Desiccant and Continuous Duty Air Dryers0 pages

Desiccant and Continuous Duty Air Dryers
Moisture or oil contamination in the air supply can prevent abrasive powder from flowing freely through your microabrasive blasting system. Clean, dry shop air alone is inadequate for micro-abrasive blasting: to achieve consistent
abrasive media flow, the compressed air source must have a dew point of -25°F. Air dryers are necessary to prevent
moisture from causing nozzle stoppage leading to unnecessary repairs, and costly down time.
Air dryers for the occasional blaster to the continuous fully automated system
AD5100 Series Desiccant Air Dryers
A desiccant dryer is a good, low cost solution to
use with Comco MicroBlaster® MB1000 series
blasting machines especially when usage is low or
intermittent.
The AD5100 dryer contains silica gel desiccant
beads that absorb moisture to dewpoints as low as 25°F.
AD5300 Series Continuous Duty Air Dryers
The Comco AD5300 series Air Dryers are designed
for continuous duty automatic operation. They provide
clean dry air with a dewpoint as low as -25°F and at
flow rates up to 20 SCFM depending on the model
selected. Passive units, they require no external power
source and are easily maintained by periodic
replacement of the pre-filter elements.
BENEFITS
BENEFITS
Heavy duty unit suited for industrial use
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Low cost
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Easy to install
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Clean, dry air optimal for low or
intermittent single MicroBlaster® use
Energy efficient, non-electric design
provides low operating costs
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Continuous duty automatic operation
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Clean, dry air for optimal microabrasive blasting
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Minimal maintenance
First a pre-filter removes most contaminants before
they reach the desiccant chamber. The air then
moves on to the desiccant cartridge for final drying
where the rest of the moisture is absorbed. The bead
turns from dark blue to light blue and pink as it
becomes saturated, indicating time for replacement.
The life of the desiccant charge depends on the
moisture and/or oil in the air, how much air is flowing
through it, and how often the system is used. In damp
environments weekly replacement may be necessary.
Used desiccant may be reactivated if not
contaminated with oil, but will not last as long as a
new charge. If the desiccant becomes saturated very
quickly, an automatic system should be considered.
How They Work
Pre-filters are mounted in front of the membrane
dryer to protect it by removing oil, moisture, and debris
from the air supply. The air then enters the drying
chamber where water vapor collects on the membrane
dryers’ hollow fibers. Clean dry air is supplied to the
application. A small portion of the dry air is redirected
back along the length of the fibers to sweep out the
water vapor that has soaked into the membrane
causing a hissing sound. The moisture-laden vapor is
vented to the atmosphere through a purge.
Comco Inc. 2151 N. Lincoln Street / Burbank CA 91504-3344, USA / 818-841-5500
E-mail: sales@COMCOinc.com / Fax: 818-955-8365 / www.COMCOinc.com
AD5100 / AD5300 PS
1/2006
Copyright 2006, Comco Inc., All Rights Reserved
How They Work