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　  1. Pump vibration causes of uneven rotor or motor shaft coupling poor, bearing wear and tear, rotating part of the loose parts, rupture, pipe support is not strong and so on. Can be taken to adjust, repair, reinforcement, straightening, replacement and other methods.
2. pipeline leakage and gas leakage may be installed because Undertightening screw cap. If the leakage is not serious, in the place of leakage or leakage coated with cement, mud or soft soap and so on. If the joint leaks, you can tighten the screw cap by hand. Leak serious must re-disassembly.
3 overheating and packing due to too much pressure is too tight, cooling water into the filler or shaft surface damage caused. Proper relaxation of packing can be taken to clear up the sealing tube blockage and other measures. Filler wear and tear must be replaced with new, soak in the oil before installation, turn-by-turn into. Cut to be staggered, so as to reduce leakage. After the last lap packing installed tightly gland, then adjust the tightness when running.
4. The pump is not water or not drained The reason for the end of the valve stuck, filtered part of the blockage, suction height is too high or water leakage, may also be due to the wrong, impeller runner blockage caused. After one by one inspection, respectively, to take the end of the repair valve, remove debris, correct steering, impeller cleaning and other measures for processing.
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