1, can not start
First check the power supply situation: whether the connection is solid; switch contact is tight; fuse is blown; three-phase power supply is lack of equality. If open circuit, poor contact, fuse blown, phase, should identify the cause and timely repair. Second, check whether the mechanical failure of the fountain pump itself, common reasons are: too tight packing or impeller and the pump body is stuck between the clogging of debris; pump shaft, bearings, leakage ring rust; shaft serious bending . Exclude: relax packing, dredge diversion tank; open the pump to remove debris, derusting; remove the pump shaft correction or replacement of the new pump shaft.
2, fountain pump heat
Reason: bearing damage; rolling bearing or bracket cover gap is too small; pump shaft bending or two axes are not concentric; tape too tight; lack of oil or oil quality; impeller balance hole blockage, impeller out of balance, increased to Side of the thrust. Remove the back cover, in the bracket and bearing between the installation of gaskets; investigate the shaft or adjust the concentricity of the two axes; appropriate tune loose tape tightness; filling clean butter, butter accounted for bearings About 60% of the interstitial space; clear the obstruction within the balance hole.
3, insufficient traffic
This is because: power speed is not supporting or belt slippery, so that the speed is low; axial flow pump blade installation angle is too small; head is not enough, the pipeline is too long or a straight pipe bending; suction high; And partial impeller impeller or impeller defects; water leakage is serious. Adjust the angle of the blade, reduce the fountain pump installation location, shorten the pipeline or change the pipe bend; seal the fountain pump leakage Department, compacting the filler; to reduce the speed of the pump, Remove the plug, replace the impeller; replace the leak ring, plug the leak.
4, not suction Sheung Shui
The reason is the pump body with air or into the water pipe gas, or the end of the valve closed lax irrigation water dissatisfaction, vacuum pump packing serious leakage, gate valve or shutter door closed lax. Remedy: first water pressure up, and then pump the body filled with water, and then boot. At the same time check the check valve is tight, pipeline, joint with or without leakage phenomenon, such as the discovery of leakage, after disassembly in the joints coated with oil or blending paint, and tighten the screws. Check fountain pump shaft seal ring, such as serious wear and tear should be replaced with new pieces. Pipeline leaks or leaks. The nuts may not be tightened during installation. If the leakage is not serious, can be leaking or leaking in the local smear cement, or coated with asphalt oil mixing slurry. Temporary repairs can be applied with wet or soft soap. If the water leakage in the joints, you can use a wrench to tighten the nut, such as serious leakage must re-disassembly, replacement of cracked pipe; lower head, fountain pump nozzle pressed into the water 0.5m.
5, severe vibration
Mainly for the following reasons: unbalanced electric rotor; coupling with poor; bearing wear bending; rotating part of the parts loose, broken; pipe stent is not strong and other reasons. Can be taken to adjust, repair, reinforcement, alignment, replacement and other methods to deal with. The above is a common cause of fountain pump failure, not all of the reasons, the practice of dealing with failure, due to practical analysis, should follow the principle of first outside, not to blindly operate.
6, matching power motor overheating
There are four reasons:
First, the power source of the reasons: the voltage is too high or low, under a specific load, if the voltage range should be in the range of +10% to -5% of the rated value will cause the motor overheating; power three-phase voltage asymmetry, Phase-to-phase voltage interphase unbalance of more than 5%, will lead winding overheating; phase operation, experience shows that more than 85% of the rural motor is burned due to lack of phase operation caused by motor phase protection device should be installed.
Second, the fountain pump reasons: the choice of power is not complete, small horse-drawn carts, motor overload operation for a long time, so that the motor temperature is too high; start too frequently, fixed or short-time intermittent work of the motor system for continuous work. Should limit the number of starts, the correct choice of thermal protection, according to the calibration of the motor using the quota.
The stator windings are short-circuit, inter-turn short-circuit or local grounding, light when the local overheating of the motor, in severe cases when the insulation is not connected to the motor, Burnout; squirrel cage rotor broken or defective, the motor running 1 to 2 hours, the core temperature increased rapidly; ventilation system failure, should check whether the fan is damaged, the direction of rotation is correct, whether the ventilation duct blockage; Eccentric cleaning chamber so that the stator and rotor core phase wiping metal impact sound, the rapid increase in core temperature, a serious electric motor smoke, and even coil burned.
Fourth, the working environment reasons: the motor winding damp or dust, oil, etc. attached to the winding, resulting in lower insulation. The insulation resistance of the motor should be measured and cleaned, dried; the ambient temperature is too high. When the ambient temperature exceeds 35 ℃, the inlet air temperature is high, the motor temperature is too high, should try to improve their working environment. Such as scaffolding shade. Note: For reasons of electrical failure, should obtain professional qualification certificate of electrical maintenance, knowledgeable people can not blindly repair, to prevent the occurrence of personal injury accidents.
7, the fountain pump is not on the water or a small amount of water
First look at the fountain pump at this time running the current and the normal running time of the current difference. If the running time than usual small (basically the current is usually 2/3), then there is impeller wear, the pump head of the top of the check valve clogging and other issues. If the peacetime and current as large, then the tube pad leakage, pipe leakage, pump leakage and other issues. If the current is greater than the normal running time, then basically can be identified is the wearing parts wear problems. Also add that the cable if broken, then the water is usually the same as with the usual, but the current will become larger. 3 phase 380V motor current is generally 2.2A. The above reasons as long as the regular maintenance of deep well pump repair personnel can check out
Keywords:Fountain pump, common failure, solution
First check the power supply situation: whether the connection is solid; switch contact is tight; fuse is blown; three-phase power supply is lack of equality. If open circuit, poor contact, fuse blown, phase, should identify the cause and timely repair. Second, check whether the mechanical failure of the fountain pump itself, common reasons are: too tight packing or impeller and the pump body is stuck between the clogging of debris; pump shaft, bearings, leakage ring rust; shaft serious bending . Exclude: relax packing, dredge diversion tank; open the pump to remove debris, derusting; remove the pump shaft correction or replacement of the new pump shaft.
2, fountain pump heat
Reason: bearing damage; rolling bearing or bracket cover gap is too small; pump shaft bending or two axes are not concentric; tape too tight; lack of oil or oil quality; impeller balance hole blockage, impeller out of balance, increased to Side of the thrust. Remove the back cover, in the bracket and bearing between the installation of gaskets; investigate the shaft or adjust the concentricity of the two axes; appropriate tune loose tape tightness; filling clean butter, butter accounted for bearings About 60% of the interstitial space; clear the obstruction within the balance hole.
3, insufficient traffic
This is because: power speed is not supporting or belt slippery, so that the speed is low; axial flow pump blade installation angle is too small; head is not enough, the pipeline is too long or a straight pipe bending; suction high; And partial impeller impeller or impeller defects; water leakage is serious. Adjust the angle of the blade, reduce the fountain pump installation location, shorten the pipeline or change the pipe bend; seal the fountain pump leakage Department, compacting the filler; to reduce the speed of the pump, Remove the plug, replace the impeller; replace the leak ring, plug the leak.
4, not suction Sheung Shui
The reason is the pump body with air or into the water pipe gas, or the end of the valve closed lax irrigation water dissatisfaction, vacuum pump packing serious leakage, gate valve or shutter door closed lax. Remedy: first water pressure up, and then pump the body filled with water, and then boot. At the same time check the check valve is tight, pipeline, joint with or without leakage phenomenon, such as the discovery of leakage, after disassembly in the joints coated with oil or blending paint, and tighten the screws. Check fountain pump shaft seal ring, such as serious wear and tear should be replaced with new pieces. Pipeline leaks or leaks. The nuts may not be tightened during installation. If the leakage is not serious, can be leaking or leaking in the local smear cement, or coated with asphalt oil mixing slurry. Temporary repairs can be applied with wet or soft soap. If the water leakage in the joints, you can use a wrench to tighten the nut, such as serious leakage must re-disassembly, replacement of cracked pipe; lower head, fountain pump nozzle pressed into the water 0.5m.
5, severe vibration
Mainly for the following reasons: unbalanced electric rotor; coupling with poor; bearing wear bending; rotating part of the parts loose, broken; pipe stent is not strong and other reasons. Can be taken to adjust, repair, reinforcement, alignment, replacement and other methods to deal with. The above is a common cause of fountain pump failure, not all of the reasons, the practice of dealing with failure, due to practical analysis, should follow the principle of first outside, not to blindly operate.
6, matching power motor overheating
There are four reasons:
First, the power source of the reasons: the voltage is too high or low, under a specific load, if the voltage range should be in the range of +10% to -5% of the rated value will cause the motor overheating; power three-phase voltage asymmetry, Phase-to-phase voltage interphase unbalance of more than 5%, will lead winding overheating; phase operation, experience shows that more than 85% of the rural motor is burned due to lack of phase operation caused by motor phase protection device should be installed.
Second, the fountain pump reasons: the choice of power is not complete, small horse-drawn carts, motor overload operation for a long time, so that the motor temperature is too high; start too frequently, fixed or short-time intermittent work of the motor system for continuous work. Should limit the number of starts, the correct choice of thermal protection, according to the calibration of the motor using the quota.
The stator windings are short-circuit, inter-turn short-circuit or local grounding, light when the local overheating of the motor, in severe cases when the insulation is not connected to the motor, Burnout; squirrel cage rotor broken or defective, the motor running 1 to 2 hours, the core temperature increased rapidly; ventilation system failure, should check whether the fan is damaged, the direction of rotation is correct, whether the ventilation duct blockage; Eccentric cleaning chamber so that the stator and rotor core phase wiping metal impact sound, the rapid increase in core temperature, a serious electric motor smoke, and even coil burned.
Fourth, the working environment reasons: the motor winding damp or dust, oil, etc. attached to the winding, resulting in lower insulation. The insulation resistance of the motor should be measured and cleaned, dried; the ambient temperature is too high. When the ambient temperature exceeds 35 ℃, the inlet air temperature is high, the motor temperature is too high, should try to improve their working environment. Such as scaffolding shade. Note: For reasons of electrical failure, should obtain professional qualification certificate of electrical maintenance, knowledgeable people can not blindly repair, to prevent the occurrence of personal injury accidents.
7, the fountain pump is not on the water or a small amount of water
First look at the fountain pump at this time running the current and the normal running time of the current difference. If the running time than usual small (basically the current is usually 2/3), then there is impeller wear, the pump head of the top of the check valve clogging and other issues. If the peacetime and current as large, then the tube pad leakage, pipe leakage, pump leakage and other issues. If the current is greater than the normal running time, then basically can be identified is the wearing parts wear problems. Also add that the cable if broken, then the water is usually the same as with the usual, but the current will become larger. 3 phase 380V motor current is generally 2.2A. The above reasons as long as the regular maintenance of deep well pump repair personnel can check out
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