Campbell Hausfeld PW2770 Manual De Instrucciones página 6

Operating Instructions and Parts Manual
Operation
SURFACE PREPARATION
The following cleaning procedure will help you organize your
cleaning task and ensures that you will achieve the best results
in the shortest amount of time. Gallons Per Minute (GPM), the
more water per minute can mean faster cleaning, especially when
washing off materials like mud and road tar. Remember to use the
spraying / cleaning techniques mentioned in the following section.
Before starting a pressure washer cleaning job, prepare the surface
you intend to clean. Clear furniture from the area and make sure that
all windows and doors are closed tightly. Also, protect all plants and
trees near the cleaning area with a drop cloth. A covering ensures
that your plants won't be sprayed by the detergents.
START UP
ALWAYS use this start up procedure to ensure that the unit is
started safely and properly.
If water has frozen in the pressure washer, thaw
the pressure washer in a warm room before starting.
DO NOT pour hot water on or into the pump; internal parts will be damaged.
1. Check engine oil levels. Add oil as necessary.
2. Check fuel level. Add unleaded gasoline (rated 86 octane or
higher) as required.
DO NOT refuel a hot engine. Refueling a hot engine
could cause a fi re. Use only fresh, clean regular or
unleaded gasoline. Close the fuel shutoff valve during refueling.
3. Attach a garden hose to the inlet side of the pump and connect
it to the water supply. Use a hose with an internal diameter (I.D.) of
5/8 in. (1.58 cm) and a length of 50 ft. (15 m) or less.
Some local plumbing codes require backfl ow
prevention when connecting to a fresh water supply.
Install a backfl ow preventer upstream from the pump if necessary.
a. If inlet water pressure is over 100 psi, install a regulating
water valve at the garden hose connection.
b. Do not exceed 100˚ F (38˚ C) inlet water temperature.
NOTE: The inlet water supply must have a minimum flow rate of 5
gpm (19 lpm).
4. Turn the water supply ON.
Never run the unit dry. Be sure the water supply is
completely turned on before operating the unit.
5. Trigger the gun until water sprays from the nozzle indicating that
all air is purged from the system.
6. Open the fuel shutoff valve by turning the lever to the right /
"ON" position. Close the choke (if the engine is cold) by moving
the choke lever fully to the left. Move the throttle fully to the left
to the "Run" or "Rabbit" position. Turn the ON / OFF switch to
the "ON" position (see Figure 13).
7. Start the engine: Grasp the starter rope and brace one foot on
the chassis. While squeezing the trigger on the gun, pull the
starter rope rapidly and firmly. Continue holding the rope as it
returns. Repeat these steps until the engine starts.
When pulling the starter rope, make sure to
keep your hand and arm clear of the engine and cart
components.
Never let the starter rope return by itself.
Doing so could jam the recoil system.
8. If the engine does not start after two or three pulls or if the rope
is hard to pull, squeeze the gun trigger to release the pressure that
6
has built up in the high pressure hose. Repeat Steps 7 and
8 until the engine starts.
INITIAL HIGH PRESSURE RINSE
Spray the cleaning surface with water to clear off any dirt
or grime that may have collected on the surface. Doing so
allows the detergent to attack the deep down dirt that has
worked its way into the cleaning surface.
Trigger the gun 3 to 5 times to get any trapped air out of the
system. After the spray becomes constant, you may need
to adjust the pressure.
Pressure Adjustment
Please refer to your
CAT pump manual
for specific pressure
adjustment details.
Adjusting the Spray
Fan Angle
Five quick connect
nozzles are included
with this pressure
washer. The nozzles
have a range of spray
fan angles, ranging
from 0°, narrow high
impact, to a 40° wide
fan spray.
Pressure can also be
adjusted by moving
closer or further away
from the cleaning
surface and by
adjusting the spray fan
angle as shown.
Angle to the Cleaning
Surface
When spraying water
against a surface,
you can generate
maximum impact by
striking the surface
head on. However,
this type of impact can
cause dirt particles to
embed in the surface
and can prevent the
desired cleaning
action.
The optimum angle for
spraying water against
a cleaning surface is
45°.
Spray water against
a surface at a 45°
angle to achieve the
most beneficial impact
force and to efficiently
remove debris (see Figure 16).
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Figure 13 - On/Off switch
Figure 14 - Narrow high impact
stream
Figure 15 - Wide fan pattern
Figure 16 - Optimum angle to cleaning
surface