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    1.can not start

    First check the power supply situation: connection is secure; whether the switch contacts close; whether the fuse fuse; if the power of three-phase equal. If open circuit, poor contact, fuse, lack of phase, should identify the reasons and timely repair. Secondly check whether the pump itself of mechanical failure, common reasons: packing too tightly or between the impeller and the pump body and the plug was stuck debris; shaft, bearings, reducing leakage ring rust live; severe bending shaft etc.. Method: relax fill, dredge flume; disassemble pump body to remove debris, rust; calibration shaft removed or replacement of the pump shaft.

    2.heat pumps

    Reason: bearing damage; rolling bearing or bracket cover the gap is too small; pump shaft bending or two different heart; tape is too tight; lack of oil or oily bad; impeller balance holes to plug up, the impeller out of balance, increased to side thrust. Method: the replacement of bearings; removal of the rear cover, gasket between the bracket and the bearing seat; investigation of two axle shaft or adjust the concentricity; appropriate loosen the belt tightness; add clean butter, butter accounted for a bearing gap of 60%; to remove the plug hole material balance.

    3.flow is insufficient

    This is because: dynamic speed does not support or the belt slipping, so that low speed axial flow pump; blade installation angle is too small; head insufficiency, too long or pipeline right angle pipe bending; suction side; at the end of the valve, pipe and impeller impeller partially plugged or defect; the outlet pipe Water Leakage serious. Troubleshooting: restore rated speed, removing grease belt, adjust the belt tightness; adjust the blade angle, reduce pump installation, reduce or change the bending pipe; water pump seal leakage, compression packing; plug removal, replacement of the impeller; the replacement of the leakage reduction ring, plug Water Leakage at.

    4.no water absorption

    Because the pump body with air or gas inlet, or the bottom valve is not tightly closed irrigation water dissatisfaction, fill a serious vacuum leak, valve or door is not tightly closed. Remedy: first water pressure up, then pump filled with water, and then boot. Also check the check valve is tight, pipes, joints have no leakage phenomenon, such as leak gas, removing after paint in joints coated with oil or adjust, and tighten the screws. Check the water pump shaft seal ring, such as wear parts should be replaced. Water Leakage or leakage of pipeline. May be installed when the nut is not screwed tight. If the leakage is not serious, can be applied in the cement leakage or Water Leakage place, or coated with asphalt mixing the slurry oil. Temporary repairs can be coated more shini or soft soap. If the joints Water Leakage, then tighten the nut wrench can be used, such as Water Leakage serious must be re disassembly, replacement of the cracked pipes; reduce the head, will pump nozzle pressed under the water 0.5m.

    5.the violent vibration

    There are several reasons: non balance electric rotor; coupling with bad; bearing wear bending; the rotating part of the loose parts, pipe rupture; stent is not strong reasons. Can be taken to adjust, repair, reinforcement, straightening, replacement of such approach. This situation is caused by the fault of the pump, and not all reason, practice in fault, because the actual analysis, should follow the principle of first after the operation, not to blind.
    6.auxiliary power motor overheating

    There are four reasons. One reason is the power supply: high or low voltage, under specific load, if the voltage fluctuation range in the rating of + 10% to - 5% motor will cause overheating; power three-phase voltage asymmetry, power three-phase voltage phase unbalance degree more than 5%, can cause heating winding; phase operation, experience shows that farm motor burned more than 85% because of missing phrase operation, response to motor installation phase lack protection device. Two reasons: pump is the power not complete, a small horse drawn carts, motor overload a long time running, the motor temperature is too high; the motor start too frequent, quota for short-time or intermittent working system work continuously. Should limit the number of activated, the correct selection of thermal protection, according to a fixed calibration motor use. Three is the cause of motor itself: connection errors, will be a triangle shape error to form a Y shape, the motor temperature rises rapidly; the stator winding inter turn short circuit is short, or the local ground, light motor overheating, serious burn insulation; squirrel cage rotor broken bar or defect, motor operation 1 to 2 hours, the core temperature rises rapidly; failure of ventilation system, should check whether the fan is damaged, the rotation direction is correct, the ventilation duct is blocked; bearing wear, sweeping the eccentricity of rotor stator and rotor core rub a clang, core temperature rises rapidly, serious when motor smoke, even the coil burnt. Four reasons: working environment motor winding damp or dust, smeary adherent to the winding, resulting in reduced insulation. Motor insulation resistance should be measured and cleaning, drying treatment; high temperature environment. When the environment temperature is over 35 ℃, inlet air temperature is high, can make the motor temperature is too high, should try to improve the working environment. Such as scaffolding shade. Note: for electrical fault reasons, please obtain professional qualification certificate of electrical repair, have a superficial knowledge of people can not be blind repair, prevent the occurrence of accidents.

    7.deep water submersible water or not small

    First look at the current differential current pump at operation and common operation time how much. If the run time than usual small (basically is usually the current 2\3), then have the pump impeller, head of the above check valve jam. If the current peace as big, so is the tube pad Water Leakage, pipe, pump body Water Leakage Water Leakage etc.. If the current operation than usual, so basically can sure is worn parts. In addition in addition, cable if damaged, water is as usual, but the current becomes large. The 3 380V motor current is generally 2.2A. For as long as is often more repair deep well pump repair personnel can check out.