The high pressure cleaner in the test – knowledgeable & more
January 13, 2017
A high-pressure cleaner is a cleaning device which, thanks to the high water pressure (15 to over 1000 bar), is able to dissolve or remove even strong and persistent soiling. Depending on the device and type of contamination, a cleaning agent is sometimes added as well. High pressure cleaners are usually driven by electrical means or by means of a combustion engine. Some models also have a so-called PTO drive or a hydraulic motor.
The high pressure cleaners are a further development of steam jet cleaners, which were used by the American army in the second world war. Alfred Kärcher was then responsible for the maintenance and repair of these steam jet cleaners. After some work succeeded Kärcher then 1950 to develop the first European high-pressure cleaner, by generated high water pressure by using a pump and therefore could increase the cleaning power of the equipment used by a multiple.
The main differences of the models
Depending on the industry, the task area and the respective cleaning task, the appropriate high-pressure cleaner should also be selected. It is also important to observe the water pressure and the amount of water to be supplied by the cleaner. The high water feed rate is important since it not only ensures a strong impact force, but is also responsible for the removal of the dissolved dirt particles. The best models can be found in the current high-pressure cleaner test for 2015 . This should be thoroughly examined before a possible purchase.
Here, a division into differentiated classes can be made: For example, cleaners of the lower class operate with a pressure of approx. 80 to 100 bar and ensure flow rates of approx. 400 liters per hour. Mid-Range Devices contrast promote triple the amount (1200 liters / h) at a pressure of about 150 to 200 bar . Designed for professional use, devices with over 2000 bar water pressure and a flow rate of approximately 1500 liters per hour are suitable. Such devices are also referred to as “high pressure cleaners”.
How does the cleaner work?
A high-pressure cleaner consists of several components, all of which are important for the proper functioning of the appliance. These include, in addition to the drive motor (of various kinds) and the detergent tank and the high-pressure pump , the high-pressure hose and the high pressure nozzle . The high-pressure cleaner is usually mounted in a frame and is also mounted on a chassis. In order to work with the device, it also has a hand gun. Optionally, some models also have a radiator.
The water or the cleaning agent is brought to a high pressure by means of the high-pressure pump. The high-pressure cleaning agent is then discharged through the cleaning nozzle as a high-speed water jet, which allows to remove even stubborn dirt, or even unwanted and old paint layers of objects and objects.
Protect wood in the outdoor area – How it works!
January 13, 2017
Wood is exposed all year to weather, insects as well as fungi. To keep its healthy substance, it needs the necessary protection. Regular paintings or the lasering of wood contribute significantly to the durability of fences, carports & co. Care should be taken to ensure that no harmful substances are contained in wood preservatives. Unlike lacquers, glazes do not have a covering effect.
This has the advantage that the grain of the wood remains clearly visible. Therefore windows and doors should be treated with an environmentally friendly glaze (thick layer) every two years. Components, on the other hand, should be painted at least once a year with a thin layer. In contrast to glazes, lacquer is somewhat more stable and lasts for about four years.
Which product is safe?
The selection of wood protection products is very diverse. Here consumers of their own health should pay attention not only to the protection of the material, but also to the harmful substances that occur in solvent-based wood lacquers and to avoid this type of glazes as much as possible, which confronts the user with dangerous pollutants. However, a “advantage” of solvent-based glazes is the fact that they penetrate optimally into the wood and more effectively protect it from moisture.
Water-based wood linings (emission heaters) are harmless to health. Available are varnishes, varnishes and wood preservatives in all hardware stores. In addition to paints and varnishes, wood preservatives are also offered, which include biocides against fungi and insects. Products with biocides are preparations and active substances which kill animal and plant organisms on the biological and chemical level.
The chemical poisoning helps to protect building materials and other wood from damage. However, the environmental institute recommends not to use such wood preservatives as these do not have an effect on the target organisms. Anyone who still has access to such resources should read and follow the relevant safety instructions for the handling of wood preservatives.
Observe the marking!
It is often not so easy to distinguish the products from each other. The large number of product names, which the respective product occupies as varnish, primer or glaze,
Consumers often can not determine precisely whether this is a low-polluting paint or a wood preservative.
The supplementary manufacturers’ data often do not provide reliable information. Therefore, consumers should always pay attention to the “Blue Angel” eco-label, as this is a safe sign for paints without harmful biocidal active ingredients.