Pre-operation
ADJUSTING FAN PATTERN
The angle of spray coming out of the lance
may be adjusted on some lances by rotating
the nozzle. This will vary the spray pattern
from approximately a 0° narrow high impact
stream to a 60° wide fan spray.
( See Figure2)
A narrow stream has high impact force on
the cleaning surface and results in
maximum deep cleaning in a concentrated
area. However, this narrow high impact
spray must be used cautiously, as it may
damage some surfaces.
A wide fan pattern will distribute the impact
of the water over a larger area, resulting in
excellent cleaning action with a reduced risk
of surface damage, Large surface areas
can be cleaned more quickly using a wide
fan pattern.
NOZZLE CLEANING INSTRUCTIONS
A clogged or partially clogged nozzle can
cause a significant reduction of water
coming out of the nozzle and cause the unit
to pulsate while spraying. To clean out the
nozzle:
• Turn off and unplug unit.
• Turn off water supply. Relieve any
pressure trapped in the hose by squeezing
trigger 2-3 times.
• Separate lance from gun.
• Rotate nozzle to the narrow stream setting. This
opens up the fan blades.
• Using included tip cleaner, or an unfolded
paper clip, insert wire into the nozzle hole
and move back and forth until debris is
dislodged. (See Figure 5.)
• Remove additional debris by
back-flushing water through the nozzle. To
do this, place end of a garden hose ( with
water running ) to end of nozzle for 30-60
seconds.
ANGLE TO THE CLEANING
SURFACE
When spraying water against a surface,
maximum impact is generated when the
water strikes the surface “head on.”
However, this type of impact tends to cause
dirt particles to imbed in the surface,
thereby preventing the desired cleaning
action.
The optimum angle for spraying water
against a cleaning surface if 45 degrees.
Spraying water against a surface at this
angle provides for the most beneficial
impact force combined with efficient
removal of debris from the surface.
DISTANCE FROM CLEANLING
SURFACE
Another factor that determines the impact
force of the water is the distance from the
spray nozzle to the cleaning surface. The
impact force of the water is increased as the
nozzle is moved closer to the surface.
HOW TO AVOID DAMAGING SURFACES
Damage to cleaning surfaces occurs
because the impact force of the water
exceeds the durability of the surface. The
impact force can be varied by controlling
the three previously noted items. Never use a
narrow high impact stream on a surface that is
susceptible to damage. Avoid spraying
windows with a narrow high impact stream
as this may cause breakage.
The surest way to avoid damaging surfaces is to
follow these steps:
1. Before triggering the gun, adjust the
nozzle to a wide fan pattern.
2
．
Place the nozzle approximately 4-5 feet
from and 45 degrees to the cleaning
surface, and trigger the gun.
3. Vary the fan pattern spray angle and the
distance to the cleaning surface until
optimum cleaning efficiency is achieved
without damaging the surface.
Nozzle
Figure 2 - Adjusting nozzle for fan pattern
( not applicable on some nozzle)
Nozzle
Tip Cleaner
Figure 5- Insert tip cleaner in nozzle hole
and move back and forth until debris is dis-
lodged
Figure 3 -Narrow high impact stream
Figure 4 - Wide fan pattern.
Figure 6-Optimum Angle to Cleaning
Surface
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