Dewalt DH4240B Instruction Manual - Page 12

Pressure Adjustments, Spray Wand Nozzles Fig. 1

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English 9. The pressure washer is now ready for handling. Make sure to follow the Owner's Manual instructions before starting the pressure washer. OPERATION Pressure Adjustments The pressure setting is preset at the factory to achieve opt­i­mum pres­sure and cleaning. To lower the press­ ure, follow these instructions. 1. Back away from the surf­ace to be cleaned. The further away you are, the less the pressure will be on the surface to be cleaned. 2. Change to the 40˚ nozzle (white). This nozzle delivers a less powerful stream of water and a wider spray pattern. Refer to Spray Wand Nozzles. NOTICE: DO NOT attempt to increase pump pressure. A higher pressure setting than the factory set pressure may damage pump. 3. Reduce the speed of the gasoline engine (RPM). Slow the engine down and the water pressure will go down with it. Spray Wand Nozzles (Fig. 1) The nozzles for the spray wand are stored in the nozzle holder (B) on the panel assembly (A). Colors on the panel identify nozzle location and spray pattern. Refer to the following chart to choose the correct nozzle for the job to be performed. Nozzle Color Spray Pattern Uses Surfaces* 0˚ Red powerful pinpoint for very intense cleaning metal or concrete; DO NOT use on wood Yellow Green White Black 15˚ intense metal, concrete cleaning of or wood small areas 25˚ intense metal, concrete cleaning of or wood larger areas 40˚ covers wide metal, concrete, areas of wood or vinyl cleaning low pressure applies cleaning metal, concrete, solutions wood or vinyl * NOTICE: The high-pressure spray from your pressure washer is capable of causing damage to surfaces such as wood, glass, automobile paint, auto striping and trim, delicate objects such as flowers and shrubs. Before spraying, check the item to be cleaned to assure yourself that it is strong enough to resist damage from the force of spray. Changing Nozzles on Spray Wand Danger: Risk of fluid injection. Do not direct discharge stream toward persons, unprotected skin, eyes or any pets or animals. Serious injury will occur. 12

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12
English
9. The pressure washer is now ready for handling. Make sure to fol-
low the Owner’s Manual instructions before starting the pressure
washer.
OPERATION
Pressure Adjustments
The pressure setting is preset at the factory to achieve optimum
pressure and cleaning. To lower the pressure, follow these instruc-
tions.
1. Back away from the surface to be cleaned. The further away you
are, the less the pressure will be on the surface to be cleaned.
2. Change to the 40˚ nozzle (white). This nozzle delivers a less
powerful stream of water and a wider spray pattern. Refer to
Spray Wand Nozzles
.
NOTICE:
DO NOT attempt to increase pump pressure. A higher
pressure setting than the factory set pressure may damage pump.
3. Reduce the speed of the gasoline engine (RPM). Slow the
engine down and the water pressure will go down with it.
Spray Wand Nozzles (Fig. 1)
The nozzles for the spray wand are stored in the nozzle holder (B) on
the panel assembly (A). Colors on the panel identify nozzle location
and spray pattern. Refer to the following chart to choose the correct
nozzle for the job to be performed.
Nozzle Color
Spray Pattern
Uses
Surfaces*
Red
0˚
powerful
pinpoint for
very intense
cleaning
metal or
concrete;
DO NOT use
on wood
Yellow
15˚
intense
cleaning of
small areas
metal, concrete
or wood
Green
25
˚
intense
cleaning of
larger areas
metal, concrete
or wood
White
40
˚
covers wide
areas of
cleaning
metal, concrete,
wood or vinyl
Black
low pressure
applies cleaning
solutions
metal, concrete,
wood or vinyl
*
NOTICE:
The high-pressure spray from your pressure washer
is capable of causing damage to surfaces such as wood, glass,
automobile paint, auto striping and trim, delicate objects such
as flowers and shrubs. Before spraying, check the item to
be cleaned to assure yourself that it is strong enough to resist
damage from the force of spray.
CHANGING NOZZLES ON SPRAY WAND
DANGER:
Risk of fluid injection. Do not direct discharge stream
toward persons, unprotected skin, ey
es or any pets or animals.
Serious injury will occur.