Simplex STS DAY TANK, Manual

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No Fuel
Delivered
Insufficient
Fuel Delivered
Rapid Pump
Wear
Pump Delivers
for Short Period
and Quits
Pump Requires
too Much
Power
Noisy
Operation
1. Pump not primed.
2. Lift is too high.
3. Rotation direction incorrect.
4. Check valve installed backwards.
1. Air leak at inlet.
2. Defective solenoid valve or check valve.
3. Lift too high.
4. Pump worn.
5. Inoperative foot valve.
6. Piping improperly installed.
7. Fuel strainer plugged.
1. Dirt or grit in fuel.
2. Pipe strain on pump causing bind.
3. Worn pump/motor coupler.
4. Pump has been run dry or with insufficient fuel.
1. Leak at inlet.
2. End of inlet not deep enough.
3. Air or gas in fuel.
4. Supply exhausted.
5. Vaporization of fuel at inlet.
6. Air or gas in inlet line.
7. Sand or abrasives in fuel.
1. Air in plumbing lines.
2. Liquid heavy or too viscous.
3. Bent pump shaft, binding rotating element.
4. Misalignment of pump/motor coupler.
1. Insufficient fuel supply.
2. Air leaks in the inlet pipe.
3. Air or gas at the inlet connection.
4. Pump and motor out of alignment.
5. Worn out spider coupling.
6. Pump coupler out of balance.
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