Pump should pay attention to the inspection and monitoring before starting work

First, the bearing work is normal 1, the oil temperature: Do not exceed 60 ℃. 2, the oil level: no oil ring rolling bearings, oil surface should not be less than the center of the ball; oil ring bearings, oil surface should be buried one-fifth of oil ring diameter. In order to monitor the oil level, the bearing is equipped with an oil gauge or oil gauge. 3, oil quality: water can not enter the impurities, can not be emulsified or black. 4, whether abnormal noise: especially the rolling bearings, damage usually appear abnormal sound. Second, the vacuum gauge, pressure gauge, ammeter reading is normal 1, vacuum gauge pointer can not swing too large, such as swing too large may be the entrance of the vaporization. In addition the vacuum gauge readings can not be too high, too high may be blocking the entrance door stuck, or the entrance door flap off, reduce the water level in the suction basin. 2, the pressure gauge reading is too low, the pump may be poor working parts, sealing rings and other serious wear and tear. In addition, when the system water demand is large, the pump outlet pressure will also be reduced. 3, ammeter reading is too large, may be a large amount of water supply, the pump friction and so on. If the ammeter reading is too small, indicating that the pump has fallen into the water or the outside world does not need so much water. Third, the pump vibration whether the vibration amplitude of the pump is generally not more than 0.08 mm. (Special requirements for the pump another set) Vibration reasons are: 1, the pump and motor center is not correct. 2, pump or motor ground screw loose, or the foundation is not solid. 3, bearing cap tight enough. So that the bearing appeared in the body beating. 4, the rotor quality is not balanced. 5, volute pump, especially some high-lift volute pump, in the small flow, there will be varying degrees of vibration, it is because the rotor radial force at this time. When the outlet valve is opened to a certain extent, the vibration disappears. Fourth, the sealing work is normal 1, the filler should be able to drip a little, do not be too tight, otherwise it will heat and smoke. But too loose will leak a lot, easy to flee into the bearing oil emulsification. Should be replaced regularly packing, hard hair can not afford the role of shaft seal. Soaking a long time will make the stuffing tank rot 2, the end of the machine seal before operation to fill the liquid to prevent dry grinding, long time no boot equipment is best to use artificial disc off, easy to crystallize, granular media, right Medium temperature ≥ 100, the best way is to take appropriate flushing, filtration, cooling measures and auxiliary sealing device.

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