Stainless steel submersible pump common troubleshooting

03 - 05

stainless steel submersible pump common troubleshooting: ( A) Water pump can't start a situation after the closing, motor does not turn and without any noise. Suggesting that circuit impassability, should check whether the power supply circuit breaker at this moment, whether insurance fuse, if no often may be a motor stator winding burn out, should be removed to replace in line again. Another case is closing after motor does not turn accompanied by 'buzzing' sound. This case, it is necessary to stop the machine immediately to check. The reasons are as follows: 1. The stator winding of the power cord or a phase, forming phase operation. 2. The voltage is too low. The reason for this is likely the supply voltage is low, the cable is too long and cross section slants small, small transformer capacity, should be given. 3. A foreign body in the pump body, bearing damage jammed, 'pack axis' and 'killed' wait for a phenomenon, should then puts forward the pump check to clear. （ 2) after the start, not out of the water, seldom or indirectly out of the water. The failure reasons are: 1. Over-current parts such as filter water, water pipe, the diversion shell parts, such as heavy traffic or a water pipe burst. At this time often arise the ammeter reading increases and pointer swing dramatically. It is necessary to stop the machine immediately to check to clear. 2. Motor functioning but less water yield. The reason for this pump configuration is not reasonable, the actual lift compared with water water pump rated head is beyond too much, need to change a higher lift pump. It is possible that the pump reversal, need to dispatch any two inlets relatively. If excessive wear, sealing ring or impeller should be removed to replace in a timely manner. 3. Motor functioning but not out of the water, the main reason is that in the process of pumping water levels fall too much, can be delivery valve are down or put to move below the surface the water pump and a half meters. （ 3) Turning violent vibration noise the reasons are as follows: 1. Impeller fastening bolt looseness, impeller and diversion shell friction and collision caused by pump body, vibration should be hanging out of the water pump, tighten bolts. 2. Thrust bearing wear and friction in the impeller front baffle and diversion tube, ammeter pointer swing dramatically. There is a clear, should be replaced immediately thrust bearing, impeller impeller wear serious when should also be replaced. 3. Motor rotor and pump rotational part itself is unqualified, the balance of the vibration caused by the rotation. Should take out the motor rotor and the pump impeller into action, the static balance test, to the state of equilibrium. 4. Guide bearing wear of pump, shaft in the bearing inner swing, or eccentric wear caused by shaft bending, increase current meter readings at this time, pointer swing, vibration, should immediately stop the replacement of guide bearing or straightening shaft.

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