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Operation (Continued)
If there is not a plastic adjustment knob
located on the pump (See Figure 10),
then the pressure cannot be adjusted.
The only way to adjust the pressure is
to move closer or further away from the
cleaning surface and adjust the spray
fan angle as shown in the next section.
Counterclockwise:
Lower pressure
Clockwise:
Higher pressure
Figure 10 - Camshaft pump pressure
adjustment
ADJUSTING THE SPRAY FAN ANGLE
Your unit is either equipped with a
adjustable fan nozzle or quick connect
tips that have a range of spray fan
angles.
If equipped with the adjustable fan
nozzle, the spray end of the lance can
o
be rotated to have a 0
narrow high
o
impact stream to a 60
wide fan spray
(See Figure 11).
Nozzle
Figure 11 - Adjusting nozzle for fan
pattern
If equipped with the quick connect tips,
the tips can be switched out from a 0
narrow high impact stream to a 65
wide fan spray.
The color of the tip shows what spray
angle it is:
o
Red – 0
– Maximum Duty
o
Yellow – 15
– Heavy Duty
Quick connect tip
Pull back collar
Quick connect tip
Figure 12 - Installing Quick Connect Tip
o
Green – 25
– General Duty
o
White – 40
– Light Duty
o
Black – 65
– Low Pressure
Detergent
A narrow stream has high impact force
on the cleaning surface and results in
maximum deep cleaning in a concen-
trated area. However, this narrow high
impact spray can damage some sur-
faces, so use it cautiously.
A wide fan pattern will distribute the
impact of the water over a larger area
resulting in excellent cleaning action
with reduced risk of surface damage.
Clean large surface areas quickly using
a wide fan pattern.
Figure 13 - Narrow high impact stream
o
o
Figure 14 - Wide fan pattern
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 parti-
cles to embed in the surface and can
prevent the desired cleaning action.
The optimum angle for spraying water
against a cleaning surface is 45 degrees.
Spray water against a surface at a 45
degree angle to achieve the most benefi-
cial impact force and to efficiently
remove debris.
Figure 15 - Optimum angle to cleaning
surface
DISTANCE FROM CLEANING SURFACE
The distance between the spray nozzle
and the cleaning surface is another fac-
tor that affects the impact force of the
water. The impact force of the water
increases 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. You
can vary the impact force by controlling
the nozzle's fan pattern, the nozzle's
angle to the cleaning surface, and the
nozzle's distance from the cleaning sur-
face. Never use a narrow high impact
stream or a Turbo/rotary nozzle on a sur-
face that is susceptible to damage. Avoid
spraying windows with a narrow high
impact stream or turbo nozzle. Doing so
may break the window. The most sure
way to avoid damaging surfaces is to fol-
low these steps:
7
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