SPX Cooling Technologies Cooling Tower Marley MD User Manual

Marley MD Cooling Tower

Engineering Data & Speciﬁcations

Marley / MD Cooling Tower / 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 Cooling Tower

■ 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

■ 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

Marley / MD Cooling Tower

towers are galvanized steel, factory

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

assembled, counterflow cooling towers,

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 Cooling Tower / Engineering Data : Schematic

569

140

2578

2731

8" INLET MOTOR

PLAN

SIDE ELEVATION END ELEVATION

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.

MD5008 SINGLE CELL

Marley / MD Cooling Tower / Engineering Data : Schematic

165

MD5008 SINGLE CELL

Model

note 2

MD5008MAC1L

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

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

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

Nominal Tons

note 3

Motor

5.5 80

dBA

1.5m from air inlet face

Dimensions

H A Weight/Cell

3294 2181 3051 1702 891

3599 2486 3176 1828 936

3904 2791 3302 1953 1062

Design

Operating

Weight

Shipping Weight

Heaviest

Section

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 m

/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" M connection located on the side of the tower. A 3" M drain connection is located on the side of the collection basin.

dia.

Marley / MD Cooling Tower / Engineering Data : Schematic

INSTALLED

HEIGHT

MOTOR

PLAN

SIDE ELEVATION END ELEVATION

8" INLET

569

2578

2371

2794

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.

MD5008 MULTICELL

Marley / MD Cooling Tower / Engineering Data : Schematic

165

MD5008 MULTICELL

Model

note 2

MD5008MAC2L

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

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

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

Nominal Tons

note 3

Motor

5.5 80

dBA

1.5m from air inlet face

Dimensions

H A Weight/Cell

3526 2413 3072 1723 891

3831 2718 3197 1848 957

4136 3023 3323 1974 1083

Design

Operating

Weight

Shipping Weight

Heaviest

Section

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 m

/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.

Marley / MD Cooling Tower / Engineering Data : Schematic

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.

MD5010 SINGLE CELL

Marley / MD Cooling Tower / Engineering Data : Schematic

248

MD5010 SINGLE CELL

Model

note 2

MD5010PAC1L

MD5010PLC1L 249 11 80

MD5010QAC1L 269 15 81

MD5010QLC1L 270 15 80

MD5010RAC1L 286 18.5 81

MD5010RLC1L 289 18.5 80

MD5010PAD1L 279 11 81

MD5010PLD1L 280 11 80

MD5010QAD1L 304 15 81

MD5010QLD1L 305 15 80

MD5010RAD1L 325 18.5 81

MD5010RLD1L 329 18.5 80

MD5010PAF1L 293 11 81

MD5010PLF1L 294 11 80

MD5010QAF1L 317 15 81

MD5010QLF1L 318 15 80

MD5010RAF1L 341 18.5 81

MD5010RLF1L 346 18.5 80

MD5010SAF1L 360 22 81

MD5010SLF1L 362 22 81

Nominal Tons

note 3

Motor

11 81

dBA

1.5m from air inlet face

Dimensions

H A Weight/Cell

3412 2299 3883 2079 1052

3717 2604 4046 2242 1190

4021 2909 4234 2430 1353

Design

Operating

Weight

Shipping Weight

Heaviest

Section

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 m

/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" M connection located on the side of the tower. A 3" M drain connection is located on the side of the collection basin.

dia.

Marley / MD Cooling Tower / Engineering Data : Schematic

8" INLET

MOTOR

PLAN

SIDE ELEVATION END ELEVATION

569

2578

3651

3715

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.

MD5010 MULTICELL

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