11
OPERATION
ADJUSTING THE SPRAY PATTERN
Pencil or fan water spray patterns can be obtained
by rotating the end of the adjustable fan nozzle
clockwise or anti-clockwise, Fig 13. The fan spray
pattern is the most commonly used for general
cleaning operations. The pencil spray pattern is
used to remove localized stubborn contamination
such as oil stains.
Note: before using the pressure washer to clean
patio paving slabs it is advisable to test a small
area first, some paving slabs are manufactured
from inferior materials and the use of a pressure
washer could damage the surface.
HELPFUL HINTS
Before starting cleaning remove any objects which
could cause a hazard. Ensure that all doors and
windows are closed (where appropriate).
The adjustable lance allows you to use a variety of
spray patterns from a fan to a pencil jet. When
using the pressure washer to clean decking, patios,
vehicles, etc., always start by using the fan spray
and begin spraying from a minimum 30cm away to
avoid damaging the surface of the material to be
cleaned. The pressure of the spray on the surface
you are cleaning increases as you move the nozzle
closer to the surface. We recommend that for most
cleaning applications a 45° spray angle should be
used to avoid damaging the surface being cleaned.
Spraying directly “head-on” tends to cause dirt par-
ticles to embed in the surface.
WARNING.
Do not adjust the nozzle
while the trigger is squeezed.
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 or totally stop
while spraying, To clean out the nozzle:
•
Turn off and unplug the unit.
•
Turn off the water supply and relieve any
pressure within the unit by squeezing the
trigger 2-3 times.
•
Separate the lance from the gun.
•
Rotate the nozzle to the narrow stream
setting. This opens up the fan blades.
•
Using the cleaning needle or an unfolded
paper clip, insert the needle into the nozzle
hole and move it back and forth until the
debris is dislodged, Fig 14.
•
Remove additional debris by back-flushing
water through the nozzle. To do this, place the
end of a garden hose (with water running) to
the end of the nozzle for 30-60 seconds.
DETERGENTS
The use of detergents can dramatically reduce
cleaning time and assist in the removal of difficult
stains. Some detergents have been customized for
pressure washer for specific cleaning tasks. These
detergents are approximately as thick as water.
The cleaning power of detergents comes from
applying them to a surface and giving the
chemicals time to break down the dirt and grime.
Detergents work best when applied at low
pressure. Follow this with a high pressure rinse for
best cleaning results. On vertical surfaces, apply
the detergent starting at the bottom and work your
way upward. This will prevent the detergent form
sliding down and causing streaks. High pressure
rinsing should also progress from the bottom
upwards. On particularly tough stains it may be
necessary to use a brush in combination with
detergents and high pressure rinsing.
Fig. 13
Fig. 14
Summary of Contents for AJP-1280
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