boiler blower assembly

If you have an electrical failure where the motor smokes or stinks it is probably done. If the motor gets hot it will usually shut off because it has a thermostat inside to protect it. A motor that was normally working ok and suddenly gets hot may have a bad run capacitor. The run capacitor is a round or flat silver can rated at 5 to 7.5 Mfd (micro farads) for most 208-230 volt motors. To test a run capacitor use this test chart NEVER an ohm meter. If this is the case you can usually just replace the capacitor and your problems may go away. Only single phase motors have run capacitors, three phase motors do not. Some motors for belt drive applications will have a start capacitor but no run capacitor. Some larger motors will have both.