Troubleshooting
ProblemProblem
Problem
CauseCause
Cause
SolutionSolution
Solution
Chemical incompatibility. Consult your Graco distributor to
see if you have the correct hose
for your application.
Normal wear.
The hose may have failed due to
normal wear. Replace as required.
Failure due to pulsations.
If your pump is equipped with a
pulsation dampener, adjust its
pressure. If you do not have a
dampener, consult your Graco
distributor.
Too high outlet pressure.
Check items listed in “High outlet
pressure.” Running the pump
against a closed valve, even for a
short amount of time, may damage
hose.
Poor hose life.
Settled solids in hose.
Flush the pump and hose prior to
turning the pump off.
Hose lube leaking from front cover. Cover bolts over-tightened.
Refer to torque specications in
Install the Front Cover, page 16.
Lubricant leaks.
Hose lube leaking from hose
clamps.
Pump housing overlled. Check
hose lube level and adjust as
necessary.
Hose failed because it wrapped
around roller.
Pump was operated against a
closed outlet valve or blocked line.
Replace hose. Check pressure
relief system. Check that valves
are open. Clear any blockages.
3A1940G
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