OC 4

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1.599-350.0

Read this safety chapter and these original instructions before using the device for the first time. Act in accordance with them. Keep the original instructions for future reference or for future owners.

In addition to the notes in the operating instructions, you also need to take into consideration the general safety regulations and accident prevention guidelines applicable by law.
Warnings and information notices attached to the device provide important information for hazard-free operation.

DANGER

Indication of an imminent threat of danger that will lead to severe injuries or even death.

WARNING

Indication of a potentially dangerous situation that may lead to severe injuries or even death.

CAUTION

Indication of a potentially dangerous situation that may lead to minor injuries.

ATTENTION

Indication of a potentially dangerous situation that may lead to damage to property.

DANGER

Never touch the mains plug and socket with wet hands.

DANGER

Danger of explosion. Do not charge any non-rechargeable battery.

DANGER

Do not charge the battery pack in an explosion-hazard environment.

DANGER

Never insert conductive objects, e.g. screwdrivers or similar, into the charging socket on the appliance.

WARNING

Only charge the appliance using the original charger enclosed or with a charger approved by KÄRCHER.

WARNING

Protect the power cable from heat, sharp edges, oil and moving parts.

WARNING

Do not open the charger. Repairs are only to be carried out by qualified personnel.

WARNING

Only use the charger for charging approved battery packs.

WARNING

Immediately replace a damaged charger together with charging cable with an original part.

WARNING

The appliance contains electrical components - do not clean the appliance under running water.

WARNING

You may not charge the battery pack for longer than 24 hours without interruption.

CAUTION

Do not use the battery pack when dirty or wet.

CAUTION

Keep the charger ventilation slits free of obstructions.

CAUTION

Do not pull the mains plug out the socket using the power supply cable.

CAUTION

Do not carry/transport the device using the power supply cable.

ATTENTION

Short circuit hazard. Protect the contacts of the battery pack from metal parts.

ATTENTION

Only use and store the charger in dry rooms.

DANGER

Never insert conductive objects, e.g. screwdrivers or similar, into the charging socket on the appliance.

DANGER

Do not expose the battery to strong sunlight, heat or fire.

ATTENTION

This device contains non-replaceable batteries.

Does not apply to appliances with a replaceable battery pack

WARNING

The device is not intended for use by children, persons with restricted physical, sensory or mental abilities or persons unfamiliar with these instructions.

WARNING

Persons with reduced physical, sensory or mental capabilities and persons lacking experience and knowledge may only use the appliance if they are properly supervised, have been instructed on use of the appliance safely by a person responsible for their safety, and understand the resultant hazards involved.

WARNING

Children must not play with the appliance.

WARNING

Children must be supervised to prevent them from playing with the appliance.

WARNING

Only use the device for its proper use. Take into account the local conditions and beware of third parties, in particular children, when working with the device.

WARNING

Adhere to the respective safety regulations in hazard zones (e.g. service stations). Never operate the device in explosive spaces.

WARNING

Do not spray any objects which contain harmful substances (e.g. asbestos).

WARNING

Risk of injury. Do not direct the spray jet onto the eyes.

CAUTION

Do not use the appliance if it has been dropped beforehand, is visibly damaged or if it is leaking.

CAUTION

Only operate or store the device in accordance with the description or figure.

CAUTION

Never leave the device unsupervised while it is in operation.

CAUTION

In order to guarantee stability, place the device on a firm, flat surface.

CAUTION

Accidents or damage due to the device falling over. Before all actions with or on the device, you must make sure that it is stable.

ATTENTION

Do not fill with any cleaning agents or other supplements.

ATTENTION

Device damage. Never fill the water reservoir with solvents, liquids containing solvents or undiluted acids (e.g. detergents, petrol, paint thinners and acetone).

ATTENTION

Device damage due to dry running. Only switch on the device when water is present in the water reservoir.

ATTENTION

Do not operate the device at temperatures below 0 °C.

Use the low pressure cleaner in private households only.

The low pressure cleaner is intended for cleaning machines, vehicles, tools, façades, terraces, garden machines, pets etc. using a low-pressure water stream without additional detergents.

The packing materials can be recycled. Please dispose of packaging in accordance with the environmental regulations.

Electrical and electronic devices contain valuable, recyclable materials and often components such as batteries, rechargeable batteries or oil, which - if handled or disposed of incorrectly - can pose a potential danger to human health and the environment. However, these components are required for the correct operation of the device. Devices marked by this symbol are not allowed to be disposed of together with the household rubbish.

Cleaning work producing in oily waste water, e.g. washing engines, washing undercarriages etc., may only be performed at washing stations with an oil separator.

Working with detergents may only be performed on watertight surfaces with connection to the waste water sewage system. Do not allow detergent to enter waterways or the soil.

Extraction of water from public waterways is not permitted in some countries.

Notes on the content materials (REACH)

Current information on content materials can be found at: www.kaercher.de/REACH

Only use original accessories and original spare parts. They ensure that the appliance will run fault-free and safely.

Information on accessories and spare parts can be found at www.kaercher.com.

The scope of delivery for the appliance is shown on the packaging. Check the contents for completeness when unpacking. If any accessories are missing or in the event of any shipping damage, please notify your dealer.

CAUTION

Risk of injury and damage due to missing or modified safety devices!

Injuries and material damage

Safety devices must not be bypass, removed or rendered ineffective. Safety devices are provided for your own protection.

The ON/OFF button prevents unintentional operation of the device.

If the trigger of the low pressure gun is operated, the pressure switch turns on the pump and the low pressure stream is released.

If the trigger is operated again and released, the pressure switch turns off the pump and the low pressure stream is stopped.

The motor circuit breaker shuts off the device if power consumption it too high.

Cap (4 pieces)
Carrying handle on the cover
Filler plug
Cover
Water reservoir
Valve opener
Fine filter (device)
* Bayonet sleeve
* Suction hose
* Suction hose hub
* Suction strainer
* Fine filter (suction hose)
Charger
Charging cable
USB-C plug
USB-A plug
Bar cover
Charging socket
LED
ON/OFF button
Type plate
Device
Carrying handle on the device
Low pressure hose
Nozzle
Low pressure gun
Trigger

* Optionally available

LED colour green		The battery is charging (LED pulsates).
LED colour green		The device is switched on, charge state ≥ 50 % (LED lights up).
LED colour orange		The device is switched on, charge state 20% -50% (LED lights up).
		Warning of low remaining running time of approx. 4 min. (LED pulsates).
		The battery is fully discharged (LED flashes slowly for 5 seconds).
		Malfunction (LED flashes quickly for 20 seconds), see Troubleshooting guide.

ATTENTION
Risk of damage and leaks when parking in wet conditions, dirt and on loose surfaces!
Damage and leaks on the device and water reservoir.
Do not place the device in wet conditions (e.g. puddles, damp lawns) and do not place the water reservoir on a dirty, loose surface (e.g. sand, mud).
Place the device on a level, horizontal surface.

Remove the cover:
1. Disengage both top caps and unhook them from the cover.
2. Remove the cover.
Remove the charger and the charging cable from the water reservoir.
Remove the device from the water reservoir:
1. Fold up the carrying handle on the device.
2. Lift the device out of the water reservoir:
Inserting the device in the water reservoir is performed in the reverse sequence.

Charging the battery:
1. Release the cover of the charging socket from the device and swing it downwards.
2. Plug the USB-C plug of the charging cable into the charging socket.
3. Plug the USB-A plug of the charging cable into the charger.
4. Plug the charger into a mains socket.
Note
The LED pulsates green during the charging process. It lights up for 10 min. green when the battery is fully charged.
For the charging time, see Technical data.

After charging

Pull the charger out of the mains socket.
Note
Avoid unnecessary energy consumption and unplug the charger once the battery is fully charged.
Pull the USB-C plug out of the charging socket.
Swivel the cover of the charging socket upwards and press it firmly on the device.

ATTENTION

Risk of damage due to improper water supply

Damage to the device and accessories.

Only fill the water reservoir with clean, clear water and only allow the device to draw in clean, clear water.Do not fill the water reservoir with detergents, pesticides, or other additives and do not vacuum such substances with the device.Do not immerse the device in liquids.Do not use the water reservoir to draw liquids while it is attached to the device.Remove the water reservoir from the device before filling it with water.

Fill the water reservoir:
1. Attach the cover to the water reservoir.
2. Engage both top caps on the cover and hook them in.
3. Remove the filler plug from the cover and lift it up.
4. Fill the water reservoir with clean, cold clear water.
Fold down the filler plug and press down.
Place the low-pressure gun next to the device.
Attach the water reservoir to the device:
1. Place the low-pressure hose into the recess on the device to avoid pinching it.
2. Place the water reservoir on the device and engage both lower caps.
Remove the water reservoir from the device to refill it with water.

ATTENTION
Device with water reservoir without function if valve opener is not installed!
The device does not pump water.
Keep the valve opener and the fine filter in a safe place to avoid losing them.Insert the fine filter and the valve opener into the device before operating it with the water reservoir. Make sure that the pins on the fine filter and valve opener point upwards.
Lever out the valve opener using the suction hose hub or remove it from the device using pliers.
Installation information
The pin on the valve opener must point upwards.
Align the notch on the valve opener with the guide pin on the device.
Remove the fine filter (device) from the device using the suction hose hub or pliers.
Store the valve opener and the fine filter safely, e.g.in the water reservoir.
Install the suction hose:
1. Insert the suction hose hub into the device.
2. Turn the suction hose hub slightly to fix it in place.
3. Hang the suction strainer in a water source (e.g. water bucket, can).
Note
At the end of operation, remove the suction hose in reverse order and install the fine filter and the valve opener.

Place the device on a level, horizontal surface.

ATTENTION

Risk of damage if dry running!

Dry running damages the pump of the device.

Do not switch on the device if no water is present in the water reservoir or the suction strainer is not fully submerged in water.Switch off the device as soon as the water reservoir or the external water source is empty.Switch off the device if it does not build up pressure within 2 minutes. Then proceed according to the instructions in Troubleshooting guide.

Press the ON/OFF button.
The device switches on.
CAUTION
Risk of injury from spray jet!
The spray jet may cause injury to eyes and ears.
Do not aim the spray jet at the eyes or ears of people or animals.
Pull the trigger to switch on the spray jet.
The trigger engages and can be released.
Pull the trigger again and release it to switch off the spray jet.
Carry out the cleaning process:
1. Pull the trigger to switch on the spray jet.
2. Carry out the cleaning process.
3. Pull the trigger and release it to switch off the spray jet.
Note
At approx. 20 % remaining running time (see Technical data), the LED starts to pulsate orange. Charge the battery as soon as possible, see Battery charging.
For further information on the LED, see LED codes.
If the trigger is not operated for 30 minutes, the device switches off.

DANGER

Risk to life and health when handling cleaning agents!

Improper handling of detergents can lead to death and serious damage to health.

Observe the safety data sheet of the detergent manufacturer, in particular the instructions on personal protective gear.

ATTENTION

Risk of damage due to foreign substances in the water reservoir!

Foreign substances in the water reservoir will damage the device.

Do not fill the water reservoir with any detergents, pesticides or other additives.

ATTENTION

Risk of damage due to detergents acting too long and drying out!

Detergent can damage hot surfaces and damage surfaces if left to act for too long.

Do not apply detergent to hot surfaces and observe the maximum contact time.Do not allow detergent to dry on the surfaces being cleaned.

Spray the detergent sparingly on the dry surfaces and let it work for a while (do not let it dry).
ATTENTION
Risk of damage if dry running!
Dry running damages the pump of the device.
Do not switch on the device if no water is present in the water reservoir or the suction strainer is not fully submerged in water.Switch off the device as soon as the water reservoir or the external water source is empty.Switch off the device if it does not build up pressure within 2 minutes. Then proceed according to the instructions in Troubleshooting guide.
Press the ON/OFF button.
The device switches on.
CAUTION
Risk of injury from spray jet!
The spray jet may cause injury to eyes and ears.
Do not aim the spray jet at the eyes or ears of people or animals.
Pull the trigger and carry out the cleaning process.
Note
Approx. 2 min before the end of the operating time (see Technical data), the operating state LED starts flashing. Charge the battery as soon as possible, see Battery charging.

Actuate the trigger and release.
The spray jet stops.
After approx. 30 minutes without being pressed, the device shuts off automatically.

Press the ON/OFF button.
The device switches off.
Stop the water supply to the device:
1. Empty out the water remaining in the water reservoir.
  It can,for example, be used for other cleaning purposes or for watering.
  Or:
2. Remove the suction hose and install the fine filter and valve opener, see Suck water from open containers.
Press the ON/OFF button.
The device switches on.
Actuate the trigger and wait until no more water is emitted.
Actuate the trigger again and release.
Press the ON/OFF button.
The device switches off.
Allow the water reservoir to dry completely.
Stow the low-pressure gun and the low-pressure hose on the device.
Place the device in the water reservoir, see Removing the device from the water reservoir.
Stow the charger and the charging cable in the water reservoir.
Attach the lid to the water reservoir.

CAUTION

Risk of injury and damage

Be aware of the weight of the device during transportation.

Observe regulations for dangerous goods during transport.

Fold up the carrying handle on the cover and use it to carry the device.

CAUTION

Risk of injury and damage!

There is a risk of injury and damage due to tipping and sliding of the device during transport.

Before transporting the device in vehicles, secure it against slipping and tipping over in accordance with the applicable guidelines.

Switch off the device.
ATTENTION
Risk of damage due to escaping water!
If the device is not standing upright, water may escape from the ventilation valve and cause material damage.
Transport the device upright if water is present in the water reservoir.
Before transporting the device, stow it away or secure it against sliding, tipping and being thrown around.

CAUTION

Risk of injury and damage!

If the weight of the device is not observed, there is a risk of injury and damage.

Be aware of the weight of the device during storage.

ATTENTION

Risk of damage due to frost!

An incompletely emptied device can be damaged by frost.

Completely empty the device and accessories before storing them.Protect the device from frost.Store the device in a frost-free place and not outdoors.

Finish operation, see Ending operation.
Remove the filler plug from the cover and fold it up to prevent odour generation.
Place the device in a closed room on a level surface and store it within the permitted ambient temperature, see Technical data.

DANGER

Touching live parts

Danger of injury from electric shock

Switch off the device and unplug the charger from the device before performing any work on the device.

Clean the fine filters in the device and suction hose regularly.

ATTENTION

Risk of damage due to improper cleaning!

The fine filter is damaged by improper cleaning.

Clean the fine filter only under running water against its flow direction.Do not use sharp or hard objects such as needles or wire brushes.

Cleaning the fine filter of the device

Remove the water reservoir, see Establishing a water supply from the device's water reservoir.
Remove the valve opener and fine filter, see Suck water from open containers.
Clean the fine filter with clean, flowing water against the direction of flow.
Install the fine filter and valve opener.

Clean the fine filter of the suction hose

Remove the fine filter:
1. Turn the suction strainer approx. 45° and
2. pull it off from the bayonet sleeve.
3. Pull the fine filter off from the bayonet sleeve.
Clean the fine filter and suction strainer with clean, flowing water against the direction of flow.
The installation is performed in the reverse sequence.

Remove the battery before disposing of the device.

Switch off the device, see Ending operation.
Removing the battery:
1. Unscrew the screws anti-clockwise using a screwdriver.
2. Remove the battery compartment cover.
3. Take the battery out.
4. Disconnect the electrical socket plug connections.
Dispose of the device and the battery in accordance with the regulations via suitable collection systems, see Environmental protection.

DANGER

Touching live parts

Danger of injury from electric shock

Switch off the device and unplug the charger from the device before performing any work on the device.Have repair work and work on electrical components carried out by the authorised customer service only.

Malfunctions often have simple causes that you can remedy yourself using the following overview. When in doubt, or in the case of malfunctions not mentioned here, please contact your authorised Customer Service.

The device does not run
Device does not reach required pressure
Strong pressure fluctuations or constant switching off/on of the device
The device is leaking

Cause:

The charging state of the battery is too low.

Remedy:

Charge the battery, see Battery charging.

Cause:

The motor is overloaded, the motor circuit breaker has tripped.

Remedy:

Switch off the device.
Switch on the device and put it into operation.

Cause:

The ambient temperature is outside the permissible range, see Technical data, the motor circuit breaker has tripped.

Remedy:

Switch off the device.
Allow the device to cool down / heat up.
Switch on the device and put it into operation.
Have the device checked by Kärcher Service if this malfunction occurs repeatedly.

Cause:

Not enough water in the water reservoir.

Remedy:

Make sure that there is enough clean, clear water in the water reservoir.

Cause:

The suction hose does not suck in water.

Remedy:

Make sure that the maximum suction height is not exceeded, see Technical data.
Ensure that there is sufficient clean, clear water in the open container and that the suction strainer is fully immersed.

Cause:

The fine filter in the device or in the suction hose is dirty.

Remedy:

Clean the fine filter, see Cleaning the fine filter.

Cause:

The nozzle is clogged.

Remedy:

Clean the nozzle: Remove contamination and debris from the nozzle hole, using a needle and rinse with clean, clear water from the front.
Make sure that there is enough clean, clear water in the water reservoir.

Cause:

The device leaks a small amount for technical reasons.

Remedy:

In case of more serious leaks, have the device checked by KÄRCHER Service.

The warranty conditions issued by our relevant sales company apply in all countries. We shall remedy possible malfunctions on your appliance within the warranty period free of cost, provided that a material or manufacturing flaw is the cause. In a warranty case, please contact your dealer (with the purchase receipt) or the next authorised customer service site.

Further information can be found at: www.kaercher.com/dealersearch

Further warranty information (if available) can be found in the service area of your local Kärcher website under "Downloads".

Electrical connection/Battery
Nominal voltage of battery	10,8 V
Nominal power of device	49,5 W
Degree of protection	IPX4
Protection class	III
Charger
Charger mains voltage	100-240 V
Output voltage	5 V
Output current	2 A
Phase	1 ~
Frequency	50-60 Hz
Device performance data
Charging time for an empty battery	3,5 h
Operating duration with a fully charged battery	22 min
Operating pressure	0,7 MPa
Water reservoir capacity	8 l
Suction height (max.)	0,5 m
Permissible ambient temperature	0-40 °C
Dimensions and weights
Length	296 mm
Width	291 mm
Height of device with water reservoir	240 mm
Height of water reservoir	178 mm
Typical operating weight (CX)	10,8 kg
Determined values in acc. with EN 60335-2-79
Sound pressure level L_pA	68 dB(A)
Uncertainty K_pA	2,5 dB(A)
Sound power level L_WA + uncertainty K_WA	82 dB(A)

EU Declaration of Conformity

We hereby declare that the product named below complies with the relevant provisions of the directives and regulations listed. This declaration is invalidated by any changes made to the product that are not approved by us.

Product: Mobile Outdoor Cleaner

Type: OC 3, OC 3 Plus, OC 3 Foldable, OC 4

Directives and Regulations

2014/35/EU

2014/30/EU

2011/65/EU

2009/125/EC

2000/14/EC

2019/1782

(EU) 2023/1542

Harmonised standards used

EN 55014-1: 2017 + A11: 2020

EN 55014-2: 1997 + A1: 2001 + A2: 2008

EN 60335-1

EN 60335-2-54

EN 61000-3-2: 2014

EN 61000-3-3: 2013

EN 61558-1

EN 61558-2-16

EN 62233: 2008

EN IEC 63000: 2018

Applied conformity evaluation method

2000/14/EG: Annex V

Sound power level dB(A)

OC 3, OC 3 Plus

Measured: 81

Guaranteed: 84

OC 3 Foldable

Measured: 77

Guaranteed: 79

OC 4

Measured: 80

Guaranteed: 82

Name and address

Documentation supervisor:

S. Reiser

Alfred Kärcher SE & Co. KG

Alfred-Kärcher-Str. 28 - 40

71364 Winnenden (Germany)

Tel.: +49 7195 14-0

Fax: +49 7195 14-2212

Winnenden, 2024/09/01

The undersigned act on behalf of and with the authority of the Board of Directors.

Alfred Kärcher SE & Co. KG

Alfred-Kärcher-Str. 28 - 40

71364 Winnenden (Germany)

Ph.: +49 7195 14-0

Fax: +49 7195 14-2212

Declaration of Conformity (UK)

Product: Mobile Outdoor Cleaner

Type: OC 3, OC 3 Plus, OC 3 Foldable, OC 4

Directives and Regulations

S.I. 2016/1101 (as amended)

S.I. 2016/1091 (as amended)

S.I. 2012/3032 (as amended)

S.I. 2010/2617 (as amended)

S.I. 2001/1701 (as amended)

(EU) 2019/1782

Designated standards used

EN 55014-1: 2017 + A11: 2020

EN 55014-2: 1997 + A1: 2001 + A2: 2008

EN 60335-1

EN 60335-2-54

EN 61000-3-2: 2014

EN 61000-3-3: 2013

EN 61558-1

EN 61558-2-16

EN 62233: 2008

EN IEC 63000: 2018

Applied conformity assessment procedure

S.I. 2001/1701 (as amended): Schedule 8

Sound power level dB(A)

OC 3, OC 3 Plus

Measured: 81

Guaranteed: 84

OC 3 Foldable

Measured: 77

Guaranteed: 79

OC 4

Measured: 80

Guaranteed: 82

Name and address

Documentation supervisor:

S. Reiser

Alfred Kärcher SE & Co. KG

Alfred-Kärcher-Str. 28 - 40

71364 Winnenden (Germany)

Tel.: +49 7195 14-0

Fax: +49 7195 14-2212

Winnenden, 2024/09/01

The undersigned act on behalf of and with the authority of the Board of Directors.

Alfred Kärcher SE & Co. KG

Alfred-Kärcher-Str. 28 - 40

71364 Winnenden (Germany)

Ph.: +49 7195 14-0

Fax: +49 7195 14-2212

OC 4

97664770 (07/24)

KÄRCHER Home & Garden App

Safety instructions

Hazard levels

DANGER

WARNING

CAUTION

ATTENTION

Charger

DANGER

DANGER

DANGER

DANGER

WARNING

WARNING

WARNING

WARNING

WARNING

WARNING

WARNING

CAUTION

CAUTION

CAUTION

CAUTION

ATTENTION

ATTENTION

Battery

DANGER

DANGER

ATTENTION

Safe handling

WARNING

WARNING

WARNING

WARNING

WARNING

WARNING

WARNING

WARNING

CAUTION

CAUTION

CAUTION

CAUTION

CAUTION

ATTENTION

ATTENTION

ATTENTION

ATTENTION

Intended use

Environmental protection

Accessories and spare parts

Scope of delivery

Safety devices

CAUTION

ON/OFF button

Pressure switch

Motor circuit breaker

Device description

Description of the device

LED codes

Initial startup

ATTENTION

Removing the device from the water reservoir

Battery charging

Note

Note

Water supply

ATTENTION

Establishing a water supply from the device's water reservoir

Suck water from open containers

ATTENTION

Installation information

Note

Operation

Operation without detergent

ATTENTION

CAUTION

Note

Operation with detergent