Troubleshooting Guide - DeWalt PRESSUREADY DXPW3400PR Manual De Instrucciones

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.
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
Engine will not start
No or low pressure (initial use)
Will not draw chemical/cleaning soaps
No or low pressure (after period of normal use)
Water leaking at gun/spray wand connection
Water leaking at pump
Pump Pulsates
Key # POssiBLE CAUsE
1 No fuel.
2 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
3
on the recoil starter or after initial use.
4 Choke in the OPEN position.
5 Spark plug wire not attached.
6 Engine ON/OFF switch in OFF po si tion.
7 Choke in the CLOSED position on a hot engine or an engine
that has been exposed to thermal heat for a long period
of time.
8 Fuel valve OFF.
9 Spray wand not in high pressure.
10 Low water supply.
11 Leak at high pressure hose fitting.
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

Troubleshooting Key #
1, 2, 3, 4, 5, 6, 7, 8, 10, 16, 29, 30
(refer to the engine's instruction manual for further engine troubleshooting)
9, 10, 11, 12, 13, 14, 15, 16
16, 17, 18, 19, 20, 21
22, 23, 24
25, 26
25, 26, 27, 28
12
Troubleshooting Key #
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 pres sure.
Move choke to the CLOSED po si tion.
Attach spark plug wire.
Place engine ON/OFF switch in ON position.
Move choke to the OPEN po si tion.
Move the fuel valve to the ON position.
See Spray Wand Nozzles under Operation.
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.
Repair leak. Apply sealant tape if necessary.
ENgLish
19