Flooring | In Practice |
Effortless removal of the old coating residue with a scrubber dryer machine with roller head. Photos: Kärcher
Diverse tasks involved in cleaning schools
From floor cleaning to
Regular cleaning in schools, especially floors, inventory, washrooms, kitchens, gyms, athletic
areas and outdoor paths, make them not only more attractive, but fulfill hygiene regulations and
preserve their value.
When defining hygiene plans, schools are obliged to set up
in-house practices that comply with hygiene measures in order to
minimize the risk of infection. In addition to avoiding this risk,
other specific aspects of general hygiene must be considered, e.g.
floor cleaning. Outdoor areas must also be kept neat by regular
sweeping; dirt must be prevented from getting into the building
to the greatest extent possible.
Professional, systematic cleaning and maintenance are crucial for
the service life of a floor covering. They are also the most important
tasks of building cleaners. This is especially true for basic cleaning
or decoating of elastic floor coverings. The two methods for doing
this differ in the use of machines as well as the time needed.
Linoleum, an elastic floor covering, is frequently found in schools.
It is a natural product that consists of linseed oil, cork and wood
flour, and a jute backing layer. This surface is only partially
to alkaline concentrations (pH 10).
Basic cleaning with roller scrubbers
Two methods are used for basic cleaning, i.e. decoating floors. In
addition to using a slow-running one-disc machine, it can also
done with a roller scrubber. At first, the cleaning agent is applied
section by section in straight lines with little overlap. During the
exposure time, the roller scrubber
crosses the area several times
at 90-degree angles. If necessary,
more cleaning solution is added
to prevent it from drying.
Due to its strong, uniform contact pressure (up to 210 grams per
square centimeter) over the entire working width, its high speed
(1,100 revolutions per minute) and the excellent floor contact
(roller pads), a very good result is achieved. The efficiency of the
green roller pads, which is due to their self-cleaning effect, greatly
speeds up the decoating process.
When the coating residue is completely removed, the next step is
section-by-section take-up of the dirty solution
with the scrubber
dryer machine. This is much faster than the traditional method
with the wet/dry vacuum and thus saves a great deal of time.
The surface is then rinsed with clear water, again using the roller
scrubber to cross the surface section by section using clear water
in the one-step method. The additional mechanical processing
with the roller optimally removes any remaining detergent residue
from the surface, thus excluding the risk that the new coating
GLOBAL CLEANING | ISSUE 2018 45