36
A.0100.301 – IM-FIP/08.00 EN (02/2014)
Cause
remedy
Pump is leaking
Pressure too high
Decrease pressure by increasing the
diameter of the pipings and also on any filters
installed. Clean filter if installed
Worn shaft seal
Replace shaft seal
Worn ball bearings, shaft deflection
Replace ball bearings
Common reasons for unnormal wear of the
mechanical seal
• Abrasive liquid
• Liquid is crystallizing
• Sticky liquids
Contact your supplier for further advice.
Insufficient flow
System pressure too high
Increase diameter of the pipings, clean filter if
installed.
Pump too small
Choose other pump size
Worn pump
Replace worn parts
Suction line too small or blocked
Increase diameter
Pump speed too low
Increase pump speed
Air leakage in suction line
Seal the line and the connection ports
Suction hose sucked against tank wall
Angle cut the hose
Diameter of suction/discharge line too small
for specified capacity/viscosity
Increase the diameter of the pipings
