1, can not start
Should first check the power supply situation: header is solid; switch contact is closely; fuse is blown; whether the lack of equal-phase power supply. If open circuit, poor contact, fuse, phase, reasons should be identified and timely repair. Second, check whether it is the pump itself to mechanical failure, common causes are: packing too tight or debris between the impeller and the pump is stuck and blocked; shaft, bearings, reducing the drain ring rust live; severe bending the shaft. Remedy: relax fillers, clear flume; disassemble the pump to clear debris, rust; remove the shaft correction or replacement of the pump shaft.
2, heat pumps
Reason: bearing damage; Rolling cover the gap is too small or bracket; shaft bending or two-axis misalignment; tape too tight; lack of oil or oily bad; balancing holes on the impeller clogged impeller out of balance, increased to side thrust. Remedy: Replace the bearings; removal of the back cover, between the bracket and the bearing installation gasket; investigation or adjustment shaft concentricity two axes; loosen the tape proper tightness; filling a clean butter, butter bearing accounts within about 60% voids; clear balance hole blockage.
3, less traffic
This is because: Power Speed is not complete or belt slippage, so the low speed; axial flow blade installation angle is too small; insufficient lift, long lines or pipes have a right angle bend; Suction high; bottom valve, pipeline and partial clogging impeller or impeller defect; severe water outlet pipe. Remedy: Restore the rated speed, remove grease belt, adjust the belt tightness; adjusted the blade angle to reduce pump installation location, shorten or change the curvature of the line pipe; seal leak at the pump, compression packing; clear blockage and replacement of the impeller; replace minus drain ring, plug leaks.
4, no water absorption
The reason is that the pump body with air or gas into the water volume, or the bottom valve closed lax irrigation water dissatisfaction, vacuum packing serious leakage, gate or shoot the door shut lax. Remedy: First the pressure up, and then filled with water pump, then boot. Also check whether the tight check valve, piping, fittings without leakage phenomenon, such as the discovery leak, after the demolition greased or blending paint in the joints, and tighten the screws. Check the water pump shaft seal ring, such as badly worn parts should be replaced with new. Pipeline leak or leaks. When possible installation nut Undertightening. If the leak is not serious, may leak or leaks in places smear cement, oil or coated with asphalt mixing grout. Temporary repairs may put some wet mud or soft soap. If the leaks in the joints, you can use a wrench to tighten the nut, such as severe water must be re disassembly, replace the cracked pipe; reduce lift, the pump nozzle pressed into underwater 0.5m.
5, severe shock
There are several reasons: electric rotor imbalance; couplings combine bad; bearing wear bending; rotating part of the loose parts, broken; pipe bracket is not strong and other reasons. Can be taken separately adjust, repair, strengthening, straightening, replacement and other ways to deal with. Above is a common cause of pump failure, not all of the reasons, in practice deal with failure, because the actual analysis, should follow the principles of the first outside Houli was not to blind operation. |
