SPX Cooling Technologies MarleyAV Series User manual

/ Marley AV Series CoolingTower /

The Marley AV™Series cooling tower is designed
to minimize your costs and maximize your cooling
performance through quick, easy installation and
energy-efficient operation. Its single flow, induced
draft crossflow design offers you pump and fan
energy savings in a small footprint installation.
The AV is an excellent replacement for forced draft
counterflow cooling tower installations.
Every AV cooling tower benefits from all the
knowledge and experience Marley has compiled from
manufacturing cooling products for commercial and
industrial use since 1922.
nIdeal Replacement
Designed to easily replace forced draft blower towers
or other space sensitive installations.
nLow Energy Costs
Highly efficient propeller fans consume half the
energy of blowers. And, gravity water distribution
provides further savings thru lower total pump head.
nEasy Access
Large, 30” x 42” access doors on both endwalls
and “stand-up” plenum area help make the AV easy
to service with generous access to the basin and
mechanical equipment. No “paint can lid” access
hatches.
nLow Piping Costs
Single inlet connection for easy and fast installation.
nLong Life
Rugged G-235 galvanized steel frame, quality factory
assembly. (Optionally available in 300 stainless
steel.)
nAll Season Reliability
Integral louvers eliminate splash-out so towers
operate virtually ice-free in the winter.
nReal World Design
Designed for severe wind, seismic, shipping,
operating and live loads.
nTough MX High-Performance Film Fill
Highly efficient cellular drift eliminators and
honeycomb louvers integrally molded within the fill
sheets.
nAluminum-Alloy Axial Fan
Adjustable-pitch fan blades permit maximum utiliza-
tion of rated horsepower—allows field adjustment to
optimize tower performance.
nRugged Fan Motor
TEFC 1.15 service factor, severe duty, cast iron
motor designed to Marley specifications for cooling
tower duty. Specially insulated for extra protection
from moisture.
nFive-Year Mechanical Warranty
Five-year mechanical equipment warranty.
/Key Benefits /
The AV Series has 38 factory assembled tower models with
117-390 nominal tons per cell.

AV Air Movement System
n Streamlined eased inlet fan cylinder
assures full area, low turbulence airflow
through the cylinder.
n Heavy duty aluminum alloy fan–
adjustable pitch blades.
n 7.5 hp and larger fans are driven by a
high quality, solid backed, multi-grooved
neoprene and polyester v-belt thru a
corrosion resistant aluminum alloy fan
sheave.
n Heavy duty, self-aligning, grease
lubricated roller bearings selected with
an L10 design life of 50,000 to 100,000
hours support the fan and shaft.
n TEFC fan motor, 1.15 service factor,
variable torque design, specially insulated
for cooling tower duty.
n The AV air movement system is
guaranteed against failure for a period
of five full years from date of shipment.
Includes fan, fan shaft, bearings and
mechanical equipment support.
Note: For economical transportation, AV towers are also
available unassembled and crated for export.
For Safety Reasons—always shut down and lock out the
fan motor before entering the plenum.
/Features /
AV Water Distribution System
n Gravity flow distribution system. Easy, nonrestrictive
maintenance. Basin covers are standard.
n Marley Spiral Target polypropylene nozzles for
consistent, predictable water distribution.
n Marley MX thermoformed PVC film fill is suspended
from the upper tower structure by heavy galvanized
steel support members providing clearance between fill
and sloping self-cleaning collection basin floor for easy
basin cleaning. Integral eliminators and louvers keep
circulating water confined to fill over a wide range of air
flow rates.
AV Structure
n Crossflow configuration — easier and safer to inspect,
service and maintain.
n G-235 heavy galvanized steel. Also available in 300
stainless steel.
n Factory-assembled modules, including fan cylinders
— makes final field installation hassle-free.
n Large Access Doors—the generous plenum region in
the AV tower is nonconfining, permitting quick visual
inspection of cold water basin, internal structure, drift
eliminators and mechanical equipment.

Enhance your AV tower installation with options and accessories that will improve the operation, longevity,
maintenance, and accessibility of your cooling tower.
/Optional Equipment and Accessories /
n External Service Platform
Provides easy access to distribution system
without increasing installed height of tower.
Platform with OSHA guardrails is Factory
Mounted, eliminating installation labor cost and
time. Field-installed ladder with optional safety
cage for easy access.
n Stainless Steel Collection Basin
All collection basin parts in the wetted area—
including structural members projecting in the
basin, assembly and attaching hardware, and
all basin options, are heavy-gauge Series 300
stainless steel.
n Stainless Steel Distribution Basin
Corrosion is usually most aggressive in the
hot water distribution basins—stainless steel
provides assurance of long, trouble-free service
life.
n Marley Control System Package
Factory-wired, factory-installed, factory-tested
control center in NEMA 3R enclosure mounted
on tower casing near access door. Complete
with thermostat controller for single or two-
speed motors to maintain chosen cold water
temperature.
n Inlet Trash Screens
Factory-installed, U-edged, galvanized wire mesh
screens work in concert with the internal cellular
louvers.
The AV Engineering Data and Specifications
Manual AV-TS provides engineering sche-
matics, data, and information necessary for
initial tower layout and details the tower in
the form of specification language, providing
technical as well as common-sense informa-
tion on the importance of your specifica-
tions. Available on the web at spxcooling.
com or see your Marley sales representative
for a copy.
The Marley UPDATE™web-based application
software provides model selections perfectly
tuned to your cooling water system. Func-
tions include model selection, specifications,
model optimization, performance curves,
engineering data, and free cooling applica-
tions. Available to both registered customers
and guests at spxcooling.com.
If we can help in any way, feel free to call.
To find the Marley representative nearest
you call 1 800 462 7539 or check the web at
spxcooling.com.
7401 WEST 129 STREET
OVERLAND PARK, KANSAS 66213
UNITED STATES
913 664 7400
[email protected]
spxcooling.com
In the interest of technological progress,
all products are subject to design and/or
material change without notice.
©2008 SPX Cooling Technologies, Inc.
Printed in USA | AV-07A