ZX series of horizontal self-priming pump is characterized by simple structure, reliable, durable. In the normal case of pumps, usually do not need to often dismantle and maintain. When you find the fault can be excluded at any time. 1. Maintain the pump should pay attention to several major parts: a. Rolling bearings: When the pump long-term operation, the bearing wear to a certain extent, to be replaced. b. Front seal ring, rear seal ring: When the seal ring wear to a certain extent, to be replaced. c. mechanical seal: mechanical seal in the case of no leakage, the general should not open and check. If there is any serious leakage at the lower end of the bearing body, the mechanical seal should be disassembled. Assembly and disassembly of mechanical seals, you must gently, pay attention to the cleaning with the surface to protect the static ring and moving the mirror ring is strictly prohibited percussion collision. The main reason for the leakage caused by the mechanical seal is the rubbing of the mirror surface. The repair method, you can pay to rub the friction surface to restore the mirror. Another reason for the leakage of a mechanical seal is that the O-ring seal (or cushion) is improperly installed or deformed. In this case, you need to adjust or replace the "O" ring for reassembly. 2. Disassembly sequence of the self-priming pump: a. Remove the motor or disengage the coupling b. Remove the bearing body assembly, check the impeller and the front Remove the impeller nut, pull out the impeller, check the radial clearance of the impeller and the rear seal ring. D. Loosen the tight seal of the mechanical seal, pulling Check out the seal of the "O" ring [or cushion] by checking the fit of the moving and stationary ring end faces, e. Unscrew the fastening nut of the coupling and pull out the coupling F. Remove the bearing cover, remove the pump shaft and bearings. G. Installation can be assembled in the reverse order. 3. Self-priming pump failure: the pump does not produce the reasons: 1. The pump shell is not added Liquid or liquid storage inadequate 2. suction pipe leakage 3. speed is too low 4. suction is too high or suction pipe is too long 5. mechanical seal leakage is too large 6. suction pipe gas can not be discharged from the outlet Remedy: Add enough stock solution 2. Check and eliminate the air leakage 3. Adjust the speed 4. Lower suction or shorten the suction pipe 5. Repair or replacement 6. To make it out of trouble: Noise and vibration larger causes: 1. Feet unstable 2. Pump shaft bending 3. Cavitation phenomenon 4. Bearing wear serious 5. There are impurities in the import pipeline 6. Pump and motor are not the same spindle to exclude: 1. Reinforcement 2. Replacement or calibration 3. Adjustment conditions 4. Replacement 5. Dripping impurities 6. Adjustment of coaxial failure: Out of water causes: 1. Leaf Runner and suction pipe is blocked 1. impeller or impeller seal wear serious 3. Insufficient power or speed is too low Remedy: 1. To exclude blockage 2. Change the mouth ring 3. Add enough power to the rated speed Fault: Shaft power Excessive consumption causes: 1. The flow is too large 2. The speed is too high 3. The pump shaft is bent or the impeller card is touched 4. The pump is clogged or stuck in the flow passage. Removal method: 1. Raise the outlet pressure 2. Appropriately reduce 3. Replacement or Correction 4. Remove obstructions
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