Page 3 - Marley; MD; Cooling Tower; Table of Contents
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 Fil...
Page 4 - Water Distribution System; Pressurized spray system distributes water evenly over the fill; Structure; Triple-pass PVC inlet louvers—limits splash-out and; eliminate sunlight from entering the collection basin; Air Movement Package
Marley / MD Cooling Tower / 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 cleanin...
Page 6 - MOTOR; PLAN
Marley / MD Cooling Tower / 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 des...
Page 7 - NOTE; Use this bulletin for preliminary layouts only; UPDATE
Marley / MD Cooling Tower / 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 N...
Page 8 - INSTALLED; CL
Marley / MD Cooling Tower / Engineering Data : Schematic 8 H INSTALLED HEIGHT A 35 MOTOR CL PLAN SIDE ELEVATION END ELEVATION 8" INLET CL 569 2578 2371 2794 140 MD5008 MULTICELL Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The UPDATE w...
Page 14 - ACCESS
Marley / MD Cooling Tower / Engineering Data : Schematic 14 H A 3607 3651 35 8" INLET ACCESS CL PLAN SIDE ELEVATION END ELEVATION 153 MD5016 SINGLE CELL Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The UPDATE web-based selection softwa...
Page 22 - SUPPORTING STEEL; VIEW A
Marley / MD Cooling Tower / Engineering Data: Support 22 D E E CL ANCHOR BOLT CL ANCHOR BOLT OVERALL OF BASIN L C C L AN CHOR BOL T C L AN CHOR BOL T W OV ER ALL WIDTH OF B ASIN HOLES FOR M16 ANCHOR BOLTS 4 REQD 21 21 TOWER COLLECTION BASIN A SUPPORTING STEEL SINGLE CELL NORMAL GAUGE 21 SUPPORT BY O...
Page 23 - Use this bulletin for preliminary layouts only.
Marley / MD Cooling Tower / Engineering Data: Support 23 D F E E CL ANCHOR BOLT CL ANCHOR BOLT 21 21 OVERALL LENGTH OF BASIN CL ANCHOR BOLT CL ANCHOR BOLT C C L AN CHOR BOL T C L AN CHOR BOL T W OV ER ALL WIDTH OF B ASIN TOWER COLLECTION BASIN A HOLES FOR M16 ANCHOR BOLTS 4/CELL SUPPORTING STEEL MUL...
Page 25 - use of spreader bars is
Marley / MD Cooling Tower / Engineering Data : Hoisting 25 Model Base Module Top Module Width Sling Length Minimum Weight kg Width Sling Length Minimum Weight kg MD5008 2.6m 3m 1100 2.8m 3m 900 MD5010 2.6m 4m 1350 2.6m 3m 1050 MD5016 3.7m 4m 1650 3.7m 3m 1750 1 Hoisting operations can be dangerous a...
Page 26 - Marley Technical; Electric Basin Heaters
Marley / MD Cooling Tower / Engineering Data: Freeze Prevention 26 When the ambient air temperature falls below 0°C, the water in a cooling tower can freeze. Marley Technical Report #H-003 “Operating Cooling Towers in Freezing Weather” describes how to prevent freezing during operation. Available at...
Page 27 - Blowdown; CAUTION; Water Treatment
Marley / MD Cooling Tower / Engineering Data: Water Quality 27 The MD cooling tower can be a very effective air washer. Atmospheric dust able to pass through the relatively small louver openings will enter the recirculating water system. Increased concentrations can intensify systems maintenance by ...
Page 28 - Performance Warranty:
Specifications Specification Value Marley / MD Cooling Tower / Specifications: Base 28 1.0 Base: 1.1 Furnish and install an induced-draft, counterflow-type, factory assembled, film fill, industrial duty, cooling tower. Unit shall consist of _____ cell(s), as shown on plans. The limiting overall dime...
Page 29 - Mechanical Equipment
Specifications Specification Value Marley / MD Cooling Tower / Specifications: Base 29 4.0 Design Loading: 4.1 The tower and its components shall be designed to withstand a wind load of 1.44kPa. The cooling tower shall be de- signed to withstand shipping and hoist- ing loads of 2g horizontal or 3g v...
Page 31 - Hot Water Distribution System:
Specifications Specification Value Marley / MD Cooling Tower / Specifications: Base 31 7.0 Fill, Louvers and Drift Eliminators: 7.1 Fill shall be cross-corrugated, counterflow film type, thermoformed from 0.40mm thick PVC. Fill shall be assembled into packs for ease of removal and cleaning. Fill sha...
Page 32 - Cold Water Collection Basin; may be supplied to accommodate a variety of piping schemes. Unless
Specifications Specification Value Marley / MD Cooling Tower / Specifications: Base 32 10.0 Access: 10.1 A large rectangular access door shall be located in the plenum on the motor side of the tower. 11.0 Cold Water Collection Basin : 11.1 The collection basin shall be heavy- gauge galvanized steel ...
Page 33 - Specifications; Specification Value; Stainless Steel Options; Replace paragraph 11.1 with the; All Stainless Cooling Tower; Replace paragraph 5.1 with the
Specifications Marley / MD Cooling Tower / Specifications: Options 33 Specification Value Stainless Steel Options Stainless Steel Collection Basin: 11.1 Replace paragraph 11.1 with the following: The collection basin shall be heavy-gauge Series 300 stainless steel. Only low-carbon stainless steel al...
Page 34 - Convenience and Safety Options; Add the following paragraph in
Specifications Marley / MD Cooling Tower / Specifications: Options 34 Specification Value Convenience and Safety Options Mechanical Access Platform: 10.2 Add the following paragraph in the Access section: There shall be a mechanical access platform at the mechanical access door allowing access to th...
Page 35 - Control Options; Fan Motor Starter Control Panel:
Specifications Marley / MD Cooling Tower / Specifications: Options 35 Specification Value Control Options Fan Motor Starter Control Panel: 6.4 Add the following paragraph in the Mechanical Equipment sec- tion: Each cell of the cooling tower shall be equipped with a UL listed control system in a IP52...
Page 36 - Vibration Limit Switch:; Submerged in basin water, in which zinc ions are present, copper
Specifications Marley / MD Cooling Tower / Specifications: Options 36 Specification Value Vibration Limit Switch: 6.5 Add the following paragraph in the Mechanical Equipment section: A single-pole, double-throw vibration limit switch in a NEMA 4 housing shall be installed on the mechanical equipment...
Page 37 - Add the following paragraph in the
Specifications Marley / MD Cooling Tower / Specifications: Options 37 Specification Value of utility voltage to the motor. Automatic bypass with an earth ground condition is not allowed. The bypass contactor shall be cycled on and off while operating in bypass, to maintain the set-point temperature ...
Page 38 - Miscellaneous Options; Add the following paragraph under; Premium Efficiency Motor
Specifications Marley / MD Cooling Tower / Specifications: Options 38 Specification Value start and stop control, bypass/VFD selec- tion, Auto/Manual selections, manual speed control. To prevent heating prob- lems in the cooling tower fan motor and to assure proper gear reducer lubrication the VFD s...
Page 39 - Sound Control
Specifications Marley / MD Cooling Tower / Specifications: Options 39 Specification Value ■ Sound produced by a standard MD tower operating in an unob- structed environment will meet all but the most restrictive noise limitations—and will react favorably to natural attenuation. Where the tower has b...
