PW2770, PW3270, and PW4070
Operation (Continued)
7.Start the engine: Unlock the trigger safety latch on the gun. 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 has built up in the high pressure hose. Repeat Steps 7 and 8 until the engine starts.
3. 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.
After the engine starts, 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.
Counterclockwise:
Lower pressure
Clockwise:
Higher pressure
Figure 11 - Camshaft pump pressure adjustment
PRESSURE ADJUSTMENT
Please refer to your CAT pump manual for specific pressure adjustment details.
ADJUSTING THE SPRAY FAN ANGLE
Five quick connect tips are included with this pressure washer. The tips have a range of spray fan angles, ranging from 0°, narrow high impact, to a 65° 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.
Figure 12 - Narrow high impact stream
Figure 13 - 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.
DISTANCE FROM CLEANING SURFACE
The distance between the spray tip and the cleaning surface is another factor that affects the impact force of the water. The impact force of the water increases as the tip is moved closer to the surface.
Figure 14 - Optimum angle to cleaning 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 spray tip angle to the cleaning surface and the distance from the cleaning surface and by changing the spray tip. NEVER use a narrow high impact stream on a surface that is susceptible to damage. Avoid spraying windows with a narrow high impact stream. Doing so may break the window. The most sure way to avoid damaging surfaces is to follow these steps:
1.Before triggering the gun, make sure the quick connect tip you are using is appropriate for the application.
2.Place the spray tip approximately 4- 5 feet
3.Vary the fan pattern spray angle and the distance to the cleaning surface until optimum cleaning efficiency is achieved without damaging the surface.
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