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.

Printed in USA | AV-07A

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