The HDS 10/21-4 St is a stationary hot water high-pressure cleaner with an oil burner that provides an operating pressure of up to 210 bar. Its 4-pole, low-speed electric motor delivers the required power for continuous operation. The crankshaft pump with brass cylinder head delivers up to 1,000 liters of water per hour. The water break tank integrates a limescale protection system and a water filter to protect the pump. Detergent is drawn in and metered via a control valve, with a low-level indicator alerting the user when the detergent container is empty. Electronic monitoring of the oil burner and system parameters provides continuous operational control. A rotary switch or an optional remote control enables system operation, while service and maintenance points are structured for ease of access. A range of available accessories allows the HDS 10/21-4 St to be adapted to different cleaning tasks. The unit can be equipped with a pressure gauge, an operating hours counter, a second detergent dosing system, and a pressure relief system.
High-performance crankshaft pump
Crankshaft pump with brass cylinder head and ceramic piston Especially solid and extremely dependable. Longer working times, less maintenance effort and lower costs. Ideal for industrial use.
Water-cooled 4-pole electric motor (oil-heated)
Water-cooled motor for a high performance and long service life. 4-pole, slow-running electric motor guarantees a long working time. Ausgelegt für den kontinuierlichen Einsatz bei optimierter Service zugänglichkeit.
Burner technology with min. 91% efficiency
High-output burner with upright heating coil and continuous ignition without deflagration. Engineered Kärcher burner technology with demand-based fuel feed Burner with high effectiveness (> 91%), low fuel consumption and very low exhaust emissions.
Electronic monitoring for greater operating safety
Switches off in case of leaks or phase failure. Automatic switch-off in case of low voltage range or overvoltage. Integrated protection and monitoring systems for flame and exhaust gas temperatures, water shortage, overpressure, and limescale status ensure continuous equipment protection
High-quality equipment
Integrated water reservoir with limescale protection and empty indicator protects the heating coil and the entire system from lime deposits. The housing and frame are made from powder-coated steel The detergent intake system with dosing valve and empty indicator is just part of the high-quality equipment supplied as standard.
Easy and convenient operation
One control for all functions. Easy to learn and use Practical error display informs users immediately and saves time. Particularly user-friendly thanks to self-explanatory symbols. No need for time-consuming induction.
Large, transparent water fine filter
Large, easily accessible water fine filter for protecting the pump against dirt particles in water. Ensures long service life for all high-pressure components. Easy to use, easy to clean.
Cleaning agent suction and dosing system for even better cleaning results
Using the dosage setting function, detergents can be dosed with precision to match the degree of soiling. For accurate and variable cleaning agent dosing.
Service-friendly design with easily accessible maintenance points
Easy access to all service and maintenance components. Comprehensive service network with highly trained service technicians. Display of error codes, operating status, pump maintenance intervals and monitoring for faulty operation of the burner and the entire machine make servicing easier.
High flexibility
The machine can alternatively be controlled with a remote control. In its extensive range of accessories for high-pressure cleaners, Kärcher has the right accessory for every cleaning task and every objective. A time counter and pressure gauge as well as automatic pressure relief to protect accessories and pipelines are available as options.
