Dewalt DXPW3400PR Instruction Manual - Page 21

CU: Cleaning Units. GPM multiplied by psi. (GPM x PSI = CU) Fuel valve lever: Opens/closes connection between fuel tank and carburetor. GPM*: Gallons Per Minute. The unit of measure for the flow rate of water. PSI*: Pounds per Square Inch. The unit of measure for water pressure. Also used for air pressure, hydraulic pressure, etc. * Complies with CETA Performance Standard CPC-100. Values are within manufacturing tolerance of +/- 10%. kPa (kilopascal): Metric pressure measurement. 1 kilopascal equal 1000 pascals. Quick-connect spray wand: Allows the user to quickly change out high pressure nozzles. Refer to Spray Wand Nozzles. English Thermal relief valve (Manual mode only): When the temperature inside the pump rises too high the valve will open and release a gush of water in an effort to lower the temperature inside the pump. The valve will then close. Cold water supply: All pressure washers must have a source of cold water. The minimum requirements for a water supply are 20 psi (138 kPa) and 5 gallons per minute. PRESSUREADY® system mode: This mode uses an advanced electronic system to stop and start the pressure washer when the spray gun trigger is squeezed and released. The PRESSUREADY® system also communicates with the user through fault codes to help diagnose and solve issues with the pressure washer. Manual mode: This mode starts the pressure washer without the use of the battery and the PRESSUREADY® system. Troubleshooting Guide This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a FNA authorized service center or other qualified service personnel. Problem Troubleshooting Key # Engine will not start 1, 2, 3, 4, 5, 6, 7, 8, 10, 16, 29, 30 (refer to the engine's instruction manual for further engine troubleshooting) No or low pressure (initial use) 9, 10, 11, 12, 13, 14, 15, 16 Will not draw chemical/cleaning soaps 16, 17, 18, 19, 20, 21 No or low pressure (after period of normal use) 22, 23, 24 Water leaking at gun/spray wand connection 25, 26 Water leaking at pump 25, 26, 27, 28 Pump Pulsates 12 Key # 1 2 3 4 Troubleshooting Key # POSSIBLE CAUSE No fuel. Low or no oil. NOTE: This pressure washer is equipped with a low oil sensor. If the oil is low or the unit is not level the unit will shut off or fail to start. Manual mode only: Pressure builds up after two pulls on the recoil starter or after initial use. POSSIBLE SOLUTION Add fuel. Add required amount of oil. Ensure the pressure washer is placed on a level surface. Squeeze spray gun trigger to relieve pres­sure. Choke in the OPEN position. Move choke to the CLOSED pos­ i­tion. 5 Spark plug wire not attached. Attach spark plug wire. 6 Engine ON/OFF switch in OFF po­si­tion. Place engine ON/OFF switch in ON position. 7 Choke in the CLOSED position on a hot engine or an engine Move choke to the OPEN pos­ i­tion. that has been exposed to thermal heat for a long period of time. 8 Fuel valve OFF. Move the fuel valve to the ON position. 9 Spray wand not in high pressure. See Spray Wand Nozzles under Operation. 10 Low water supply. Water supply must be at least 5 GPM @ 20 psi (138 kPa). NOTE: The pressure washer can not start in PRESSUREREADY® system mode with low water supply. 11 Leak at high pressure hose fitting. Repair leak. Apply sealant tape if necessary. 19