IntroducIng
the Marley® MD Cooling Tower
/ The right answer in so many ways /
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Marley MD Cooling Tower:
The Right Answer in So Many Ways
Unmatched reliability
Low energy consumption
Heavy-duty construction,
Induced draft counterflow equipment
minimizes the energy consumption
by providing lower fan energy than
centrifugal fan counterflow units.
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.
Low-noise
the Marley Md comes standard
with our ctI-certified low-noise fan,
suitable for most noise-sensitive
situations.
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.
Superior Water
Management
Ease of maintenance
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.
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.
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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
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.
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
Value-Added Options
single kilowatt.
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.
Electric basin heater
Variable speed drive
this electric immersion heater
is used to help prevent freezing
during cold weather.
our variable speed drive
provides the ultimate in
temperature and sound
control, energy management
and mechanical equipment
longevity.
Solid-state water level
control package
this package monitors
Control systems
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.
these range in sophistication
from standard fan starters
to Programmable Logic
controllers that work
in conjunction with your
building or process system.
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.
Vibration switch
Sound attenuation
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.
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.
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Triple-Pass Louvers
Fan Unit
PVC Distribution System
Triple-Pass Drift Eliminators
MC120 Fill
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The Proof Is in the Details.
The MD tower is first and foremost
a Marley – and that alone speaks volumes.
Model
kW
5.5
7.5
11
Width
2565
2565
2565
2565
2565
2565
2565
2565
3607
3607
3607
3607
3607
Length
2743
2743
2743
2743
3658
3658
3658
3658
3658
3658
3658
3658
3658
Height†
3912
3912
3912
3912
4013
4013
4013
4013
4851
4851
4851
4851
4851
Tons*
189
207
234
255
293
317
341
360
368
403
431
460
500
Md 5008
15
Md 5010
Md 5016
11
15
18.5
22
11
15
18.5
22
30
†Tower height may vary 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
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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.
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AddiTioNAl Md CooliNG ToWER publiCATioNS
oThER SpX CooliNG TEChNoloGiES pRoduCTS
For further information about the
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.
Md Cooling Tower – including engineering
schematics, data, layout requirements and
more – ask your Marley sales representative
for a copy of the following publications:
/
Marley MD Cooling
Tower
/
/
M a r le y N C C la s s C o o lin g Tow e r
/
/
Marley MD Cooling
Tower
/
/
M a r le y A V S e r ie s C o o lin g T o w e r
/
Q
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t
B
y
D
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s
i
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n
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
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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