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Steam cleaning method
1. This is the only cleaning method classified as "deep cleaning". All the others
are considered "light surface cleaning" because they are incapable of removing
soil deep in the pile. Also, all other methods leave large amounts of cleaning
agent in the carpet after cleaning.
The maintenance brochure published by the world's largest carpet manufacturer,
Shaw Industries, recommends this method, because its own research indicates that
it provides the best capability for cleaning.
This method is frequently called "steam" cleaning due to the fine spray of water
used to force dirt out of the carpet which is sucked up by the vacuum slot
immediately in front of the spray. Seldom is real live steam used, however. This
process consists of spraying a solution of water and detergent into the carpet
pile and recovering the water and soil with a powerful vacuum into a holding
tank. This can be done from a truck-mounted unit outside the home with only the
hose and floor tool brought inside, or by a portable, system brought into the
home or office.
From a health standpoint, the truck-mounted system is preferred because the dirty
air and humidity are exhausted outside rather than recirculated around the house.
Additionally, truck-mounted systems usually are more powerful than portable units
and do a much better cleaning job and get the carpet dry more quickly.
With some truck-mounted systems (called PTO's), the vehicle itself must run in
neutral during the cleaning and in many others a separate engine (sometimes with
t
a propane or oil-fired heater) is used to power the unit and heat the water. In
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both cases, the van MUST be parked well away from the house and positioned so
that exhaust fumes do not enter the house. All-electric systems, such as the
Bane-Clene systems, do not have this problem.
n.
Depending upon the equipment, temperatures may range from cold tap water to
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boiling hot water and even super heated water over 200 degrees F. Of course, with
extremely high temperatures, there are dangers of scalding should a solution line
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break.
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