12
Operations
Detergents & General Cleaning Techniques
WARNING: Some detergents may
be harmful if inhaled or ingested,
causing severe nausea, fainting or
poisoning. The harmful elements
may cause property damage or
severe injury.
STEP 1:
Use detergent designed
specifically for pressure washers.
Household detergents could damage
the pump. Prepare detergent
solution as required by the manufac-
turer. Fill a container with pressure
washer detergent. Place the filter
end of detergent suction tube into the
detergent container.
STEP 2:
Downstream detergent injector option:
Securely
connect the downstream detergent injector onto the
quick coupler nipple located at the discharge fitting
between the 50ft high pressure hose. Place the filter
end of detergent suction tube into the detergent
container. Turn variable pressure control wand handle
counterclockwise to lower pressure allowing detergent
to flow through the brass soap nozzle inserted at end of
wand at low pressure. Detergent is not injected into
pump and heating coil using a downstream injector it
will be mixed with water changing the concentration
and dilution levels.
(
Downstream detergent injector
does not operate at high pressure)
The option float tank with detergent valve:
Place the
filter end of detergent suction tube into the detergent
container. Open detergent valve located on the front
control panel by turning counterclockwise. Detergent
will be applied under high pressure with this option.
Detergent is drawn into machine and mixed with water
changing the concentration and dilution ratio.
STEP 3:
With the engine
running, pull trigger to operate
machine. Do not allow detergent
to dry on surface.To rinse
detergent turn variable pressure
control wand handle clockwise
for high pressure when using a
detergent injector. Turn control
panel detergent valve clockwise until closed if using the
float tank option.
IMPORTANT: You must flush the detergent
injection system after each use by placing the
suction tube into a bucket of clean water, then run
the pressure washer in low pressure for 1-2
minutes.
Thermal Pump Protection
If you run your pressure washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.
Cleaning Tips
Pre-rinse cleaning surface with fresh water. Place
detergent suction tube directly into cleaning solution
and apply to surface at low pressure (for best results,
limit your work area to sections approximately 6 feet
square and always apply detergent from bottom to top).
Allow detergent to remain on surface 1-3 minutes. Do
not allow detergent to dry on surface. If surface
appears to be drying, simply wet down surface with
fresh water. If needed, use brush to remove stubborn
dirt. Rinse at high pressure from top to bottom in an
even sweeping motion keeping the spray nozzle
approximately 1 foot from cleaning surface. Use over-
lapping strokes as you clean and rinse any surface. For
best surface cleaning action spray at a slight angle.
Recommendations:
•
Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern
and distance for maximum cleaning results.
•
If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may
remove the loose paint from the surface.
•
Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash
a small area, then check the surface for
damage. If no damage is found, continue to
pressure washing.
Detergent Injector
Landa PDHW Series Operator’s Manual 8.919-980.0 - B
WARNING
Summary of Contents for PDHW5-35624E
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