Graco SoloTech i6 Repair And Parts Manual page 9

Problem
Problem Problem
Low inlet pressure.
Low flow.
Poor hose life.
Hose lubricant is leaking from the
front cover.
Hose lubricant is leaking from the
hose barb area.
Hose failed because it wrapped
around the roller.
3A3367L
Cause
Cause Cause
The hose has failed.
Inlet line is blocked.
Inlet line is too long or too small.
Viscosity or specific gravity of
pumped fluid is too high.
The hose has failed.
The back pressure is too high for
the combination of fluid viscosity
and cycle rate.
Hose is incompatible with the fluid
being pumped.
Hose has failed due to normal
wear.
Excessive pulsations have
weakened the hose.
Outlet pressure is too high.
Solids have settled in the hose.
The cover bolts are not tight
enough.
The cover gasket is worn or
damaged.
Gaskets are missing or worn.
Pump was operated against a
closed outlet valve or blocked line.
Troubleshooting
Solution
Solution Solution
Replace with a new hose and
lubricant.
Clear any obstructions in the inlet
line.
Try to locate the pump as near
to the fluid source as possible.
Oversize the inlet piping when
possible.
Consult your Graco distributor for
suitable operating conditions for
your pump.
Replace with a new hose and
lubricant.
Reduce back pressure and/or
increase your cycle rate.
Consult your Graco distributor to
see if you have the correct hose
for your application.
Replace.
If you pump is equipped with a
pulsation dampener, adjust its
pressure. If you do not have a
dampener, consult your Graco
distributor.
Check items listed in "High outlet
pressure." Running the pump
against a closed valve, even for a
short amount of time, may damage
the hose.
Flush the pump and hose prior to
turning the pump off.
Refer to torque specifications in
Install the Front Cover, page
Replace.
Replace.
Replace hose. Check pressure
relief system. Check that valves
are open. Clear any blockages.
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