In hot weather

(1) Control KOYO bearing temperatures. For some direct impact on the unit load and secure an important motor bearings, such as the blower motor, a fan motors, fan motors, etc., modify bearing temperature setpoint, the temperature alarm value by the 90 ℃ down to 70 ℃, so that in the event of abnormal temperature rises, there is enough time to take measures to ensure crew safety. In hot weather, commissioning temporary fan, reducing Taper bearing temperature to ensure a sufficient degree of lubricating oil, to improve the lubrication conditions.
     (2) strict process, eliminate center misalignment, motor feet uneven foundation is not solid, rotor imbalance, abnormal loads, such as failure, the role of these failures is reflected in the results of multiple abnormal vibration motor on. Ideal conditions of the motor bearings, in theory, can run more than 100000h, but the actual operating life 10000h pretty good.
     Ligang using only one year of eight vacuum pump, the underlying basis for the steel, non-embedded parts, screws directly through the expansion base fixed on the floor. Run often occur vibration, KOYO bearings over-temperature problem. The foundation reprocessing, reducing the amplitude, the motor bearing life lasted three years.
     (3) Electrical installation, commissioning state motor identification of good work. According to the importance of the motor, commissioning 30 ~ 60min, commissioning should be monitored motor vibration. Motor amplitude and motor center related, based on experience, for center height> 200mm motor idling vibration value ≤ 30μm, running with load ≤ 60μm. For example: LS-315-MP4 motor, 132kW, 250A, idling vibration value 7.8 μm, running with load KOYO bearing life is only a year later after repeated diagnostic tests and found that the vibration due to the motor and the pump based on a shared steel fasteners fatigue caused by loose, re-reinforced base, the motor bearing replacement cycle> 3 years.