Common faults and maintenance methods of household self priming pumps?

The common faults and maintenance methods of household self-priming pumps are as follows:

Poor or no water absorption.

Possible causes: clogged inlet pipe of self-priming pump, debris at the water inlet, air leakage of water inlet pipeline, impeller wear, etc.

Maintenance method: clean the inlet pipeline, clean the debris at the water inlet, check whether the water inlet pipeline is leaking, replace the impeller, etc.

The effluent flow is too small.

Possible causes: clogged suction pipeline, clogged outlet pipe of self-priming pump, damaged impeller, damaged seal, etc.

Maintenance method: clean the suction pipe, clean the outlet pipe, replace the impeller, replace the seal, etc.

The effluent pressure is unstable or no pressure.

Possible causes: self-priming pump pressure switch failure, improper adjustment of pressure switch, leakage of outlet pipe, etc.

Maintenance method: check whether the pressure switch is faulty, adjust the starting pressure and stop pressure of the pressure switch, check whether the outlet pipe is leaking, etc.

Self-priming pumps are noisy.

Possible causes: wear of self-priming pump components, aging bearings, loosening of casing and pump body, etc.

Maintenance methods: replace wear parts, replace bearings, adjust casings and pump bodies, etc.

It should be noted that there may be a variety of causes and maintenance methods for the failure of household self-priming pumps, which need to be analyzed and dealt with according to the specific situation. In addition, in order to prolong the service life of the self-priming pump, it is recommended to carry out regular care and maintenance, such as cleaning the pump body, checking the motor and wire connection, etc. If you can't solve the fault yourself, it is recommended to ask a professional to repair it.

1. Common faults of self-priming pumps.

The common fault of the self-priming pump is that the water output of the light one decreases, the heavy one cannot absorb the water, and if the power continues to be on, the pump body will heat up.

Faster. There are three reasons for the failure: First, the pump body is not tightly sealed, resulting in the air in the pump is not clean and cannot reach the vacuum level.

Request; Second, the assembly is unreasonable, the pump is not concentrious, and individual components are not installed in place; Third, the gap between the impeller and the pump casing is unreasonable.

Second, the fast repair method.

1.It is critical to check that the shaft of the motor is concentric with the bore of the pump casing. The inspection is to focus on checking whether the motor end cover is back in place, the rotor bearing and the end cover should rotate flexibly as a whole, and the skill to master is to adjust while assembling the pump, because the pump is sharing a rotor shaft.

2.Correct installation of the impeller efforts, focusing on the position between the impeller and the pump casing is accurate and error-free, if there is an error, the impeller will deviate from the correct position, resulting in no water absorption.

3.Check the amount of suction. Fill the pump casing with water first; Plug the suction port of the pump with your hand to see if the water level in the inlet has dropped.

If the water level drops, it means that the sealing is not good, and the sealing is adjusted until the water level in the pump casing drops. Then check the suction power of the pump, still filling the pump casing with water, with one hand.

4. High noise and vibration during operation. Most of them are damaged bearings or improper fit between the bearing and the casing, and the motor needs to be disassembled for inspection, and if the bearing is damaged, it should be replaced; If the bearing runs the outer circle, the mating surface of the pump casing can be chiseled and treated; If the bearing runs the inner circle, the wear part of the motor shaft can be chiseled treatment, and if the wear is serious, it can be repaired by first surfacing and then turning.

2. The casing is electrified. Most of them are water seals.

Damage, water infiltrates into the motor through the motor shaft and deteriorates the insulation performance of the motor, which can be repaired by replacing the water seal and drying the motor. It should be noted that because the pump is in contact with water for a long time and works in the open air, it is very susceptible to moisture and deteriorates the insulation performance, in order to ensure personal safety, the electric self-priming pump should be reliably grounded with 8.

The reason for the loud sound of the self-priming pump: the fault is mainly caused by the insufficient head and the inability of the equipment to absorb water. At this time, it is necessary to replace a high-power water pump, which can completely solve the problem.

In addition, if there is a leak in the pipe, it will also cause problems such as loud noise, so when dealing with this problem, you can simply replace the leaking pipe. 2. The self-priming pump cannot be started: the fault is generally caused by the power failure, so it is necessary to check whether the joint connection is firm, whether the fuse is broken, whether there is a short circuit in the power supply, poor discharge, lack of phase, etc., and then repair them one by one.

In addition, it is necessary to check whether there are any problems with the equipment itself, see if there are any problems such as foreign object blockage, rust and bending of the pump shaft, and then rule out or replace it. 3. The cause of self-priming pump heating: the fault is generally caused by bearing damage, so before eliminating, it is necessary to check whether the bearing clearance is too small, whether the two shafts are concentric, whether the belt is too tight, whether there is a lack of oil, whether the impeller is balanced, and then open the back cover, and then add a gasket between the bearings, adjust the concentricity of the two shafts, or replace the new tape and oil.

Summary. The reasons why the self-priming pump cannot absorb water are as follows:1

The pump casing is not stocked or there is not enough reservoir. 2.Air leakage in the suction line.

3.The rotational speed is too low. 4.

The suction lift is too high or the suction line is too long. 5.Excessive leakage of mechanical seals.

6.Suction line gases cannot be discharged from the outlet. (From Anhui Tenglong Pump and Valve Professional) to see if there are any of the above problems, I believe it is not difficult to solve the problem after finding it.

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Common faults and maintenance methods of household self-priming pumps?

Common faults of household water pumps: 1. Disconnection. If there is no sound after the power is turned on, check whether there is a problem with the power cord.

2. Rust. Check if the pump is difficult to rotate and may not turn due to rust. 3. The water seal is broken.

If it turns and does not apply water, the water seal needs to be replaced. 3. For major problems such as motor wire burning packages, it is necessary to ask professionals to repair or replace them with new ones.

The self-priming pump does not absorb water, and it does not suction hands when blocking the water inlet with your hands, and the water added to the pump is not less, and there is no suction at all.

Most users do not understand the principle of self-priming pumps, and they encounter water pumps. If it is tilted upwards, air is trapped in the inlet pipe, reducing the vacuum in the pipes and pumps.

The reasons why the self-priming pump cannot absorb water are as follows:1The pump casing is not stocked or there is not enough reservoir.

2.Air leakage in the suction line. 3.

The rotational speed is too low. 4.The suction lift is too high or the suction line is too long.

5.Excessive leakage of mechanical seals. 6.

Suction line gases cannot be discharged from the outlet. (From Anhui Tenglong Pump and Valve Professional) to see if there are any of the above problems, I believe it is not difficult to solve the problem after finding it.

Four reasons why the pump doesn't water.

How to repair a broken household self-priming pump.

It is that there is air leakage in the pressurized water well valve, and the best solution is to put a pipe into the well separately from the self-priming pump, if it can't be put down, only install a valve at the bottom of the water press, and close the valve when the water pressure is not used, so that no air will enter the pipeline, and the self-priming pump can work normally.