How does pure water fed window cleaning work? – Extraclean: North East & County Durham Window Cleaning Services – Reach and Wash
As well as using tradition squeegee window cleaning techniques for smaller areas which may require special attention, Extraclean Window Cleaning Services also operate Water Fed Pole Window Cleaning Systems. One large advantage to using Water Fed Pole Systems is that Window Cleaning no longer poses as much of a health and safety risk, given that ladders are no longer required to reach and wash windows and glass on buildings with more than one storey or level.
Another advantage of using Water Fed Pole Systems is that larger commercial or industrial properties and buildings can be cleaned more quickly and efficiently, meaning that less inconvenience is caused to employees, customers or visitors.
How does pure water fed pole window cleaning work?
How does the reach and wash window cleaning system work? work?
Pure water is fed through a hose reel, up a water fed pole and through jets in the brush where it is sprayed onto the glass. When the brush reaches the surface of the glass and frames, it loosens the dirt and grime. Any dirt or dust particles are flushed away by the constant stream of pure water coming from the water fed pole. The glass is rinsed and left to dry naturally leaving a spotless, streak free finish.
Water fed Pole using pure water to clean glass…
<h2?Why is it necessary to use pure water in water fed pole window cleaning? Why not ordinary tap water?
If ordinary tap water to be sprayed onto windows and left to dry in it’s natural state – it would result in the glass appearing milky white in colour when dried, and you will be able to write your name on the glass surface with your finger.
This water mark left on glass are caused by the mineral content of the tap water.
So whilst ordinary tap water is fine for traditional window cleaning the use of a squeegee, Water fed pole window cleaning is different because instead of tap water, the equivalent of distilled water is used. That is – Water without any mineral content, (or de mineralised water) so that when pure water dries it leaves the windows perfectly clean. In addition, pure water does not exist naturally and will always absorb atmospheric elements as it returns to its natural state so when applied to the glass, dirt and grime are absorbed.
All water from out of a tap contains a quantity of minerals. The quantity differs from one area to another because of the variety of environment and ground rock strata that rainwater passes through before it reaches our rivers and ground-water storage reservoirs – as can be seen in the water cycle illustration below.
If you were to buy bottled spring water from the supermarket and read the analysis label you will notice that water contains minerals such as magnesium, calcium, chlorides, bi-carbonates, sodium, potassium, nitrates, sulphates, and silica etc….that are dissolved in the water.
A TDS meter therefore is required to identify the total quantity of minerals that are dissolved in tap water thus ensuring that the water used for window cleaning is what is known as “no water” i.e Water containing no minerals. TDS stands for: – Totally Dissolved Solids.
TDS meters give a three digit reading. If you were to test the water at your tap, the meter would probably show a reading of between 035 parts per million (035 ppm) and 600 parts per million (600 ppm) This is fine for drinking, but it is not suitable for water fed pole window cleaning. If you want to wash glass and end up with perfectly clean windows, all the minerals need to be filtered or extracted from the water, giving a TDS reading of 000 ppm (indicating zero mineral content or total demineralisation). The area where you live or work will effect the TDS reading, and determine whether you are living a hard water area or a soft water area. For example, if you are living or working in a hard water area then the overall cost of purifying water will be more than it would if you were living in a soft water area. Please refer to the map below to see whether you are located in a hard or soft water area.