1) All single-phase motors have a built-in thermal protection for all voltages. The overload protects the motor against burnout from overload of low voltage, high voltage and other causes. The device is automatic and resets itself once the temperature has dropped to a safe point. Frequent tripping of the device indicates trouble in the motor or power lines and immediate attention is needed. The device should never be tampered with unless the trouble is located and corrected. WARNING: Never examine, make wiring changes or touch the motor before disconnecting the main electrical supply switch. The thermal device may have opened the electrical circuit. 2) All motors should be equipped with a correctly fused disconnect switch to provide protection. Consult local and national electrical codes for proper fuse protection based on motor data chart. 3) Undersized wiring can cause motor failure (low voltage), frequent cut-out of motor overload protector, television interference and even fire. Make certain the wiring is adequately connected to a separate circuit outside the house in case of fire. |