The most common sources of error when working with pure water
It is a fact: the use of pure water has revolutionized window cleaning and brings about significant time and cost savings – at least when used correctly. Window cleaners who have little experience with pure water systems in particular make errors during use. The result? Streaks, smears and other unsightly residues on the window surface. clean magazine reveals all and explains how to do it properly.
From impatience, through the output value of the water, to wooden frames and well water – we explain several of the most common sources of error when working with pure water.
Source of error: impatience
The golden rule when working with pure water: do not work hastily; instead, work thoroughly – it is always worth it in the end. The time savings compared to traditional cleaning methods are still immense!
Source of error: incorrect output value of the water
The water used for window cleaning should always have an output value of 0 ppm. It is also acceptable to have an output value of up to 20 ppm when cleaning facades with non-reflecting surfaces. Make sure that you regularly check the display or monitor the value with a TDS meter. If the output value is incorrect, you may have to change the resin.
Source of error: insufficient thorough cleaning
If you are cleaning a property with pure water for the first time, you should do this thoroughly – i.e. start intensively. Tensides, impurities, deposits, minerals and dirt particles must be removed from the window surfaces. Then carefully rinse, rinse, and rinse again.
Source of error: dirty brushes
If you have been working with soap, soap residues may be left in the brush or in the hose. Old impurities, such as spider webs and other dirt, may also cling to the bristles. Make sure that you always keep the brush clean so that it does not transfer any impurities to the window surface.
Source of error: method change
If you clean with pure water, then do it regularly and do not keep changing to another cleaning method. Otherwise, source of error 2 will occur again.
Source of error: wooden windows
If wooden windows are varnished, unmanufactured or oiled, you should avoid working with pure water where possible. The water draws oils and sometimes tannic acid out of the wood and distributes it over the window surface or other surfaces.
Source of error: varnished windows
Examine varnished windows carefully beforehand – if the varnish is delicate or already cracked and could flake off, you should avoid using pure water.
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