How to cool the hot weather in the operation of the pump motor

1, the motor winding be affected with damp be affected with damp or dust, oil, such as adhesion on the winding, results in the decrease of insulation. Should measure the insulation resistance of the motor and cleaning, drying, processing; The environment temperature is too high. When the environment temperature more than 35 ℃, inlet air temperature is high, can make the temperature of the motor is too high, should try to improve their working environment. Such as scaffolding shade, etc. Note: because of reasons of electrical failure, should please the professional qualification certificate for electrical maintenance, a man should not only learn maintenance blindly, to prevent personal injury accidents. 2, choose power does not form a complete set, electric machine long time overload running, start too frequently, continuous work quota of short-time or intermittent duty of motor, the motor temperature is too high. Start times should be limited, correctly chooses thermal protection, according to the motor on the calibration of the norm. 3, high or low voltage, asymmetrical three-phase voltage unbalanced three-phase electric voltage and white degree more than 5%, under certain load, if the voltage fluctuation range should be + 10% to 5% of the rating outside cause overheating; Will lead winding overheating; Lack of phase operation, experience shows that agricultural motor burned down more than 85% are caused by lack of phase operation, motor protection device installation phase. 4, connection error, will misconnection into Y delta form, make the motor temperature rise rapidly; Bearing wear, swept rotor eccentricity chamber makes the stator iron core facies to wipe a clang, core temperature rising rapidly, serious when motor smoke, even coil burned. Stator winding turn-to-turn short circuit or local interphase short circuit, grounding, partial light when motor overheating, serious when insulation burn out; Ventilation system failure occurs, should check whether the fan is damaged, the direction of rotation is correct, vent blockage.