Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
PT / PG / PD REPAIR PG SERIES PUMPS 4<br />
4.20 Troubleshooting<br />
Problem / Symptom<br />
Pump does not take in water.<br />
Pump takes in water, little or no discharge.<br />
Suction hose leaks at inlet.<br />
Discharge hose does not stay on coupling.<br />
Impeller does not turn; pump is hard to<br />
start.<br />
Reason / Remedy<br />
1. Not enough priming water in housing.<br />
2. Engine speed too low. Adjust speed.<br />
3. Strainer plugged. Clean strainer.<br />
4. Suction hose damaged. Replace or repair hose.<br />
5. Air leak at suction port. Check that fittings are tight and<br />
sealing properly.<br />
6. Pump too high above water.<br />
7. Debris collecting in pump housing. Clean pump housing.<br />
8. Too much clearance between impeller and volute.<br />
1. Engine speed too low. Adjust speed.<br />
2. Suction strainer partially plugged. Clean strainer.<br />
3. Impeller worn. Adjust clearance by adding shims or<br />
replace impeller.<br />
4. Volute worn or damaged. Adjust clearance or replace<br />
volute.<br />
1. Clamps are not sealing properly. Tighten, replace, or add<br />
clamp.<br />
2. Hose diameter is too large.<br />
3. Hose is damaged.<br />
1. Pressure may be too high for clamps being used. Add<br />
another clamp.<br />
2. Hose kinked or end blocked. Check hose.<br />
1. Impeller jammed or blocked. Open pump cover and clean<br />
dirt and debris from inside of pump housing.<br />
2. Impeller and volute binding. Adjust clearance by removing<br />
shim(s) from behind impeller.<br />
4-17
Change language