INTRODUCING
®
the Marley
MD Cooling Tower
/ The right answer in so many ways /
For decades, SPX Cooling Technologies has been
a leading producer of counterflow cooling towers
for large industrial installations. The Marley MD
takes advantage of this experience by bringing it
down to size.
The Marley MD is a packaged tower, which
makes it a definite go-to solution for light
industry and HVAC applications.
Marley Quality
On A Whole New Scale
We’re well known for our outstanding crossflow
systems. So why select a counterflow tower?
Because the Marley MD tower provides
comparable capacity with a smaller footprint,
expanding the landscape of possible uses.
Marley MD Cooling Tower:
The Right Answer in So Many Ways
Unmatched reliability
Heavy-duty construction,
high-performance design and our
five-year mechanical warranty ensures
consistent, CTI-certified, fully rated
cooling over a wide range of flow and
temperature requirements.
Smaller footprint
Induced draft counterflow design
requires less plan area than
crossflow towers. And because
the tower’s size results in less steel
used, its reduced weight requires
less support structure.
Ease of maintenance
SPX has worked hard to address
the maintenance difficulties long
associated with counterflow towers.
Our MD tower provides larger access
doors, easily removable block fill
and other features that simplify
maintenance. For European towers,
an optional fill removal access door is
now available that complies with HSE
ACoP L8 requirements.
Low energy consumption
Induced draft counterflow equipment
minimizes the energy consumption
by providing lower fan energy than
centrifugal fan counterflow units.
Low-noise
The Marley MD comes standard
with our CTI-certified low-noise fan,
suitable for most noise-sensitive
situations.
Superior Water
Management
To address the “splash-out”
problem typically found in
competitive counterflow
designs, SPX introduces an
industry first: a triple-pass
inlet louver and drift eliminator
that conserves water and
improves winter operation.
Why Counterflow
May Be Your Best Choice
Restricted site conditions
Counterflow towers have different footprints from crossflow towers and
offer layout alternatives. Where space is limited or otherwise restricted,
the counterflow’s smaller footprint can be a perfect fit. In addition to taking
up less site space, counterflow towers may have a lower installed weight.
Plus, piping costs can be reduced since a single inlet is usually standard.
All This...
and Green, Too
Designed to be
environmentally
responsible, the MD
conserves water by
keeping splash-out to
a minimum. And being
remarkably energy
efficient, it doesn’t
waste a
single kilowatt.
Operation and maintenance considerations
Counterflows’ tight louvers prevent sunlight from hitting the collection basin
and therefore reduce algae growth. Counterflow towers offer easy access
from all tower sides. The wet surface is totally enclosed for winter operation
and protection from environmental elements, and the towers provide a
corrosion-resistant spray system.
Value-Added Options
Welded stainless steel
collection basin
For extra protection, all
collection basin parts exposed
to circulating water (including
structural members that
project into the basin) and
all attaching hardware and
basin options are heavy-gauge
series 300 stainless steel.
Marley Geareducer
Marley Geareducers decrease
downtime and labor costs
thanks to longer-lasting fluid.
The suggested lubrication
interval for our Geareducers
is a remarkable five years.
Electric basin heater
This electric immersion heater
is used to help prevent freezing
during cold weather.
Solid-state water level
control package
This package monitors
basin water levels with
solenoid-valve water makeup.
Configurations include makeup
along with high- and low-water
level alarm and cutoff, and
electric basin heater cutoff.
Vibration switch
This option protects against
mechanical failure should the
tower experience high vibration
levels by automatically shutting
down the motor. Manual reset
ensures inspection to correct
initial vibration cause.
Variable speed drive
Our variable speed drive
provides the ultimate in
temperature and sound
control, energy management
and mechanical equipment
longevity.
Control systems
These range in sophistication
from standard fan starters
to Programmable Logic
Controllers that work
in conjunction with your
building or process system.
Sound attenuation
Baffles can be installed
across the length of the air
outlet opening. All baffles
are contained within a
self-supporting steel box.
Splash attenuation is
also available.
Triple-Pass Louvers
Fan Unit
PVC Distribution System
Triple-Pass Drift Eliminators
MC120 Fill
The Proof Is in the Details.
The MD tower is first and foremost
a Marley – and that alone speaks volumes.
Model kW Width Length Height† Tons*
MD 5008 5.5 2565 2743 3912 189
7.5 2565 2743 3912 207
11 2565 2743 3912 234
15 2565 2743 3912 255
MD 5010 11 2565 3658 4013 293
15 2565 3658 4013 317
18.5 2565 3658 4013 341
22 2565 3658 4013 360
MD 5016 11 3607 3658 4851 368
15 3607 3658 4851 403
18.5 3607 3658 4851 431
22 3607 3658 4851 460
30 3607 3658 4851 500
†
Tower height may var y depending on configuration and cell quantity
*Based on .68 m3/hr per ton at 35°C HW, 29.5°C CW, 25.5°C WB
What makes the Marley counterflow tower
stand out from its competitors?
• Triple-pass inlet louvers and drift eliminator for superior
splash-out protection and water conservation
• SPX’s position as “sole source supplier” for all
configurations of cooling towers and fluid coolers
• Marley Geareducer option, offering a five-year,
no-oil-change interval
• Available in multi-cell configurations
• The Marley reputation. Our brand name. Our service.
Our position as an undisputed industry leader in
product quality.
The Bottom Line
As a leading producer of cooling towers for over 100 years, we are
committed to building the best. So, when we decide to offer an
improved line of towers – like the Marley MD – you can be sure that
we’ve made sure it’s going to live up to our standards in every way.
Q uiet By Design
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Ma rle y N C Cl ass Co oli ng T o we r
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Ma rle y A V S eri es C ool ing To wer
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ADDITIONAL MD COOLING TOWER PUBLICATIONS
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Marley MD Cooling Tower
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Marley MD Cooling Tower
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For further information about the
MD Cooling Tower – including engineering
schematics, data, layout requirements and
more – ask your Marley sales representative
for a copy of the following publications:
OTHER SPX COOLING TECHNOLOGIES PRODUCTS
SPX Cooling Technologies offers a full line of
industry leading products – with unmatched
support and innovation designed to help you
get the most out of your cooling process.
Take a look at these other SPX Cooling
Technologies products.
Engineering Data
and Specifications
IOM Manual
Marley NC® Class
Cooling Tower
Marley MCW
Cooling Tower
Marley AV Series
Cooling Tower
SPX Cooling Technologies is a world-leading full-line cooling
tower and air-cooled condenser manufacturer. The company
provides the highest-quality evaporative cooling towers, fluid
coolers and evaporative condensers under the Marley, Recold
and Balcke brand names.
SPX COOLING TECHNOLOGIES UK LTD..
GREGORY'S BANK
WORCESTER WR3 8AB
UNITED KINGDOM
+44 (0) 1905 720 200
info.uk@spx.com
spxcooling.com
In the interest of technological progress,
all products are subject to design and/or
material change without notice.
©2008 SPX Cooling Technologies
uk_MD-08F
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