DeWalt DPD3800 Instruction Manual page 13

• Do NoT stop spraying water for more than
two 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.
2. 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 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 20 PSI (138 kPa).
WARNING: To reduce the possibility of contami-
nation always protect against backflow when con-
nected to a potable water system.
6. Connect high-pressure hose (P) to pump
T
outlet.
7. If applying a chemical or cleaning solution,
refer to chemicals
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. Turn the engine ON/OFF switch (H) to the ON position.
11. Place the fuel valve lever (M) in the ON postion.
12. If the engine is cold, move the choke (K) to the CLOSED position
as shown.
H
WARNING: Risk of unsafe operation. Pull starter grip slowly
13.
until resistance is felt. Then pull starter grip (I) rapidly to avoid
kickback and prevent hand or arm injury.
note: Do not allow the starter grip to snap back. Return it gently
by hand.
U
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.
13
P
and cleaning
V
M
K