Trouble phenomenon Elimination method Mixed flow pump does not water 1, insufficient water intake or vacuum pump enough air in the suction pump 2, inlet pipe leakage 3, suction stroke is too high 4, the pump is not steering 5, the total water supply exceeds the required 1, continue to pump Or exhaust 2, check and eliminate 3, reduce the pump installation height 4, change the steering 5, reduce the flow of mixed-flow pump interrupt 1, too much water bubbles 2, water inlet fossa 3, inlet leakage 4, water inlet Or the impeller is clogged with debris 1, increase the depth of the inlet pipe immersed in water 2, exhaust 3, adjust the litter, tighten the bolts 4, remove debris less than 1, the inlet pipe or impeller is clogged with debris 2, speed Not enough or insufficient power 3, the water is too high 4, the pump cover and impeller wear, sealing gap is too large 5, the gate valve is too small or blocked the valve obstruction 6, the inlet pipe into the water depth is not enough 1, excluding Debris 2, adjust 3, lower 4, repair or adjust the paper pad 5, the appropriate opening gate valve, remove obstacles 6, increase the depth of immersion Power consumption is too high 1, the speed is too high 2, shaft bending 3, 4, bearing wear or damage 5, the belt is too tight 1, lower 2, straighten 3, loosen the gland nut or packing Remove flat some 4, replace 5, appropriate to generate noise, vibration 1, shaft center is not positive 2 , Shaft bending, bearing wear 3, the packing pressure is too tight 4, the bearing wear or damage 5, the suction is too high, the occurrence of cavitation 6, the pump sucked debris 1, find positive 2, straighten or replace 3, tighten 4, exclude 5, to reduce the installation height 6, excluding bearing fever 1, less than 2 lubricants, lubricating oil quality is not good, not clean 3, the shaft center is not aligned 4, bearing wear 5, the belt is too tight 1, refueling 2, Clean the bearing 3, find correct 4, replace the bearing 5, appropriate to relax the packing fever 1, the packing pressure is too tight and the tightness around the uneven 2, the packing pressure deflection, uneven bearing sleeve 1, unscrew the gland nut Adjust the packing tightness 2, release the gland, re-tighten the packing leaking too much 1, the packing is not compressed 2, the packing device is improper 3, the packing specifications do not match 4, bush wear 1, appropriate tighten the gland nut 2 , Adjust the filler buckle, so that a certain angle of staggering 3 4 replace the packing, with the change sleeve
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