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Problem
Excessive power
consumption
Rapid pump wear
Possible Cause
Fluid viscosity higher than
specified
Gear clearances insufficient
for viscosity
Differential pressure greater
than specified
Abrasives in fluid
Corrosion wear
Extended dry running
Discharge pressure too high
Misalignment
P. 12
Remedy
Heat fluid to reduce
viscosity
Decrease pump speed
Increase driver horsepower
Purchase gears trimmed for
the correct viscosity
Increase pipe diameter
Install suction strainer
Materials of construction
not acceptable for fluid
being pumped
Install power sensor to stop
pump
Increase pipe diameter
Decrease pipe run
Align pump and motor
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