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Related Manuals for SPX Cooling Technologies Marley Sigma Marley Sigma Steel
Summary of Contents for SPX Cooling Technologies Marley Sigma Marley Sigma Steel
- Page 1 Marley Sigma Steel Cooling Tower Engineering Data & Specifications...
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Page 3: Table Of Contents
Marley Sigma Steel Cooling Tower Engineering Data Schematic Support Concrete Basin Piping Environmental Energy Management Specifications / Base Base Thermal Performance Construction Fan Deck and Fan Cylinder Mechanical Equipment Fill, Louvers and Drift Eliminators Hot Water Distribution System Casing Access Cold Water Collection Basin Scope of Work Specifications / Options... - Page 5 Space does not permit definition and explanation of all of the possible options that can be applied to the Sigma Steel. SPX Cooling Technologies realizes that you, the purchaser, must be happy with the tower's characteristics, and we are prepared to provide—or provide for—any reasonable enhancement that you...
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Page 6: Schematic
Marley Sigma Steel COLUMN " 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 Sigma Steel model recommendations based on customer's specific design requirements. Tower per cell Model 121-111 500-4500... -
Page 7: Support
Marley Sigma Steel 6" Tower Model 121-111 122-111 123-111 124-111 125-111 126-111 127-111 NOTE 1 Use this bulletin for preliminary layouts only. Obtain cur- rent drawings from your Marley sales representative. 2 Steel beams must include ⁄ " dia. holes to accept anchor bolts provided with tower. -
Page 8: Concrete Basin
Marley Sigma Steel 6" MIN. SUMP Tower Model 121-111 122-111 123-111 124-111 125-111 126-111 127-111 NOTE 1 Use this bulletin for preliminary layouts only. Do not use for construction. Obtain current drawings from your Marley sales representative. Concrete basin design and construction are by other contractors or purchaser. -
Page 9: Piping
Marley Sigma Steel TYP. SINGLE CELL COLUMN AND ANCHOR BOLT DIA FLOW CONTROL VALVE Tower Model per cell 500-3800 121-111 3801-4500 122-111 650-6000 123-111 650-6000 1000-6000 124-111 6001-7500 125-111 1000-7500 126-111 1000-9000 127-111 1500-10500 NOTE 1 Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative. -
Page 10: Environmental
Marley Sigma Steel Sound Control Sound produced by a Sigma Steel tower operating in an un- obstructed environment will meet all but the most restrictive noise limitations—and will react favorably to natural attenu- ation. Where the tower has been sized to operate within an enclosure, the enclosure itself will have a damping effect on sound. -
Page 11: Energy Management
Marley Sigma Steel Cooling Tower Cooling towers are usually selected to produce a specific cold water temperature at the higher summertime wet-bulb temperatures. During the remainder of the year, the cooling tower is capable of producing much colder water. Unless your system will benefit from the coldest possible water tempera- ture, you should consider controlling cold water tempera- tures to higher levels. -
Page 12: Specifications: Base
Marley Sigma Steel Specifications Base: 1.1 Furnish and install an induced-draft, crossflow-type, field-erected, steel- framed, PVC-fill, industrial-duty cooling tower of _____ cell(s), as shown on Plans. The limiting overall dimensions of the tower shall be _____ wide, _____ long, and _____ high to the top of the fan cylinder. -
Page 13: Thermal Performance
Marley Sigma Steel Specifications Thermal Performance: The tower shall be capable of cooling _____ GPM of water from ____ °F to _____ °F at a design entering air wet- bulb temperature of _____ °F . The cool- ing tower manufacturer shall guarantee that the tower supplied will meet the specified performance conditions when the tower is installed according to plans. The purchaser will arrange for an on-site thermal performance test, to be conducted in the presence of the... -
Page 14: Construction
Marley Sigma Steel Specifications Construction: The tower shall be capable of with- standing water having a pH of 6.5 to 8.0; a chloride content (NaCl) up to 300 ppm; a sulfate content (SO 4 ) up to 250 ppm; a calcium content (CaCO 3 ) up to 500 ppm;... -
Page 15: Fan Deck And Fan Cylinder
Marley Sigma Steel Specifications Fan Deck and Fan Cylinder: The fan deck shall act as a working platform for maintenance personnel. It shall be fabricated of no less than 12 gauge steel, and shall be designed for a uniform live load of 60 psf. 4.2 Fan cylinders shall be molded FRP . - Page 16 ■ Except for the motor, all of the mechanical equipment on a Marley tower is made by SPX Cooling Technologies. Cooling tower vendors who purchase commercial fans, gear boxes, driveshafts, etc. may require that you deal directly with those commercial suppliers for war-...
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Page 17: Fill, Louvers And Drift Eliminators
Marley Sigma Steel Specifications Fill, Louvers and Drift Eliminators: 6.1 Fill shall be film-type, 15 mil thick, thermoformed PVC, with louvers formed as part of each fill sheet. Fill shall be suspended from stainless steel structural tubing supported from the upper tower structure, and shall be elevated above the floor of the cold water basin to facilitate cleaning. -
Page 18: Hot Water Distribution System
Marley Sigma Steel Specifications Hot Water Distribution System: The mechanical equipment support/ crossover pipe shall deliver water to two open hot water basins per cell at the fan deck elevation. Water shall exit these basins to the fill by gravity through metering orifice-type polypro- pylene nozzles situated in the basin floor. -
Page 19: Cold Water Collection Basin
Marley Sigma Steel Specifications The top of the tower shall be equipped with a sturdy 42" high guardrail sys- tem, complete with top rails, interme- diate rails and toeboards, conforming to OSHA standards. Guardrails and posts shall consist of 1.66" O.D. x 15 gauge galvanized structural tubing. -
Page 20: Specifications: Options
Marley Sigma Steel Specifications Control Options Control System: 5.7: Add the following paragraph in the Mechanical Equipment section: Each cell of the cooling tower shall be equipped with a UL listed control system in a NEMA 3R or 4X outdoor enclosure capable of controlling single-speed or two-speed motors as required, and designed specifi-... -
Page 21: Basin Heater
Marley Sigma Steel Specifications Basin Heaters: 10.2 Add the following paragraph in the Cold Water Basin section: Provide a system of electric immersion heaters and controls for each cell of the tower to prevent freezing of water in the collection basin during periods of shut- down. -
Page 22: Marley Premium Vfd System
Marley Sigma Steel Specifications temperature and cold-fluid temperature on two separate lines. The bypass shall include a complete magnetic bypass circuit and with capability to isolate the VFD when in the bypass mode. Transfer to the bypass mode shall be manual in the event of VFD failure. Once the motor is transferred to the by-pass circuit the fan motor will run at constant full speed. -
Page 23: Vibration Limit Switch
Marley Sigma Steel Specifications circuit with capability to isolate the VFD when in the bypass mode. Transfer to the bypass mode shall be automatic in the event of VFD failure or for specific trip conditions allowing safe transfer 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 operat- ing in bypass, to maintain the set-point temperature of the cold water. -
Page 24: Convenience And Safety Options Stairway
Marley Sigma Steel Specifications Convenience and Safety Options Stairway: Replace paragraph 9.3 with the fol- lowing: A 30" wide, 45° steel stairway with 8" rise and run, shall be provided at the tower endwall rising from grade (roof) to the fan deck elevation. Stair treads shall be bar grating with checker plate nosing, and shall be through bolted to structural channel string-... -
Page 25: Oil Level Sight Glass
Marley Sigma Steel Specifications Oil Level Sight Glass: Replace paragraph 5.4 with the fol- lowing: A galvanized oil gauge and drain line shall extend from the gear reducer to the vicinity of the motor, and shall be equipped with a bronze- bodied oil level sight glass. -
Page 26: Low Noise Tower
Marley Sigma Steel Specifications Low Noise Tower: Add the following at the end of this paragraph: The cooling tower shall be quiet operating, and shall produce an overall level of sound no higher than ____ dBA at the critical location indicated on the Plans. -
Page 27: Service Life-Relate Customization
Marley Sigma Steel Cooling Tower Specifications Service Life-Related Customization: Specifications: Options Specification Value Some adverse water conditions, unsatisfactory air quality, and/or pro- ■ cesses that produce corrosive contaminants, may dictate the use of stainless steel for materials of construction in the tower. Refer to our Stainless Steel Sigma Series, in which the use of stainless steel has been maximized. - Page 28 7401 WEST 129 STREET OVERLAND PARK, KANSAS 66213 UNITED STATES 913 664 7400 spxcooling@spx.com 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 | SSIG-TS-08A...