The Karcher HDS 7/9-4 M medium class 110V hot water high-pressure cleaner with a host of user-friendly features.
Kärcher’s HDS middle class hot water high-pressure cleaners reach very high levels of performance, reliability and economy. With innovative features such as the eco!efficiency mode, offering fuel savings of up to 20% without compromising cleaning performance, 4-pole motors for high performance and long life, on-board diagnostics, and 3-year burner coil warranty, the HDS middle class range provides our customers with the toughness, cleaning power, and low running costs they demand. The Karcher HDS 7/9-4 M features a 4-pole, air-cooled 110V electric motor with long-life bearings and a 3-piston axial pump with ceramic pistons. With water flow of up to 700 litres per hour, and up to 90 bar pressure, the 7/9 is a great all-round machine with superb performance for daily and deep cleaning jobs where 110V power supply is required.
Features and benefits

Efficiency
In the Eco setting the unit operates in the most economical temperature range (60°C) with full water flow. Burner cycles are optimised to reduce fuel consumption by up to 20% compared to full-load operation.
Maximum efficiency
Highly efficient burner technology. 4-pole, slow-running electric motor guarantees a long working time.
Operational reliability
The large, integrated fine-mesh water filter reliably protects the high-pressure pump against dirt particles. An integrated exhaust gas thermostat switches off the drive motor if the exhaust gas temperature exceeds 300°C. The soft damping system (SDS) compensates for vibrations and pressure surges in the high-pressure system.Storage |
|
Mobility concept |
|
Save energy and time: EASY!Force high-pressure guns and EASY!Lock quick-release locks. |
|
Specifications
Technical data
Current type (Ph/V/Hz) | 1 / 110 / 50 |
Flow rate (l/h) | 350 - 700 |
Operating pressure (bar/MPa) | 30 - 90 / 3 - 9 |
Max. temperature (°C) | 80 - 155 |
Power rating (kW) | 3.2 |
Consumption fuel oil (kg/h) | 4.6 |
Power cable (m) | 5 |
Fuel tank (l) | 25 |
Weight (kg) | 162.1 |
Dimensions (L x W x H) (mm) | 1330 x 750 x 1060 |
Equipment
- Trigger gun, EASY!Force Advanced
- High-pressure hose, 10 m
- Spray lance, 1050 mm
- Power nozzle
- Tanks for detergent, scale inhibitor and fuel can be filled from outside
- Control panel with indicator lamps
- Pressure switch control
- Electronic service control with LED display
- Two detergent tanks
- Dry running protection
Accessories
600 mm stainless steel lance (manual coupling) with ergonomic handle for ease of use and protection. Rotatable 360° under pressure.
The Karcher FR 30 ME high-quality, hot water resistant surface cleaner. The FR 30 ME has a stainless steel casing with a working width of 300 mm, ideal for indoor cleaning, for example in the food industry.
For hard-to-reach areas: High-pressure articulated joint with infinite angle adjustment up to 120°. Simply attach directly to the spray lance of the pressure washer.
10 m high-pressure hose (M 22 x 1.5) with kink protection. With patented rotating AVS trigger gun connector and manual coupling. Further data: DN 6/155°C/250 bar.
20 m high-pressure hose (M 22 x 1.5) with kink protection. With patented rotating AVS trigger gun connector and manual coupling. Further data: DN 8/155°C/315 bar.
Brass double connector for connecting and extending high-pressure hoses. With rubber protection. Connector: 2x M 22 x 1.5 m.
Cleaning Agents
Scale inhibitor for hot water high-pressure cleaners with integral corrosion protection, especially for use in new HDS units with System Care option. The System Care Advance 1 RM 110 ASF formula offers improved protection against limescale deposits on heater coils (up to 150 °C) and provides integral corrosion protection for components in contact with water.
For optimal protection of hot water high-pressure cleaners with System Care option. System Care Advance 2 provides the following protection functions for your equipment:– Protection against limescale deposits in the heating coil (up to 150°C) – Pump care additive for continuous lubrication and care of the high-pressure pump – Protection against black water contamination (rust formation in the heating coil in the case of very soft water) – Corrosion protection for all parts in contact with water.
Powerful facade cleaner with gel formula. Removes soot, oil, grease and environmental stains. Suitable for façades clad with stone, brick, rough-cast plaster, plastic, wood and glass.
Powerful deep cleaner effectively removes the most stubborn stains, such as oil, grease, soot, blood and proteins. Low foam production. Particularly suited for floor cleaning by machine and for processing with hard surface cleaners. NTA free.
Removes even the toughest grease, protein, oil and soot soiling from floors, working surfaces, machines, etc. (particularly suitable for food processing operations). Easy to use, gentle cleaning action. Washes clean without residue.
The alkaline Foam Cleaner RM 838 is for contactless vehicle washing which effortlessly removes heavy oil and grease stains, insect residues and road dirt and is gentle on paintwork.
WHY SHOP WITH KÄRCHER CENTER TRAFALGAR?
1-3 Working Days Delivery
on all orders
Call 01403 273 444
for Expert Advice and Support