Maxus PW2515 - Manual (Page 8)

Pressure Washer
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 spray tip 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 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 (1,22-1,52 m)
away from the cleaning surface. Then hold the lance and
spray tip at a 45 degree angle to the cleaning surface.
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.
NOTE: Use only detergents formulated for pressure washers.Test
detergent in an inconspicuous area before use.
DETERGENTS
The use of detergents can dramatically reduce cleaning time
and assist in the removal of difficult stains. Many detergents
are customized for pressure washer use on specific cleaning
tasks. Pressure washer detergents are as thick as water.
Using thicker detergents – like dish soap – will clog the
chemical injection system and prevent the application of the
detergent.
Once applied to a cleaning surface, detergents take time to
break down dirt and grime. Detergents work best when applied
at low pressure.
You can effectively clean surfaces by combining the chemical
action of detergents with high pressure rinses. On vertical
surfaces, apply the detergent starting at the bottom and work
your way upward. This method prevents the detergent from
sliding down and causing streaks. Begin high pressure rinsing at
the bottom and work your way upward. On particularly tough
stains, use a brush in combination with detergents and high
pressure rinsing.
1. Follow manufacturer’s label directions for mixing correct
concentrations of soap/detergents. The soap detergent to
water ratio through the pump is approximately 12% (1 to
8).
2. Pour detergent into the detergent tank. The tank capacity is
1.5 gallons.
3. Install 65º (Black) Low Pressure Detergent Tip in the quick
connect fitting on the end of the lance.
NEVER replace quick connect tip
when gun is triggered. Always
engage trigger lock on gun before removing or installing quick
connect tips.
GENERAL CLEANING TIPS
1. Apply the detergent so that it thoroughly covers the
cleaning surface. Apply the detergent from bottom to top
to prevent the detergent from sliding down and streaking.
Wait a couple of minutes for the detergent to break down
the dirt and grime. Use a brush to lightly scrub heavily
soiled areas. Never allow the detergent to dry on the
cleaning surface.
2. Replace black 65º quick connect tip with the yellow 15º tip
and complete final rinse.
NEVER replace quick connect tip
when gun is triggered. Always
engage trigger lock on gun before removing or installing quick
connect tips.
3. NOTE: After using detergents, flush the suction system by
rinsing out tank with clean water and running unit with
black 65º tip flushing clean water from tank through the
pump.
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Operation (Continued)
4. Detergent Application
The color of the tip shows what spray angle it is:
Red – 0° – Maximum Duty*
Yellow – 15° – Heavy Duty
Green – 25° – General Duty*
White – 40° – Light Duty*
Black – 65° – Low Pressure Detergent
* = Not Included
Figure 12 - Optimum angle to cleaning
surface