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 be rotated to have a 0o narrow high impact stream to a 60o wide fan spray (See Figure 11).
Nozzle 
Quick connect tip
Pull back collar
Quick connect tip
Figure 12 - Installing Quick Connect Tip
Green – 25o – General Duty
White – 40o – Light Duty
Black – 65o – Low Pressure
Detergent
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 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.
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 degrees.
Spray water against a surface at a 45 degree angle to achieve the most beneficial 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 factor 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
Figure 11 - Adjusting nozzle for fan pattern
If equipped with the quick connect tips, the tips can be switched out from a 0o narrow high impact stream to a 65o wide fan spray.
The color of the tip shows what spray angle it is:
Red – 0o – Maximum Duty
Yellow – 15o – Heavy Duty
Figure 13 - Narrow high impact stream
Figure 14 - Wide fan pattern
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 surface 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 follow these steps:
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