23
Operations
Applying Detergent & General
Operating 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.
AVERTISSEMENT : Certains
détergents peuvent être
dangereux s'ils sont inhalés ou
ingérés, provoquant de fortes
nausées, des évanouissements et l'empoisonne-
ment. éléments dangereux peuvent causer des
dommages à la propriété ou des blessures graves.
STEP 1:
Use detergent designed
specifically for pressure washers.
Household detergents could
damage the pump. Prepare
detergent solution as required by
the manufacturer. Fill a container
with pressure washer detergent.
Place the filter end of detergent
suction tube into the detergent
container.
STEP 2:
Open detergent valve counterclockwise until
you obtain desired mixture. Detergent will mix with the
high pressure water stream.
STEP 3:
With the motor running,
pull trigger to operate machine.
Liquid detergent is drawn into the
machine and mixed with water.
Apply detergent to work area. Do
not allow detergent to dry on
surface.
IMPORTANT: You must flush the detergent from
your pressure washer after each use by placing the
suction tube into a bucket of clean water, then run
the pressure washer for 1-2 minutes.
NOTE: If you remove detergent siphon tube from
container or allow container to empty, it will cause low
pressure by sucking air, which will damage
the pump.
Thermal pump protection
If you run the engine 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.
WARNING
Detergent
Valve
Karcher Liberty HDS Stationary Dealer’s Manual 9.801-508.0 - AY
Summary of Contents for HDS4.0/22
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