SPX Cooling Technologies Cooling Tower Marley MD Guida alle dimensioni

/Marley MD Cooling Tower /

Engineering Data & Speciﬁcations

Marley /MD CoolingTower / Table of Contents

Engineering Data

Schematic 6

Support 22

Outlet Connection 24

Hoisting Info 25

Freeze Prevention 26

Water Quality 27

Specifications / Base

Base 28

Thermal Performance 28

Performance Warranty 28

Design Loading 29

Construction 29

Mechanical Equipment 29

Fill, Louvers and Drift Eliminators 31

Hot Water Distribution System 31

Casing and Fan Guard 31

Access 31

Collection Basin 32

Warranty 32

Specifications / Options

Stainless Steel Options

Stainless Steel Collection Basin 33

All Stainless Steel Cooling Tower 33

Convenience and Safety Options

Mechanical Access Platform 34

Ladder Extension 34

Ladder Safety Cage 34

Control Options

Fan Motor Starter Control Panel 35

Vibration Limit Switch 36

Basin Heater 36

Fan Motor Variable Speed Drive 36

Miscellaneous Options

Equalizer Flume Weir Gates 38

Premium Efficiency Motor 38

Sound Control 39

Marley /MD CoolingTower / 4

■ Water Distribution System

Pressurized spray system distributes water evenly over the ﬁll

Low-clog polypropylene nozzles—delivers precise distribution of water over the ﬁll area

Marley MC thermoformed PVC ﬁlm ﬁll assembled into packs for ease of removal and cleaning

Marley XCEL drift eliminators—limit drift losses to no more than .001% of the design GPM ﬂow rate

■ Structure

Induced-draft, counterﬂow design may require less plan area than crossﬂow towers typically use

Series 300 stainless steel, 316 stainless steel or heavy mill galvanized steel construction

Factory assembled—ensures ﬁnal ﬁeld installation will be hassle-free

Triple-pass PVC inlet louvers—limits splash-out and eliminate sunlight from entering the collection basin

■ Air Movement Package

High efﬁciency fan—wide-chord design for maximum efﬁciency at low fan tip speeds

Eased inlet fan cylinder—ensures full area, low turbulent airﬂow through the cylinder

Spherical roller bearings are rated at an L10 life of 100,000 hours

TEFC Fan Motor—1.15 service factor, variable torque, and specially insulated for cooling tower duty

The MD Series air movement package including the structural support—guaranteed against failure for a

period of ﬁve full years. The motor is warranted separately by the motor manufacturer

towers are galvanized steel, factory

assembled, counterflow cooling towers,

designed to serve air conditioning and refrigeration

systems as well as light to medium industrial process

loads on clean water. The Marley MD evolved from a

factory-assembled concept of towers pioneered by

Marley some 75 years ago, and incorporate all of the

design advancements that our customers have found

valuable. MD towers represent the current state of the

art in this cooling tower category.

The specifications portion of this publication not

only relates the language to use in describing an

appropriate MD cooling tower—but also deﬁnes why

certain items and features are important enough to

specify with the intention of insisting upon compliance

by all bidders. The left hand column of pages 28

through 39 provides appropriate text for the various

speciﬁcation paragraphs, whereas the right hand

Marley /MD CoolingTower / 5

column comments on the meaning of the subject

matter and explains its value.

Pages 33 through 39 indicate those paragraphs

which will result in the purchase of a basic cooling

tower—one that accomplishes the speciﬁed thermal

performance, but which will lack many operation—and

maintenance-enhancing accessories and features

that are usually desired by those persons who are

responsible for the continuing operation of the

system of which the cooling tower is part. It will also

incorporate those standard materials which testing and

experience has proven to provide acceptable longevity

in normal operating conditions.

Pages 33 through 39 provide paragraphs intended to

add those features, components, and materials that

will customize the cooling tower to meet the user‘s

requirements.

Marley /MD CoolingTower /Engineering Data : Schematic 6

Use this data for preliminary layouts only.

Obtain current drawing from your Marley sales

representative.

The UPDATE web-based selection software

—available at spxcooling.com—provides

MD model recommendations based on

customer's specific design requirements.

569

140

2578

2731 35

8" INLET MOTOR

PLAN

SIDE ELEVATION END ELEVATION

MD5008SINGLECELL

Marley /MD CoolingTower /Engineering Data : Schematic 7

NOTE

1 Use this bulletin for preliminary layouts only. Obtain

current drawings from your Marley sales representative. All

table data is per cell.

2 Last two characters of the model number indicate number of

cells and cell conﬁguration.

3 Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C

WB and .68 m3/hr per ton. The Marley UPDATE web-based

selection software provides MD model recommendations

based on speciﬁc design requirements.

4 Standard overﬂow is a 3" dia. M connection located on the

side of the collection basin. Makeup water connection is 2" dia.

M connection located on the side of the tower. A 3" M drain

connection is located on the side of the collection basin.

Model

note 2

Nominal Tons

note 3

Motor

dBA

1.5m from air

inlet face

Dimensions Design

Operating

Weight

Shipping Weight

H A Weight/Cell Heaviest

Section

MD5008MAC1L

165

5.5 80

3294 2181 3051 1702 891

MD5008MLC1L 163 5.5 79

MD5008NAC1L 179 7. 5 81

MD5008NLC1L 179 7. 5 79

MD5008PAC1L 202 11 81

MD5008PLC1L 202 11 80

MD5008QAC1L 216 15 81

MD5008QLC1L 216 15 80

MD5008MAD1L 180 5.5 80

3599 2486 3176 1828 936

MD5008MLD1L 177 5.5 79

MD5008NAD1L 197 7. 5 81

MD5008NLD1L 196 7. 5 79

MD5008PAD1L 223 11 81

MD5008PLD1L 223 11 80

MD5008QAD1L 239 15 81

MD5008QLD1L 238 15 80

MD5008MAF1L 189 5.5 80

3904 2791 3302 1953 1062

MD5008MLF1L 185 5.5 79

MD5008NAF1L 207 7. 5 81

MD5008NLF1L 206 7. 5 79

MD5008PAF1L 234 11 81

MD5008PLF1L 234 11 80

MD5008QAF1L 255 15 81

MD5008QLF1L 257 15 80

MD5008SINGLECELL

Marley /MD CoolingTower /Engineering Data : Schematic 8

INSTALLED

HEIGHT

MOTOR

PLAN

SIDE ELEVATION END ELEVATION

8" INLET

569

2578

2371

2794 140

MD5008MULTICELL

Use this data for preliminary layouts only.

Obtain current drawing from your Marley sales

representative.

The UPDATE web-based selection software

—available at spxcooling.com—provides

MD model recommendations based on

customer's specific design requirements.

Marley /MD CoolingTower /Engineering Data : Schematic 9

NOTE

1 Use this bulletin for preliminary layouts only. Obtain

current drawings from your Marley sales representative. All

table data is per cell.

2 Last two characters of the model number indicate number of

cells and cell conﬁguration. Change as appropriate for your

selection.

3 Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C

WB and .68 m3/hr per ton. The Marley UPDATE web-based

selection software provides MD model recommendations

based on speciﬁc design requirements.

4 Standard overﬂow is a 3" dia. M connection located on the

side of the collection basin. Makeup water connection is 2"

dia. M connection located on the side of the tower. A 3" M

drain connection is located on the side of the collection basin.

Model

note 2

Nominal Tons

note 3

Motor

dBA

1.5m from air

inlet face

Dimensions Design

Operating

Weight

Shipping Weight

H A Weight/Cell Heaviest

Section

MD5008MAC2L

165

5.5 80

3526 2413 3072 1723 891

MD5008MLC2L 165 5.5 79

MD5008NAC2L 179 7. 5 81

MD5008NLC2L 179 7. 5 79

MD5008PAC2L 202 11 81

MD5008PLC2L 202 11 80

MD5008QAC2L 217 15 81

MD5008QLC2L 217 15 80

MD5008MAD2L 180 5.5 80

3831 2718 3197 1848 957

MD5008MLD2L 180 5.5 79

MD5008NAD2L 196 7. 5 81

MD5008NLD2L 196 7. 5 79

MD5008PAD2L 222 11 81

MD5008PLD2L 222 11 80

MD5008QAD2L 239 15 81

MD5008QLD2L 239 15 80

MD5008MAF2L 188 5.5 80

4136 3023 3323 1974 1083

MD5008MLF2L 188 5.5 79

MD5008NAF2L 205 7. 5 81

MD5008NLF2L 205 7. 5 79

MD5008PAF2L 234 11 81

MD5008PLF2L 234 11 80

MD5008QAF2L 251 15 81

MD5008QLF2L 251 15 80

MD5008MULTICELL

Marley /MD CoolingTower /Engineering Data : Schematic 10

MD5010SINGLECELL

8" INLET MOTOR

PLAN

SIDE ELEVATION END ELEVATION

569

2578

3651

140

Use this data for preliminary layouts only.

Obtain current drawing from your Marley sales

representative.

The UPDATE web-based selection software

—available at spxcooling.com—provides

MD model recommendations based on

customer's specific design requirements.

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