Wacker Neuson PTS 4V, Operator'S Manual

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PTS 4V Troubleshooting
6 Troubleshooting
Problem / Symptom Reason / Remedy
Pump does not take in
water.
„
Not enough priming water in housing.
„
Engine speed too low. Adjust speed.
„
Strainer plugged. Clean strainer.
„
Suction hose damaged. Replace or repair suction
hose.
„
Air leak at suction port. Check that fittings are tight and
sealing properly.
„
Pump too high above water.
„
Debris collecting in pump housing. Clean pump
housing.
„
Too much clearance between impeller and insert.
Pump takes in water; little or
no discharge.
„
Engine speed too low. Adjust engine speed.
„
Suction strainer partially plugged. Clean suction
strainer.
„
Impeller worn. Adjust clearance by adding shims or
replace impeller.
„
Volute insert worn or damaged. Adjust clearance or
replace volute insert.
Suction hose leaks at inlet.
„
Clamps are not sealing properly. Tighten, replace, or
add clamps.
„
Suction hose diameter is too large.
„
Suction hose is damaged.
Discharge hose does not
stay on coupling.
„
Pressure may be too high for clamps being used. Add
another clamp.
„
Discharge hose kinked or end blocked. Check
discharge hose.
Impeller does not turn;
pump is hard to start.
„
Impeller jammed or blocked. Open pump cover and
clean dirt and debris from inside of pump housing.
„
Impeller and insert binding. Adjust clearance by
removing shim from behind insert.
Engine does not start or
stops during operation.
„
Debris in pump housing, blocking impeller.
„
Low oil level in engine.
„
Impeller rubbing on insert.