Maintenance - DeWalt DCPW550 Instruction Manual

English
Speed Selector (Fig. A, K)
This power cleaner gives you the choice to operate at a lower
pressure for more delicate jobs, or accelerate the power
cleaner speed for high‑performance cleaning.
To accelerate, pull the speed selector
main handle 1 into the "HI" position. This mode is best for
applications that need higher PSI.
For low pressure, push the speed selector forward toward
the spray wand into the "LO" position. This mode is best
8
for larger projects that require more time to complete.
nOTE: When in "HI" mode, runtime will be decreased as
compared to when pressure cleaner is in "LO" mode.
Pressure Washing
Preparing Surface for Cleaning
• Remove objects from the area which could create
a hazard.
• Ensure that all doors and windows are closed tight. Protect
all plants and trees in the adjacent area with a drop cloth
ensuring that they will not be harmed by any overspray.
• Pre‑rinse cleaning area with fresh water.
• Use only detergents formulated for pressure washers.
• Always test detergent in an inconspicuous area before use.
Preparing Power Cleaner Unit for Use

DANGER: Risk of fluid injection and laceration.
When using the high‑pressure setting, DO NOT allow
the high‑pressure spray to come in contact with
unprotected skin, eyes, or with any pets or animals.
Serious injury will occur.

CAUTION: Before operation:
• Connect the water supply to the power cleaner.
For instructions on connecting the water supply
to the power cleaner, please refer to Attaching
garden or suction hose under Assembly
and Adjustments.
• Connect the pressure spray wand, soap bottle,
or other attachment. For instructions on
connecting the pressure spray wand, please
refer to To Attach the spray Wand, soap
Bottle or other Attachment under Assembly
and Adjustments.
Preparing the Power Cleaner (Fig. L)
iMPORTAnT: Disengage the trigger lock‑off
trigger 6 and hold the trigger for 30 seconds to purge the
system of air. If air is still found in the water stream, continue to
run water through the spray handle.
1. Disengage the trigger lock‑off
2. Squeeze the trigger 6 .
Cleaning a Surface (Fig. L)

WARNING: Risk of injury from spray. Always engage
the trigger lock when gun is not in use. Failure to do so
could cause accidental spraying.
12
19 back toward the
4 , squeeze the
4 .
1. To start the power cleaner, disengage the trigger
lock‑off 4 and squeeze the trigger
nOTE: The best angle for spraying water against a
cleaning surface is 45 °. Spraying head on tends to cause
dirt particles to embed in the surface. When working on
vertical surfaces, it is best to apply detergent starting at
the bottom and working upwards which will prevent the
detergent from sliding down and causing streaks.
2. To stop the power cleaner, release the trigger.
nOTE: Excessive pump pressure may be the result of a
clogged nozzle or brass coupling. Always turn off the power
cleaner and remove the battery before attempting to unclog
a nozzle or brass coupler.

WARNING: Never draw from water that contains
chemicals. Only draw from fresh water sources.
Shutdown (Fig. A)
1. To stop the power cleaner, release the trigger and remove
the battery.
2. Turn off water at the faucet.
3. Discharge residual pressure by squeezing the trigger
until no more water comes out of the spray wand
4. Disconnect the garden hose from the water intake
drain hose.
5. Remove garden hose from power cleaner by pulling
back the collar on the quick connect hose adapter and
removing it from the quick connect filter.

MAINTENANCE


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can cause injury.
Cleaning

WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1 approved eye
protection when performing this procedure.

WARNING: Never use solvents or other harsh
chemicals for cleaning the non‑metallic parts of the
tool. These chemicals may weaken the plastic materials
used in these parts. Use a cloth dampened only with
water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into a liquid.
Nozzle (Fig. A, H)
If the nozzle becomes clogged with foreign materials, such as
dirt, excessive pressure may develop. If the nozzle becomes
partially clogged or restricted, the pump pressure will
pulsate. Clean the nozzle immediately.
1. Shut off the power cleaner
water supply.
2. Pull trigger 6 on main handle
water pressure.
3. Remove the nozzle from the spray wand
the quick connect collar 9
6 .
6
8 .
3 and
2 and turn off the
1 to relieve any
8 by pulling
toward the spray wand.