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THE
IMPORTANCE OF IMPACT RATE IN CLEANING PERFORMANCE
The Steamin Demon II
connects directly to a faucet for continuous fresh-water feed,
thereby eliminating the need and inefficiency of constantly
filling a fresh-water tank. As a result, it uses the available
water pressure of the water system to which it's connected.
Municipal water systems typically deliver 50 to 80 pounds of
pressure.
Since the invention of the first carpet cleaning extractor, the
question has been: Which is more important, water pressure (PSI)
or water flow (GPM)? The answer is that they are both important
because together they determine impact rate (IR). Impact rate is
the key factor in determining the effectiveness of all
extraction cleaning systems. Machines with higher IRs clean
better.
The formula for calculating Impact Rate is (GPM x PSI) x
sqrt(0.0526) where GPM is gallons per minute of water flow, PSI
is pounds per square inch of pressure, and sqrt is the square
root..
Typical Impact Rates for a portable extractor, a truckmount, and
the Steamin Demon II, are shown in the following example:
Typical portable (0.8 GPM x 100 PSI) x
sqrt(0.0526) = 0.4208 IR
Typical Steamin Demon (3.5 GPM x 60 PSI) x sqrt(0.0526) = 1.4260
IR
Typical truckmount (1.4 GPM x 400 PSI) x sqrt(0.0526) = 1.4728
IR
When you combine the Steamin Demon's high Impact Rate with it's
ability to recover up to 94% of the water it delivers (depending
on carpet type), it becomes apparent why the Steamin Demon II
can provide cleaning performance comparable to that of a
truckmount. And this, incredibly, comes in a portable machine
that weighs only 33 pounds! Before purchasing new portable
extractors, calculate the impact rates yourself. You'll
determine which will provide the best cleaning performance, and
thus the best return on investment - especially when you factor
in the Steamin Demon's greater efficiency because you don't need
to keep filling fresh-water tanks and emptying waste-water
tanks.
#1.
GPM ________ x PSI __________ = __________ x 0.0526 =
___________
#2. GPM ________ x PSI __________ = __________ x 0.0526 =
___________
#3. GPM ________ x PSI __________ = __________ x 0.0526 =
___________
#4. GPM ________ x PSI __________ = __________ x 0.0526 =
___________
#5. GPM ________ x PSI __________ = __________ x 0.0526
=___________
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