Karcher K 240 User Manual
Model K 240 plus Part No. 1.223–585.0
High Pressure Washer Operator Manual
Overview ........................................................................ 2
Precautions ................................................................. 2-4
Assembly Instructions.................................................... 4
Operating Instructions ................................................... 5
GFCI Instructions ........................................................... 6
Using the Accessories ................................................... 6
Working with Detergents ................................................ 7
Shut Down and Clean-Up .............................................. 8
Taking a Break................................................................ 8
Winterizing and Long-Term Storage .............................. 8
Cleaning Tips ............................................................ 9-10
Optional Cleaning Accessories .................................... 10
Troubleshooting ...................................................... 11-12
Specifications
Operating pressure 1400 PSI
Water volume 1.3 GPM
Voltage 120 V
Amp draw 14 AMPS
In USA Call:
1-800-537-4129
or visit our website:
www.karcher-usa.com
Model K 240 plus OVERVIEW
Item Description
1. On/Off switch
2. High pressure outlet
3. Water inlet with internal water filter
4. Dirtblaster wand
5. High/Low spray wand
6. Spray wand extension
7. Trigger gun
8. Trigger gun safety lock
9. High pressure hose
10. Power cord
11. Ground fault Circuit Interrupter (GFCI)
12. Detergent Tank (removable)
2
NEVER!
Never point nozzle at people or animals.
Never drink alcohol or use drugs while operating this equipment.
Never operate while standing in water.
Never touch plug with wet hands.
Never let electrical connections rest in water.
Never operate pressure washer without the water turned on
Never use hot water
IMPORTANT PRECAUTIONS – Read First!
IMPORT ANT SAFETY INSTRUCTIONS
WARNING – When using this product basic
precautions should always be followed,
including the following:
• Read all the instructions before using the
product.
• To reduce the risk of injury, close supervision
is necessary when a product is used near
children.
• Know how to stop the pressure washer and
bleed pressures quickly. Be thoroughly
familiar with the controls.
• Stay alert — watch what you are doing.
• Do not operate the product when fatigued or
under the influence of alcohol or drugs.
• Keep operating area clear of all persons.
• Do not overreach or stand on unstable
support. Keep good footing and balance at
all times.
• Follow the maintenance instructions specified in the manual.
• This Pressure Washer Is Provided With A
Ground Fault Circuit Interrupter Built Into The
Power Cord Plug. If Replacement Of The Plug
Or Cord Is Needed, Use Only Identical
Replacement Parts.
WARNING – Risk of Injection or Injury –
Do Not Direct Discharge Stream At Persons.
• High pressure jets can be dangerous if
subject to misuse. The jet must not be
directed at persons, animals, electrical
devices, or the machine itself.
• Wear safety goggles.
• Do not use acids, solvents, or any other
flammable material in this product. These
products can cause physical injuries to the
operator and irreversible damage to the
machine.
• This machine has been designed for use with
cleaning detergent supplied or recommended by the manufacturer. The use of other
cleaning detergents may affect the operation
of the machine and void the warranty.
• The Gun Safety Lock prevents the trigger from
accidentally being engaged. This safety
feature does not lock trigger in the on
position.
- SAVE THESE INSTRUCTIONS -
GROUND FAULT CIRCUIT
INTERRUPTER PROTECTION
This pressure washer is provided with a
ground-fault circuit-interrupter (GFCI) built into
the plug of the power-supply cord. This device
provides additional protection from the risk of
electric shock. Should replacement of the plug
or cord become necessary, use only identical
replacement parts that include GFCI
protection.
SERVICING OF A
DOUBLE-INSULATED APPLIANCE
In a double-insulated product, two systems of
insulation are provided instead of grounding.
No grounding means is provided on a doubleinsulated product, nor should a means for
grounding be added to the product. Servicing
a double-insulated product requires extreme
care and knowledge of the system, and should
be done only by qualified service personnel.
Replacement parts for a double-insulated
product must be identical to the parts they
replace.
A double-insulated product is marked with the
words “DOUBLE-INSULATION” or “DOUBLEINSULATED”. The symbol may also be marked
on the product.
EXTENSION CORDS
Use a sufficient gauge:Up to 25 ft = 12/2 AWG
25 to 50 ft =10/2 AWG
Use only extension cords that are intended for
outdoor use. These extension cords are
identified by a marking “Acceptable for use with
outdoor appliances; store indoors while not in
use.” Use only extension cords having an
electrical rating not less than the rating of the
product. Do not use damaged extension cords.
Examine extension cord before using and
replace if damaged. Do not abuse extension
cord and do not yank on any cord to disconnect.
Keep cord away from heat and sharp edges.
Always disconnect the extension cord from the
receptacle before disconnecting the product
from the extension cord. If you are using an
extension cord, it should always be completely
unwound from the cable drum.
WARNING – To reduce the risk of electrocution,
keep all connections dry and off the ground.
Do not touch plug with wet hands.
3
IMPORTANT PRECAUTIONS – continued
Water Supply
(Cold Water Only)
• Water hose must be at least 3/4 inch in
diameter.
• Flow rate of water supply must not fall
below 2.5 GPM (gallons per minute).
• Flow rate can be determined by running the
water for one minute into an empty“ 5gallon container.
• The water supply temperature must not
• Never use the pressure washer to draw in
• Always prevent debris from being drawn
ASSEMBLY INSTRUCTIONS
4
exceed 104°F/40°C.
water contaminated with solvents, e.g.
paint thinners, gasoline, oil, etc.
into the unit by using a clean water source.
Step 1
Open the detergent tank.
Step 4
Pull out the locking slide from
the right side of the trigger gun
handle, and insert the small end
of the high pressure hose into
place. Push the locking slide
back into the trigger gun to lock
the hose in position.
Step 2
Connect the detergent suction
tube to the pressure washer
Step 3 Place the filter end of
detergent suction tube into the
container.Assemble the
detergent tank.
Step 5
Insert the Spray Wand
Extension into the trigger gun.
Press in against the spring
tension and twist into the lock
position. Turn the Spray Wand
Extension Collar clockwise
until tight.
OPERATING INSTRUCTIONS
Step 1
Connect the high pressure hose to the unit’s high
pressure outlet.
Step 2 Insert the spray wand of your
choice into the wand extension. Push in
and turn clockwise to lock spray wand
in place.
5
Step 3
Connect garden hose to unit’s water inlet.
Step 5
Plug the power cord into the power outlet. Unlock
the lock of the trigger gun. Press “TEST”, then
press “RESET” to assure proper connection to
power. Trigger the gun to eliminate trapped air,
wait for a steady flow of water to emerge from the
spray nozzle.
Step 4
Connect garden hose to the cold water
source and turn water on completely.
Step 6
Turn on the pressure washer (ON).
The motor starts only if the trigger
of the gun is pulled and shuts off
when the trigger is released.
GFCI INSTRUCTIONS
Step 1 Plug the Ground Fault Circuit
Interrupter (GFCI) into a working
outlet
USING THE ACCESSORIES
The High/low spray wand allows you to adjust
the cleaning pressure. To clean at maximum
6
pressure, the High/low wand must be
positioned to the high pressure setting (+).
To apply detergent, the wand must be
positioned to the low pressure setting (-).
Note:
The actual
appearance
of the GFCI
may be
different
from this
illustration.
Step 2 Press “TEST”, then press
“RESET” to assure proper
connection to power.
Dirtblaster® spray wandHigh/low spray wand
This wand features a 0º pencil jet which
rotates 360º for maximum dirt cutting action,
effectively increasing cleaning performance up
to 50%. This wand combines the cleaning
performance of a 0º pencil jet with the surface
coverage of a wide angle nozzle. Not
recommended for soft materials, siding,
painted surfaces, decks or autos.
For higher pressure turn wand
tip to the plus (+) position.
For lower pressure turn wand
tip to the minus (-) position.
Warning
TO AVOID SERIOUS INJURY, NEVER POINT SPRAY NOZZLE
AT YOURSELF, OTHER PERSONS OR ANIMALS
WORKING WITH DETERGENTS
Karcher Pressure washers operate at two pressures. The high pressure setting is used for
cleaning, you cannot apply detergents when working at high pressure. To apply detergents you
must be operating at low pressure.
For best results see Cleaning
Tips on pages 8 & 9 for specific
information on how to clean
different surfaces.
Step 1 To apply detergents Install the
Wash brush or the high/low spray wand.
Push in and turn clockwise
to lock into position.
Then set wand tip
to the low pressure
setting (-).
Always Use Karcher
Detergents for Best Results.
Karcher biodegradable detergents
are“specially formulated to protect the
environment and your pressure washer.
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:
In USA Call:
1-800-537-4129
or visit our website:
www.karcher-usa.com
7
Step 2 Fill a detergen tank with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
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.
The following Karcher detergents are
available:
• Vehicle Wash • House Wash
• Degreaser • Deck Wash
• All Purpose Cleaner
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.
SHUTTING DOWN & CLEAN-UP
Step 1
Remove detergent
suction tube from
container and insert into
1 gallon of fresh water.
Siphon water at low
pressure for one minute.
8
Step 5
Disconnect the garden hose
from the water inlet on the unit.
Step 2
Turn the switch to
“OFF” position and
unplug cord from
outlet.
Step 6
Disconnect the high pressure hose from the high pressure
outlet and engage the gun safety lock.
TAKING A BREAK... five minutes or more
Step 1
Engage gun
safety lock.
Step 3
Turn off the water
source.
Step 4
Press trigger to
release water
pressure.
Step 2
Turn pressure
washer to “OFF”
position.
WINTERIZING AND LONG-TERM STORAGE
1.Disconnect all water connections.
2. Turn on the machine for a few seconds,
until the water which had remained in
the pump exits. Turn off immediately.
3.Do not allow high pressure hose to
become kinked.
4. Store the machine and accessories in
a room which does not reach freezing
temperatures.
Caution: Failure to follow the above
directions will result in damage to the
pump assembly and accessories.
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