Product Overview

2008 Altom Ct. • St. Louis, MO 63146 • 800-554-5499 • www.nucalgon.com
Calgon is a licensed trade name • (1012) 3-974
PREVENTATIVE MAINTENANCE &
TREATMENT FOR EVAPORATIVE
COOLERS
• Prevents scale & corrosion
• Inexpensive... lasts all season
• Easy to install
• Increases pad life
• Maintains cooler performance
• Utilizes 6R Micromet
®
, a food-grade
NSF-certified polyphosphate
Description
For over fifty years, a specialized slowly soluble, food-
grade inorganic phosphate known as Micromet has been
used to stabilize or “sequester” hardness minerals, and
thereby avoid or prevent scale formation in ice machines,
cooling towers, humidifiers, etc. For evaporative coolers,
a special form of this glassy phosphate known as 6R
Micromet® has been used effectively in preventing scale
and maintaining equipment efficiency. It is NSF-certified,
and it is the active ingredient in Evap-Treat.
Since evaporative coolers are an established and proven
method of cooling and since it is nearly impossible (due
to expense, practicality, etc.) to use mineral-free water,
a procedure or preventative maintenance program for
dealing with the scale-forming minerals must be utilized
so that scale is prevented and the equipment operates at
optimum efficiency. Evap-Treat™ fits this need.
Application
Evaporative coolers, or “swamp coolers” as they are often
referred to, are devices used for air conditioning or cooling
in drier climates where dry-bulb temperatures of 90ºF or
more occur simultaneously with wet-bulb temperatures
of 75ºF and below. The wider this gap, the greater the
opportunity for efficient evaporative cooler applications.
They accomplish cooling by adding moisture or humidity
to the ambient air.
Water is allowed to flow over a media or evaporative pad
while warm, dry ambient air is forced across the wet
media. Evaporation is induced, and the dry ambient air
is cooled. Evaporative coolers can be used to directly
cool ambient air for comfort air conditioning, or used as
“pre-coolers” on mechanical air conditioning (air-cooled)
condensers.
As water is brought into an evaporative cooler and
evaporated, its scale-forming minerals remain behind in
the recirculating water and begin to “fall out” or precipitate
as scale, plugging the media, reducing evaporation space
for the water as well as air flow. In turn, the equipment’s
efficiency is reduced and the desired cooling is not
achieved. Unfortunately, the process continues until the
media pad becomes a “solid piece of scale.” Evap-Treat
can prevent this.
Packaging
For coolers up to 6,500 cfm 4173- 04
For coolers up to 10,000 cfm 4173- 06
Water Treatment Products
Evap-Treat
™
Nu-Calgon Product Bulletin 3-974