Working With Detergents - Kärcher K 390 M plus Operator's Manual

High pressure washer
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WORKING WITH DETERGENTS

Kärcher Pressure washers operate at two pressures. The high pressure is used for cleaning,
you cannot apply detergents when working at high pressure. To apply detergents you must
be operating at low pressure.
Step 1 Install the High/Low pressure nozzle.
Set the nozzle to the low pressure setting by
turning the nozzle collar. The nozzle must be
set in the low pressure position to apply
detergents.
Step 2 Place the filter end of detergent
suction tube into the jug.
Caution
Never use:
• Bleach, Chlorine products and other
corrosive chemicals
• Liquids containing solvents
(i.e., paint thinners, gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the unit and
will damage the surface being cleaned.
Step 3 Turn on the pressure washer.
Pull trigger to operate unit: Liquid detergent
is drawn into the unit and mixed with water.
Apply detergent to work area. Do not allow
detergent to dry on surface.
Always Use Karcher Detergents
for Best Results.
Karcher biodegradable detergents are
specially formulated to protect the
enviroment and your pressure washer. The
special formula won´t clog the suction tube
filter and will protect the internal parts of
the pressure washer for a longer life. For
Karcher Detergents, check your retailer or
call:
1-800-465-4980
The following Karcher detergents are
available:
Vehicle Wash
Degreaser
Multipurpose Cleaner
For best results see Cleaning
Tips on pages 9 & 10 for specific
information on how to clean
different surfaces.
7

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