Causes and troubleshooting methods of corrosion resistant submerged pumps

Causes and troubleshooting methods of corrosion resistant submerged pumps

1. Pump filling slow

Reason: There is a large gap between the front lining plate and the impeller, the water outlet pipe cannot seal the air, and the exhaust is full.

Solution: Adjust the gap, adjust the water outlet pipeline, and install a vacuum pumping device.

2. Low outlet pressure and flow rate

Reason: There is air inside the pump, there is a large gap between the impeller and the front lining plate, 

the clutch is not tightly closed, and the impeller or lining plate is worn.

Solution: Empty the gas inside the pump, adjust the clearance, adjust the clearance of the clutch friction plate, and replace the impeller or lining plate.

3. Pump wear is fast

Reason: Poor construction environment (large particles), long transportation distance, and long inlet pipeline.

Solution: Replace the sand field, add an afterburner unit, shorten the length of the inlet pipe, and reduce cavitation.

4. Water pump vibration

Reason: The pump shaft is not concentric with the diesel engine (or motor), the impeller is unbalanced, and the bearings are damaged.

Solution: Adjust the concentricity, conduct balance testing on the impeller, and replace the bearings.

5. Pump does not absorb water

Reason: Insufficient water injection, inability to discharge air from the pump, leakage in the suction pipe, and large gap between the front lining plate and the impeller.

Solution: Continue to inject water, check for air leakage in the pipeline, and adjust the clearance between the impeller and the front lining plate.

6. The impeller journal wears quickly

Reason: Low head of high-pressure water pump, misalignment of packing, and misalignment between pump shaft and rear cover.

Solution: Replace the high-pressure pump with a head higher than that of the corrosion-resistant submerged pump, replace the packing, and adjust the concentricity.

By katreenipump