DeWalt A16505 - Manual (Page 12)

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• NEvER turn water supply off while pressure washer engine is
running or damage to pump will result.
• DO NOT stop spraying water for more than two
T
minutes at a time. Pump operates in bypass
mode when spray gun trigger is not pressed.
When the temperature inside the pump rises
too high the thermal relief valve (T) will open
and release a gush of water in an effort to lower
the temperature inside the pump. The thermal
relief valve will then close. If pump is left in bypass mode for
more than two minutes internal components of the pump can
be damaged.
start-uP ProceDure
1. In a well-ventilated outdoor area, add fresh, high-quality, unleaded
gasoline with a pump octane rating of 86 or higher. Do not overfill.
Wipe up spilled fuel before starting the engine. Refer to engine
instruction manual for correct procedure.
. Check engine oil level. Refer to the engine instruction manual for
correct procedure.
3. Connect the water hose to the water source. Turn the water source
on to remove all air from the hose. When a steady stream of water
is present, turn the water source off.
4. Verify the filter screen (U) is in water inlet of
U
pump. The cone side faces out.
5. Connect the cold water source (V) to pump
inlet.
note: Water source must provide a minimum
of 5 gallons per minute at 0 PSI.
WARNING: To reduce the possibility of con-
tamination always protect against backflow when connected to a
potable water system.
6. Connect high-pressure hose (C) to pump
V
C outlet.
7. If applying a chemical or cleaning solution,
refer to chemicals and cleaning
solvents.
8. Turn the water source on.
cAutIoN: Risk of property damage. Failure
to do so could cause damage to the pump.
9. Remove all air from the pump and high pressure hose by depress-
ing trigger until a steady stream of water is present.
10. Start engine. Refer to the engine instruction manual for correct
procedure.
WARNING: Risk of unsafe operation. If engine does not start
after two pulls, squeeze trigger of gun to relieve pump pressure. Pull
starter cord slowly until resistance is felt. Then pull cord rapidly to
avoid kickback and prevent hand or arm injury.
11. Depress trigger on gun to start water flow.
WARNING: Risk of unsafe operation. Stand on a stable
surface and grip gun/wand firmly with both hands. Expect the gun to
kickback when triggered.
1. Release trigger to stop water flow.
DANGeR: Risk of injury from spray. Engage the
trigger lock (W) when gun is not in use to prevent
accidental spraying.
13. Adjust spray for the task being performed by
changing quick connect nozzle. Refer to spray
Wand nozzles.
Shutting Down
1. If chemicals were applied, place the chemical hose into a
container of clean water and draw clean water through chemical
injection system to rinse system thoroughly.
W