Centrifugal pump is used to transport water or other liquid equipment, it has high efficiency, can be directly connected with the high-speed motor running, simple structure, light body, easy to adjust, in industrial and agricultural production and daily life has been widely used . Centrifugal pump in operation, may have a variety of faults, and now the possible causes of failure and approach are described below. First, the pump does not start when the water 1. No water or no water before starting. Should stop the pump to re-fill the water. 2. Absorption height is too large p should reduce the water absorption height, so that no more than 6 meters. 3. Suction pipe leaks or bubbles, should check the suction pipe to eliminate leakage. 4. Taps plugged, taps should be cleaned. 5. Turnover is too low, check the power situation. Second, start, the pump displacement is small 1. Impeller inlet blocked by debris, impeller damaged or blocked; check the first paragraph of the pump to clean up debris or replace the impeller. 2. Faucet partially blocked; check clean. 3. Suction pipe joints are not tight; check the connector counterparts, tighten or change pad. 4. Impeller ribs wear, mouth ring seal wear too large; check to confirm, replace the mouth ring seal. 5. Pan plate leakage; replace the plate ç» box. Third, the tap suddenly fell out of water 1. Faucet out of the water; stop pump. 2. Faucet is blocked; pump stop cleaning. Fourth, the motor current is too large 1. Drainage gate at the end of the start off strictly; start attention. 2. Balance ring plate tilt too much or parts have stuck phenomenon; check the interior, the abnormal part of the repair. 3. Rotating part of the adjustment is not correct, to the direction of the water absorption string, move too large, so impeller against the mouth ring; first impeller rotor pushed into the water side of the vertex, and should be based on the score check. 4. Improper wheel alignment or aprons too tight; Fifth, lack of water pipe running too much water pressure 1. Balance disc sleeve and water jacket gap to expand; check the process, if necessary, replace one of the parts. 2. Improper assembly of the rubber gimbal, not being braced or stepped up the ring, without reinforcement rubber cord in the tight circle; Remove the bracket, re-assembly of the balance ring. Six, pump vibration during operation 1. Pump and motor center is not right; check and adjust. 2. Water pipe is not fixed properly; check and adjust. 3. Support bearing clearance large; check to adjust. 4. Shaft bending; maintenance, replacement of the new shaft. 5. Impeller or balance disc askew; overhaul. 6. Ground screw loose, the foundation is not tightened; tighten the anchor bolts or study to solve the basic problems. Seven, bearing fever 1. Not clean or insufficient oil; clean bearings, change oil or refuel. 2. Oil ring does not turn or inflexible; check handling. 3. Bearing clearance is too small; appropriate adjustments (pad or scraper). Eight, the plate by the fever Pan ç» installed too tight or not soaked in oil; readjust or replace. Nine, balance plate fever Lack of water pipe dirty or pipe valve is not open; clean or open the valve. Ten, pump shell fever In the gate closed or anhydrous circumstances, the pump working time is too long; stop pump cooling, and then start to pay attention. In addition, during the pump operation, there will be motor failure, here is no longer introduced. Centrifugal pump is used to transport water or other liquid equipment, it has high efficiency, can be directly connected with the high-speed motor running, simple structure, light body, easy to adjust, in industrial and agricultural production and daily life has been widely used . Centrifugal pump in operation, may have a variety of faults, and now the possible causes of failure and approach are described below. First, the pump does not start when the water 1. No water or no water before starting. Should stop the pump to re-fill the water. 2. Absorption height is too large p should reduce the water absorption height, so that no more than 6 meters. 3. Suction pipe leaks or bubbles, should check the suction pipe to eliminate leakage. 4. Taps plugged, taps should be cleaned. 5. Turnover is too low, check the power situation. Second, start, the pump displacement is small 1. Impeller inlet blocked by debris, impeller damaged or blocked; check the first paragraph of the pump to clean up debris or replace the impeller. 2. Faucet partially blocked; check clean. 3. Suction pipe joints are not tight; check the connector counterparts, tighten or change pad. 4. Impeller ribs wear, mouth ring seal wear too large; check to confirm, replace the mouth ring seal. 5. Pan plate leakage; replace the plate ç» box. Third, the tap suddenly fell out of water 1. Faucet out of the water; stop pump. 2. Faucet is blocked; pump stop cleaning. Fourth, the motor current is too large 1. Drainage gate at the end of the start off strictly; start attention. 2. Balance ring plate tilt too much or parts have stuck phenomenon; check the interior, the abnormal part of repair. 3. Rotating part of the adjustment is not correct, to the direction of the water absorption string, move too large, so impeller against the mouth ring; first impeller rotor pushed into the water side of the vertex, and should be based on the score check. 4. Improper wheel alignment or aprons too tight; Fifth, lack of water pipe running too much water pressure 1. Balance disc sleeve and water jacket gap to expand; check the process, if necessary, replace one of the parts. 2. Improper assembly of the rubber gimbal, not being braced or stepped up the ring, without reinforcement rubber cord in the tight circle; Remove the bracket, re-assembly of the balance ring. Six, pump vibration during operation 1. Pump and motor center is not right; check and adjust. 2. Water pipe is not fixed properly; check and adjust. 3. Support bearing clearance large; check to adjust. 4. Shaft bending; maintenance, replacement of the new shaft. 5. Impeller or balance disc askew; overhaul. 6. Ground screw loose, the foundation is not tightened; tighten the anchor bolts or study to solve the basic problems. Seven, bearing fever 1. Not clean or insufficient oil; clean bearings, change oil or refuel. 2. Oil ring does not turn or inflexible; check handling. 3. Bearing clearance is too small; appropriate adjustments (pad or scraper). Eight, the plate by the fever Pan ç» installed too tight or not soaked in oil; readjust or replace. Nine, balance plate fever Lack of water pipe dirty or pipe valve is not open; clean or open the valve. Ten, pump shell fever In the gate closed or anhydrous circumstances, the pump working time is too long; stop pump cooling, and then start to pay attention. In addition, during the pump operation, there will be motor failure, here is no longer introduced.