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Risk of injury due to missing or modified safety devices!
Safety devices are provided for your own protection.
Do not bypass, remove or render ineffective any safety devices.
The safety devices are set and sealed by the manufacturer. Adjustments are performed only by customer service.
The power switch prevents the device from starting up unintentionally. Turn the power switch to 0/OFF during work breaks or when finishing work.
The safety catch on the high-pressure gun prevents the device from being switched on inadvertently.
When the water quantity is reduced via the pressure/quantity control on the trigger gun, the overflow valve opens and part of the water flows back to the suction side of the pump.
When the trigger on the high-pressure gun is release, the pressure switch switches off the high-pressure pump and the highpressure jet stops.
The pump switches on again when the trigger is pulled.
If the device is not used for 30 minutes, the device switches off. The readiness time can be activated and deactivated by customer service via the service menu.
Motor circuit breaker with winding protection contact
The motor circuit breaker shuts off the device if power consumption it too high.
The winding protection contact switches the device off in the event of thermal overload.
If there are leaks in the high-pressure system, the device is switched off.
The water shortage safeguard prevents the high-pressure pump from switching on when there is a lack of water.
(option)
After switching off the device via the high-pressure gun, a solenoid valve located in the high-pressure system opens after the operating standby time has elapsed. This reduces the pressure built up in the high-pressure system.
Use at petrol stations or other hazard zones
Risk of injury
Adhere to the respective safety regulations.
Note
Do not allow waste water containing mineral oil to penetrate soil, waterways or the sewage system. Only wash the motor or the undercarriage in suitable places with an oil separator.
Water supply limit values
ATTENTION
Dirty water
Premature wear and tear or deposits in the device
Supply the device using only clean water, or recycled water that does not exceed the specified limit values.
The following limit values apply to the water supply:
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.
Detergent
Detergents make cleaning tasks easier and a selection of detergents is shown in the table. The instructions on the packaging must be observed before using the detergents.
The following types of detergent are not permitted as they will damage the device:
Area of application | Target group | Detergent | Description | Dosing |
Foaming | Food industry / cutting plants | Disinfection cleaning | RM 732 | 1-3% |
Disinfectant | RM 735 | 1,5-2% | ||
Beverage/winery businesses | Foam cleaner, alkaline | RM 58* | 1-2% | |
Foam cleaner, acidic | RM 59* | 1-2% | ||
Municipality | Foam cleaner, neutral | RM 57* | 1-2% | |
Disinfection cleaning | RM 732 | 1-3% | ||
Agriculture (only for food industry, e.g. Dairy kitchen. Not for areas close to animals) | Disinfection cleaning | RM 732 | 1-3% | |
Disinfectant | RM 735 | 1,5-2% | ||
High-pressure cleaning | Beverage/winery businesses | Active cleaner, neutral | RM 55* | 0,5-8% |
Municipality | Active cleaner, alkaline | RM 81* | 0,25-1,25% | |
Agriculture | Active cleaner, alkaline | RM 31* | 0,375-2,5% | |
Active cleaner, alkaline | RM 81* | 0,25-1,25% | ||
Natural active cleaner, alkaline | RM 82N | |||
Marine equipment | Active cleaner, alkaline | RM 81* | 0,25-1.25% | |
Car/truck workshop | Active cleaner, alkaline (motor/ parts) | RM 31* | 0,375-2,5% | |
Active cleaner, alkaline (vehicle upper/underbody) | RM 81* | 0,25-1.25% | ||
Floor cleaning | Food industry/ cutting plants | Intensive deep cleaner | RM 750* | 0,25-1,25% |
Industrial cleaner | RM 69* | 0,5-3% | ||
Beverage/winery businesses, municipality | Intensive deep cleaner | RM 750 | 0,25-1,25% | |
Industrial cleaner | RM 69* | 0,5-3% | ||
Car/truck workshop | Intensive deep cleaner | RM 750* | 0,25-1,25% | |
Industrial cleaner | RM 69* | 0,5-3% | ||
Marine equipment | Intensive deep cleaner | RM 750* | 0,25-1,25% | |
Industrial cleaner | RM 69* | 0,5-3% | ||
Washing brush | Municipality | Active cleaner, alkaline | RM 81* | 0,25-1.25% |
Active cleaner, neutral | RM 55* | 0,5-8% | ||
Car/truck workshop | Active cleaner, alkaline (vehicle upper/underbody) | RM 81* | 0,25-1.25% | |
Marine equipment | Active cleaner, alkaline | RM 81* | 0,25-1.25% |
* Separator-friendly
Note
For all cleaning work with detergents other than floor cleaning, the surface to be cleaned should be rinsed. In food processing areas, rinsing with drinking water is required.
During unpacking, check the contents for completeness. In the event of shipping damage, please notify your dealer.
Note
No accessories are included in the scope of delivery.
Illustration A
The following attachment kits are available separately:
Illustration B
LED | Blink code | Meaning |
Service menu LED (red) | - | Direction of rotation (wrong rotating field) |
Service LED (red) | lights up | Carry out service/maintenance after 600 h pump operation |
flashes 1x | Leakage on the device or water shortage (dry running) The device switches off. | |
flashes 2x | Current/voltage fault:
The device switches off. | |
flashes 3x | Winding protection contact fault The device switches off. | |
flashes 8x | Communication fault The device switches off. | |
Operation LED (green) | lights up | Normal operation without faults |
flashes 1x | Pump has been running continuously for 30 minutes | |
flashes 2x | Pump has been continuously inactive for 30 minutes | |
Detergent LED (orange) | lights up | Detergent 1 empty |
flashes 1x | Detergent 2 empty | |
System care LED (orange) | lights up | System care empty (only HD St...H) |
(accessory)
Note
No accessories are included in the scope of delivery.
Illustration C
Full pump capacity
When the entire water volume is removed, the water flows via the water inlet, float container, advance pressure pump hot water and high-pressure pump to the high-pressure outlet.
Partial withdrawal
If only part of the water output delivered by the pump is required, the residual amount flows back to the suction side of the highpressure pump via the flow control.
Detergent
Detergent is sucked in from up to 2 detergent containers and added using the detergent dosing valves. To activate the detergent, turn the twist grip to the right. No detergent is drawn in at position 0 and the maximum amount is drawn in at position 6.
Automatic pump start and stop
If the system pressure drops during the standby time due to the opening of a consumer, the pressure switch switches on the highpressure pump. If the consumer is closed again, the pump switches off automatically.
System care (only for HD St...H)
Adding RM 110 system care prevents the formation of lime deposits when operating with hot water. St H devices are suitable for hot water operation up to 85°C, St devices up to 60° water inlet temperature. Depending on the water hardness, the dosing can be adjusted by customer service as required.
* Flow chart with 1 detergent without remote control (delivery status)
** Flow chart with 2 detergents and remote control (optional)
*** Flow chart with 1 detergent and remote control (optional)
* Flow chart with 1 detergent without remote control (delivery status)
** Flow chart with 2 detergents and remote control (optional)
*** Flow chart with 1 detergent and remote control (optional)
Note
Installation may only be carried out by authorised specialist personnel!
Note
The water connection, the high-pressure network and the electrical connection may only be carried out by authorised specialist personnel in compliance with local regulations.
Note
Switch-on procedures will generate short-term voltage drops. Unfavourable mains conditions may cause other devices to be impaired.
ATTENTION
Exceeding the grid impedance
Electrical shock in the event of a short-circuit
The maximum permissible mains grid impedance at the electrical connection point (see Technical data) must not be exceeded.
Contact your electricity supplier in the case of any uncertainties regarding the mains grid impedance at your electrical connection point.
Danger of death from electric shock.
If the device is operated at a socket without an error current circuit breaker or without a protective contact (earthing), there is a danger of death from electric shock in the event of a fault!
Only operate the device at sockets with an earthing contact and with an error current circuit breaker with a nominal fault current of max. 30 mA.
Illustration D
Illustration E
Observe the relevant national regulations when installing the high-pressure lines.
For the above-mentioned guide values, the pipework length and the number of changes of direction and fittings must also be taken into account.
Device with ANTI!Twist: Attach the yellow high-pressure hose connection to the high-pressure gun.
Note
The EASY!Lock system connects components quickly and safely via a single turn of the quick-release thread.
ATTENTION
Rolled-up high-pressure hose
Risk of damage
Fully unroll the high-pressure hose before starting operation.
(option)
Remote controls can be connected between the device and the tapping points. These allow the device to be operated directly at the tapping point.
Various mounting kits for remote controls are available depending on the application.
Function | Description | |
![]() | Reset | After the standby time has elapsed, the device can be restarted directly at the tapping point. |
![]() | Emergency off | |
![]() | On/Off + detergent (turn switch) Single workstation | Switching the device on and off at the tapping point. Selection of whether detergent should be added: No admixture, admixture RM 1 or admixture RM 2, as set on the device. |
![]() | On/Off + detergent (push buttons) up to 5 spots | Switching the device on and off at the tapping point. Selection of whether detergent should be added: No admixture, admixture RM 1 or admixture RM 2 (option), as set on the device. |
Risk of injury
Damaged components can lead to injuries when operating the device.
Check that the device, accessories, supply lines and connections are in perfect condition. Do not use the device if it is not in perfect condition.
Note
The system care tank is only available with the HD St... H is present.
Note
RM 110 prevents calcification of the device and pipelines in the presence of hard water.
Water hardness (°dH) | Scale on the turn switch (1-10) | System care products to be used |
3...7 | 1 | RM 110 |
7...14 | 2 | RM 110 |
14...21 | 3 | RM 110 |
>21 | 4 | RM 110 |
ATTENTION
Risk of injury
Risk of injury from escaping, possibly hot water stream!
Check the device for damage each time before use.
Note
The device is equipped with a pressure switch. The motor only starts up when the high-pressure gun is open.
Risk of injury
The water jet coming out of the pressure control/flow control can cause injuries.
Make sure that the connection between the pressure control/flow control and the steel pipe does not come loose.
Note
At the lowest flow rate, the waste heat from the motor heats the water to approx. 15°C.
Risk of damage as a result of incorrect nozzle
Vehicle tyres can be damaged when cleaning with a round jet.
Always clean vehicle tyres with a flat jet nozzle (25°) and a spray distance of at least 30 cm.
We recommend the following nozzles, depending on the device and the cleaning task:
Nozzle | Spray angle | Pressure (MPa) |
HD 8/18-4 St (H) | ||
045 | 40° | 17 |
043 | 25° | 18 |
045 | 0° | 17 |
HD 10/21-4 St | ||
050 | 40° | 21 |
050 | 25° | 21 |
050 | 0° | 21 |
HD 10/19-4 St H | ||
045 | 40° | 17 |
043 | 25° | 18 |
045 | 0° | 17 |
HD 13/18-4 St | ||
075 | 40° | 16 |
070/072 | 25° | 17-18 |
075 | 0° | 16 |
HDS 17/15-4 St | ||
105 | 25° | 15 |
110 | 0° | 13 |
HDS 17/12-4 St (H) | ||
115 | 25° | 12 |
125 | 25° | 10 |
Risk of injury from detergent
Serious damage to health due to improper use of detergents.
Observe the detergent manufacturer's safety data sheet. Wear the prescribed personal protective gear.
Note
KÄRCHER detergents ensure fault-free operation. Ask us for advice, request our catalog or our detergent information sheets.
Recommended cleaning method
After operating with detergent
The cup foam lance must be flushed after use to prevent the formation of detergent deposits.
After operation with detergent
As an alternative to dosing detergent at the device, detergent can also be added directly at the dispensing points.
Various options are available for this, e.g.a cup foam lance.
Risk of injury from detergent
Health risk due to incorrect handling of detergents.
Adhere to the safety instructions stated on the detergent packaging.
ATTENTION
Risk of damage from unsuitable detergents
Using unsuitable detergents may damage the device and the item being cleaned.
Use only detergents approved by KÄRCHER. Observe the dosing recommendations and notes provided with the detergent.
Use detergents sparingly to help conserve the environment.
Note
KÄRCHER detergents ensure fault-free operation. Ask us for a consultation, request our catalogue or our detergent information sheets.
Illustration G
After the interruption
Readiness time
The operational readiness period starts when the high-pressure gun is closed. The device can no longer be started by opening the high-pressure gun if this operational readiness period (30 minutes) expires. The indicator light flashes green.
Note
The standby time can be set by Customer Service.
Restart standby time
ATTENTION
Risk of damage!
Damage to the device and accessories due to freezing water.
Completely empty the device and accessories after each use.
Protect the device and accessories from temperatures below or equal to 0°C (32°F).
Note
Observe the handling instructions of the anti-freeze manufacturer.
This also provides a certain degree of corrosion protection.
Risk of injury, risk of damage
Be aware of the weight of the device during transportation.
Risk of injury or damage due to non-observance of the weight
Be aware of the weight of the device during storage.
Operator: Work labelled with "Operator" may only be performed by instructed persons capable of operating and maintaining highpressure systems.
Customer Service: Work labelled with "Customer service" may only be performed by KÄRCHER customer service technicians or KÄRCHER-authorised technicians.
We recommend that you choose a service contract to ensure reliable operation of the device. Please contact your KÄRCHER customer service department responsible.
ATTENTION
Risk of damage due to milky oil
Operation with milky oil can lead to damage to the device.
If the oil is milky, inform the authorised Customer Service immediately.
Deposits accumulating in the pipelines increase the flow resistance and the motor load becomes too high.
Flammable gases
Risk of explosion
Do not smoke during the descaling process. Ensure good ventilation.
Acids
Risk of acid burns
Wear safety goggles and protective gloves.
According to legal regulations, only approved boiler solvents with a test certificate may be used for descaling.
Descaling the float container
Descaling the high-pressure system
Note
For the purposes of corrosion protection and neutralising acid residues, we recommend then pumping an alkaline solution (e.g. RM 81) through the device.
Inadvertently starting up device, touching live components
Risk of injury, electric shock
Switch off the device before performing any work on the device.
Remove the mains plug.
Have all checks and work on electrical parts performed by a qualified electrician.
In case of any malfunctions not mentioned in this chapter, contact the authorised Customer Service.
Who is permitted to eliminate faults?
Operator: Work labelled with "Operator" may only be performed by instructed persons capable of operating and maintaining highpressure systems.
Qualified electrician: Work labelled with "Electrician" may only be performed by qualified electricians.
Customer Service: Work labelled with "Customer service" may only be performed by KÄRCHER customer service technicians or KÄRCHER-authorised technicians.
Troubleshooting guide | |||
Fault | Cause | Rectification | Person responsible |
Water stream is uneven | Nozzle is clogged. |
| Operator |
Water supply volume too low. |
| Operator | |
Insufficient or no detergent delivery | Dosage set too low. |
| Operator |
Suction filter in the detergent container is dirty. |
| Operator | |
The detergent suction hose is leaking. |
| Customer Service department | |
Manual detergent dosing valve blocked or defective. |
| Customer Service department | |
Pump not reaching the required pressure | Wrong nozzle. |
| Operator |
Air in high-pressure pump. |
| Operator | |
Suction pipeline system leaking. |
| Operator | |
Not enough water. |
| Operator | |
Fresh water filter contaminated. |
| Operator | |
High-pressure hose is leaking. |
| Customer Service department | |
Pipeline system is leaking. |
| Customer Service department | |
Quantity control faulty. |
| Customer Service department | |
Valve in the pump is defective. |
| Customer Service department | |
High-pressure pump knocking and pressure gauge fluctuates greatly | Vibration dampener is defective. |
| Customer Service department |
High-pressure pump draws in a small amount of air. |
| Customer Service department | |
Detergent container empty and detergent dosing activated. |
| Operator | |
Water supply temperature too high. |
| Operator | |
Not enough water, water inlet/fresh water filter blocked. |
| Operator | |
Valve head or valve springs faulty. |
| Customer Service department | |
Advance pressure pump scaled or faulty (only for HD St...H) |
| Operator | |
System does not start when switched on | Power switch is turned off |
| Operator |
On-site power supply is interrupted. |
| Operator | |
Pressure switch defective |
| Operator | |
The motor circuit breaker has tripped due to overcurrent or failure of one phase of the mains supply. |
| Qualified electrician/ customer service | |
The motor circuit breaker is set incorrectly. |
| Qualified electrician/ customer service | |
Motor circuit breaker for controller and advance pressure pump has tripped. |
| Qualified electrician/ customer service | |
Control fuse on transformer is defective. |
| Qualified electrician/ customer service | |
Control board is faulty. |
| Customer Service department | |
Pump does not start during standby time | Pressure switch or cable to pressure switch is defective. |
| Customer Service department |
System will not switch off | The pump is drawing air through the emptied detergent container. |
| Operator |
Pressure switch faulty. |
| Qualified electrician/ customer service | |
Service indicator light flashes 1x | Leak in the high-pressure system / water shortage. |
| Operator |
Service indicator light flashes 2x | Fault in the voltage supply or current consumption of the motor too high. |
| Operator |
Service indicator light flashes 3x | Motor overloaded or overheated. |
| Operator |
Malfunction occurs repeatedly. |
| Customer Service | |
Service indicator light flashes 8x | Communication fault. |
| Customer Service |
Service indicator light lights up | Maintenance required. The device continues running. |
| Customer Service department |
Exemption reason according to Regulation (EU) 2019/1781 for pump motor: Article 2 (2) a).
Subject to technical changes without notice.
Note
Do not point the high-pressure jet at people, animals, live electrical equipment or at the device itself. Protect the device from frost.
Danger of injury from electrical voltage. Only qualified electricians or authorised and qualified technical specialists are permitted to work on the electrical systems.
According to applicable regulations, the device must never be used with the drinking water network without a system separator. Ensure that the connection to your house water system, with which the high-pressure cleaner is operated, is equipped with a system separator according to EN 12729 type BA. Water that has flowed through a system separator is classified as undrinkable. Always connect the system separator to the water supply and never directly to the device.
Risk of burns from hot surfaces.
The system is switched on and off on the device. The detergent dosage can also be set and error messages can be viewed.
Depending on the system design, further workstations are located at the accessory devices (spraying devices), which are connected to the tapping points. Remote controls can optionally be installed at these workstations.
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Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Kärcher HD 8/18-4 St, HD 10/19-4 St H, HD 13/18-4 St, HD 17/15-4 St Manual
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