Profi-editor Martin Zäh tries it out: how can you work with the new frequency-controlled high-pressure cleaners from Meier-Brakenberg? He takes a closer look at them in the report of profi 12/19.
Zäh tested the MBHSTFK 4200 model, which has a maximum capacity of 70 litres per minute at up to 140 bar and can absorb up to 18.5 kW. The use of frequency technology enables the water output of the cleaners to be variable by adjusting the speed at constant pressure. This means that several cleaners can work simultaneously with one frequency-controlled pump and each with the desired amount of water.
The new series distinguishes itself by the integrated frequency converter; this enables a much more compact design of the devices. In addition "the new frequency control of the high pressure cleaners from Meier-Brakenberg reacts much faster to any pressure changes... The pump unit reacts without great delay to opening and closing of the gun", the testers say. This means that the frequency-controlled high-pressure cleaner can be used very well at full power for cleaning surfaces and can also be cleaned carefully with small amounts of water. All it takes ... "is a quick turn of the hand valve and the full power of the unit is available again in no time - a truly fascinating technology", quote profi 12/19.
The longevity of the stationary devices is also a clear added value. Among other things, the crankshaft pumps have a connecting rod made of bronze instead of aluminium.
In the article, Zäh discusses further advantages of the new frequency-controlled high-pressure cleaners, such as high working comfort and more sensitive cleaning.
