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Atlas Cd20+-335+Pressure Dew Point -40°C Desiccant Air Dryers Air
Treatment
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Air treatment, a crucial investment
Why you need quality air Compressed air contains oil, solid
particles and water vapors. Together, they form an abrasive, often
acidic, oily sludge. Without air treatment, this murky mix will
enter your compressed air system, corroding pipe work, damaging
pneumatic tools and potentially compromising final products.
How do desiccant dryers work?
Desiccant dryers consist of two towers filled with desiccant. Wet
compressed air passes directly through the substance, which adsorbs
the moisture. The desiccant has a finite adsorption capacity before
it must be dried out. Hence the twin tower design. While one tower
is drying air, the other is being regenerated.
CD 20+-335+
Cerades™ efficiency & continuous operation
1, Cerades™
The CD 20⁺-335⁺ is the first dryer to use the revolutionary Cerades™
desiccant developed and patented by Atlas . Compressed air is
channeled straight through the solid desiccant, as opposed to
pushing its way through loose desiccant beads. As a result, you
enjoy:
• Lower energy costs and a minimal pressure drop thanks to the
straight, no-resistance air flow.
• Better air quality and longer service intervals because Cerades™
lasts longer than loose desiccant, which decays significantlyover
time.
• Environmental and health protection, lower operational costs,
and less downtime as Cerades™ eliminates desiccant dust and the
need to filter it out to reach ISO 8573-1:2010 Class 2 for
particles.
• Trouble-free installation and continuous operation as Cerades™
can be mounted horizontally.
• A smaller dryer size as Cerades™ can handle a higher air flow.
2 , High-efficiency operation
Designed to perform reliably at continuous operation of 100%
airflow, whereas most dryers on the market are only built to work at
70% to 80%. This includes a constant pressure dew point of
-20°C/-5°F, -40°C/-40°F,
-70°C/-100°F* as standard. The pressure dew point can
also be adjusted for seasonal or application changes.
*-70°C/100F uses molecular sieve desiccant
3, Advanced energy savings
• Up to 70% less pressure drop compared to previous
model.
• 15% purge air reduction compared to the standard
CD model.
• Optional Dew Point Dependent Switching. The
dryer will only switch to the next tower when the desiccant is
saturated, as measured by the dew point sensor. During this cycle
time extension, the dryer consumes no purge air, resulting in
asignificant reduction in energy use.
• Dew point can be set to the requirements of your
application to reduce energy consumption.
4, Unique manifold/valve design
• Large pipe diameter minimizes pressure drop for advanced energy
savings.
• Electronically operated 3/2 valve reduces risk of breakdowns and
offers reliable control duringairflow fluctuations. With this new
design, vessel switching operates unfailingly even in rough
conditions.
• Service openings ensure easy service of the moving parts of the
valve system.
5, New silencing design
Innovative silencing system with large front silencer provides
quiet performance with minimal pressure drop.
6 , Advanced control and monitoring system
• State-of-the-art Elektronikon® Touch control and monitoring
system with warning indications, dryer shutdown and maintenance
scheduling.
• Standard SMARTLINK remote monitoring to maximize air system
performance and energy savings.
• Pressure dew point sensor for Dew Point Dependent Switching
standard with Elektronikon® Touch and optional with DC1 controller.
7, Service and maintenance-friendly
• Compact Cerades™ blocks allow for quick and easy maintenance.
• Loose desiccant decomposes over time, releasing a fine dust into
the air system, which requires extra filtration and maintenance.
This dust is also a health and environmental hazard, as it
circulates in the ambient air during desiccantreplacement. Cerades™
eliminates this dust problem.
8 , Integrated inlet filter
• A highly efficient UD⁺ pre-filter prevents oil contamination to
increase desiccant lifetime.
• For mounting directly on the inlet of the dryer for low pressure
drop.
• Easy to assemble and maintain. No extra piping and filter
connections are required.
• An after-filter is not required to reach ISO 8573-1:2010 Class 2
for particles. To reach Class 1,a PDp⁺ filter is recommended.
9 , Nozzle purge set
Offers flexibility in optimizing regeneration pressure. Standard is 7
bar; 4-bar, 5.5-bar, 8.5-bar, 10-bar,11.5-bar, 13-bar and 14-bar
nozzles come as separate parts. 10 Advanced options
• Pressure dew point sensor for DC1 controller.• Wall mounting kit.
Technical Specifications
Type | Pressure dew point | Inlet capacity 100 psig | Pressure drop excluding filter | Filter size | Dimensions(L x W x H) | Weight | |||||||
Pre-filter | |||||||||||||
°C | °F | l/s | m 3 /h | cfm | bar(e) | psig | 0.01 μm 0.01 ppm | 1 μm | mm | inch | kg | Ibs | |
CD 20+ | -40 | -40 | 20 | 72 | 42 | 0.1 | 1.2 | UD25+ | NA* | 3394 x 64 x 1205 | 15.51 x 34.02 x 47.44 | 95 | 209 |
CD 30+ | -40 | -40 | 30 | 108 | 64 | 0.1 | 1.2 | UD25+ | NA* | 394 x 864 x 1205 | 15.51 x 34.02 x 47.44 | 100 | 220 |
CD 40+ | -40 | -40 | 40 | 144 | 85 | 0.1 | 1.2 | UD45+ | NA* | 394 x 904 x 1205 | 15.51 x 35.59 x 47.44 | 110 | 242 |
CD 55+ | -40 | -40 | 55 | 198 | 117 | 0.1 | 1.6 | UD60+ | NA* | 394 x 904 x 1495 | 15.51 x 35.59 x 58.86 | 140 | 308 |
CD 65+ | -40 | -40 | 65 | 234 | 138 | 0.2 | 2.3 | UD60+ | NA* | 394 x 904 x 1495 | 15.51 x 35.59 x 58.86 | 165 | 365 |
CD 85+ | -40 | -40 | 85 | 306 | 180 | 0.2 | 3.6 | UD100+ | NA* | 394 x 934 x 1835 | 15.51 x 36.77 x 72.24 | 165 | 363 |
CD 105+ | -40 | -40 | 105 | 378 | 222 | 0.1 | 1.7 | UD100+ | NA* | 564 x 934 x 1495 | 22.20 x 36.77 x 58.86 | 215 | 473 |
CD 125+ | -40 | -40 | 125 | 450 | 265 | 0.1 | 1.7 | UD140+ | NA* | 564 x 964 x 1495 | 22.20 x 37.95 x 58.86 | 234 | 515 |
CD 170+ | -40 | -40 | 170 | 612 | 360 | 0.2 | 3.1 | UD180+ | NA* | 564 x 964 x 1835 | 22.20 x 37.95 x 72.24 | 276 | 607 |
CD 190+ | -40 | -40 | 190 | 684 | 403 | 0.2 | 2.2 | UD180+ | NA* | 734 x 964 x 1495 | 28.90 x 37.95 x 58.86 | 331 | 728 |
CD 250+ | -40 | -40 | 250 | 900 | 530 | 0.2 | 3.5 | UD310+ | NA* | 734 x 1042 x 1835 | 28.90 x 41.02 x 72.24 | 389 | 856 |
CD 335+ | -40 | -40 | 335 | 1188 | 699 | 0.3 | 4.4 | UD310+ | NA* | 929 x 1042 x 1835 | 36.57 x 41.02 x 72.24 | 500 | 1100 |
Reference conditions BD + : Performance data per ISO 7183:2007.
Compressor air inlet temperature: 35°C/100°F.
Inlet relative humidity: 100%.
Reference conditions BD + ZP (Zero Purge):
Performance data per ISO 7183:2007.
Ambient air temperature: 25°C/77°F.
Ambient air relative humidity: 60%
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