Karcher K 3.78 User Manual

K 3.78 M

High Pressure Washer Operator Manual

Overview .......................................... 2

Important Precautions ................ 3 - 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, max. ... 1600 PSI

Water volume ....................... 1.6 GPM

Voltage ...................................... 120 V

Amp draw ............................ 14 AMPS

Part No. 1.423-953.0

In USA call:

1-800-537-4129

or visit our website:

www.karcher-usa.com

Manual Part No. 5.961-216.0 12/03

OVERVIEW

10 8

Item DescriptionItem Description

Item Description

Item DescriptionItem Description

1. Power cord with Ground Fault Circuit Interrupter (GFCI)

2. Trigger gun

3. Trigger gun safety lock

4. High pressure hose

5. Water inlet with filter (not

shown)

6. Transport handle

7. Power cord holder

8. Detergent suction tube with

filter

9. High pressure outlet

10. On/Off switch

11. Vario Power spray wand

12. Rotary spray wand

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!

Safety Warnings

When using this product, basic precautions should always be followed:

• Read all the instructions before using the product.

• 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.

• To reduce the risk of injury, do not operate the machine near children.

• Learn how to stop the machine and release pressure quickly. Be thoroughly familiar with the controls.

• Stay alert — watch what you are doing.

• Wear safety goggles.

• Do not use acids, solvents, or any flammable material in this product. These products can cause physical injuries to the operator and irreversible damage to the machine.

• Do not operate the product when fatigued or under the influence of alcohol or drugs.

• Keep operating area clear of all persons.

• Do not stand on unstable surfaces. Stand with both feet balanced at all times.

• To reduce the risk of electrocution, keep all connections dry and off the ground. Do not touch plug with wet hands.

• The Trigger Gun Safety Lock PREVENTS the trigger from accidentally being engaged. This safety feature DOES NOT lock trigger in the on position.

Extension Cords

Use a sufficient gauge: Up to 25 ft. = 12/3 AWG; 25 to 50 ft. = 10/3 A WG. Use only extension cords that are intended for outdoor use. These extension cords are identified by the 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.

Ground Fault Circuit Interrupter (GFCI) Protection

This product is supplied with a Ground Fault Circuit Interrupter (GFCI) built into the power cord plug. This device provides additional protection from the risk of electric shock. If power is interrupted in the line, the GFCI will automatically re-close the circuit to the load after power is restored. Depending on the GFCI model, it may be necessary to manually operate the reset button to restore power to the GFCI load circuit. If replacement of the plug or cord is needed use identical replacement parts.

Grounding Instructions

This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances. DANGER- Improper connection of the equipment-grounding conductor can result in a risk of electrocution. Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet is properly grounded. Do not modify the plug provided with the product - if it will not fit the outlet, have a proper outlet installed by a qualified electrician. Do not use any type of adapter with this produc

Caution

• Follow the maintenance instructions specified in the manual.

• 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.

IMPORTANT PRECAUTIONS – continued PRECAUTIONS

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“ 5-gallon container.

• The water supply temperature must not exceed 104°F/40°C.

• Never use the pressure washer to draw in water contaminated with solvents, e.g. paint thinner, gasoline, oil, etc.

• Always prevent debris from being drawn into the unit by using a clean water source.

Save these instructions!

ASSEMBLY INSTRUCTIONS

Step 1

Step 2

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.

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