Troubleshooting
TroubleshootingTroubleshooting
Troubleshooting
NOTE:NOTE:
NOTE:
Check all possible remedies before disassembling the pump.
ProblemProblem
Problem
CauseCause
Cause
SolutionSolution
Solution
Inlet or outlet pipe diameters too
small.
Increase pipe size or add pulsation
dampeners.
High pump speed.
Reduce speed of pump.
Inlet or outlet connections not
properly anchored.
Secure piping.
Hammering in piping.
High inlet or outlet pressures. Add pulsation dampeners.
Low lubricant level. Add hose lube to the proper level.
Improper lubricant.
Use only Graco hose lube for low
temperature operation.
Pumped uid temperature too
high.
Consult your Graco distributor for
maximum temperature limits of
your pump.
High pump temperature.
High pump speed/pump
undersized.
Reduce the pump speed or switch
to a larger pump.
Blocked outlet line.
Clear any obstructions in the outlet
line.
Narrowed pipe diameter due to
settled solids.
Determine if solids have settled
in piping and ush/remove as
required.
High outlet pressure.
Viscosity or specic gravity of
pumped uid too high.
Consult your Graco distributor for
suitable operating conditions for
your pump.
Failed hose.
Check to see if the hose has failed.
If so, replace with a new hose and
lubricant.
Blocked inlet line.
Clear any obstructions in the inlet
line.
Inlet line too long or too small. Try to locate the pump as near
to the uid source as possible.
Oversize the inlet piping when
possible.
Low inlet pressure.
Viscosity or specic gravity of
pumped uid too high.
Consult your Graco distributor for
suitable operating conditions for
your pump.
Low ow.
Failed hose.
Check to see if the hose has failed.
If so, replace with a new hose and
lubricant.
63A1940G
