Stanley Black & Decker TP03 user manual Troubleshooting, Problem Cause Solution

TROUBLESHOOTING

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 cor- rect hydraulic flow and pressure as listed in the table. Use a flowmeter know to be accurate. Check the flow with the hydraulic fluid temperature at least 80 °F/27 °C.

PROBLEM	CAUSE	SOLUTION
Pump will not start.	No hydraulic fluid flow or	Turn on power unit and check that 7–9 gpm/26–
	pressure.	34 lpm at 1500–2000 psi/105–140 bar is
		available at the trash pump.
	Defective couplers.	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 couplers.
	Impeller jammed with debris.	Clean the pumping chamber.
	Impeller rubbing against wear	Check and adjust the impeller clearance.
	plates.
	Defective power module.	Repair or replace the power module.
Poor pump performance.	Hydraulic flow reversed.	Check that the hoses are correctly connected to
		the pump motor ports. The female coupler should
		be connected to the “IN” port. The return fluid
		must never flow through a reversing valve.
	Improper hydraulic fluid flow.	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 flow can result in a 50%
		decrease in pump performance. 8 gpm/30 lpm is
		the best circuit flow.
	Trash pump submersed in	Lift the pump from the bottom of the hole or
	sediment.	chamber. Use a flat support under the pump if
		necessary.
	Trash pump inlet restricted.	Remove restriction and thoroughly clean.
	Discharge hose kinked or	Straighten the hoes. If the hose must bend at the
	restricted.	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.
	Discharge hose too small.	Use a 3-inch diameter hose.
	Water lift too high.	Lower the outlet end of the discharge hose.
	Impeller worn or damaged.	Check impeller for damage and excessive wear.
		Replace if necessary.
	Wear plates worn or damaged.	Check wear plates for damage and excessive
		wear. Replace if necessary.
Hydraulic fluid in discharge	Motor shaft seal failure.	Replace the motor shaft seal.
flow.		Ensure power unit is delivering 7–9 gpm/26–34
		lpm

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