Troubleshooting - Stanley TP03 User Manual

If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the tool, always make sure the hydraulic power source is supplying the correct
hydraulic fl ow and pressure as listed in the table. Use a fl owmeter know to be accurate. check the fl ow with the hydraulic
fl uid temperature at least 80
PROBLEM
Pump will not start.
Poor pump performance.
Hydraulic fl uid in discharge fl ow.

TROUBLESHOOTING

o o
F/27 C.
No hydraulic fl uid fl ow or pressure.
Defective couplers.
Impeller jammed with debris.
Impeller rubbing against wear plates.
Defective power module.
Hydraulic fl ow reversed.
Improper hydraulic fl uid fl ow.
Trash pump submersed in sediment.
Trash pump inlet restricted.
Discharge hose kinked or restricted.
Discharge hose too small.
Water lift too high.
Impeller worn or damaged.
Wear plates worn or damaged.
Motor shaft seal failure.
CAUSE
14
SOLUTION
Turn on power unit and check that 7-9
gpm/26-34 lpm at 1500-2000 psi/105-140
bar is available at the trash pump.
Check the couplers by connecting them
together with the hydraulic power supply
operating and with the control valve in the
"ON" position. The power supply should
operate without "loading" from the cou-
plers.
Clean the pumping chamber.
Check and adjust the impeller clearance.
Repair or replace the power module.
Check that the hoses are correctly con-
nected to the pump motor ports. The
female coupler should be connected to the
"IN" port. The return fl uid must never fl ow
through a reversing valve.
Check that 7-9 gpm/26-34 lpm at 1500-
2000 psi/105-140 bar is available at the
trash pump. A 20% decrease in fl ow can
result in a 50% decrease in pump perfor-
mance. 8 gpm/30 lpm is the best circuit
fl ow.
Lift the pump from the bottom of the hole
or chamber. Use a fl at support under the
pump if necessary.
Remove restriction and thoroughly clean.
Straighten the hoes. If the hose must bend
at the top of the hole, use a piece of split
rigid conduit with large diameter of the
expanded hose. This keeps the hose from
kinking. Use a 90° 3-inch pipe elbow on
the trash pump outlet if necessary.
Use a 3-inch diameter hose.
Lower the outlet end of the discharge
hose.
Check impeller for damage and excessive
wear. Replace if necessary.
Check wear plates for damage and exces-
sive wear. Replace if necessary.
Replace the motor shaft seal.
Ensure power unit is delivering 7-9
gpm/26-34 lpm