SPX Cooling Technologies Evaporative Air Cooler FSIG-TS-08A, Engineering Data

Page 1: ... Marley Sigma F Series CoolingTower Engineering Data Specifications ...

Page 2: ...Basin Options Stainless Steel Cold Water Basin 20 Watertight Partition betweenTower Cells 20 Basin Heater 20 Convenience and Safety Options Fiberglass Stairway 21 Wood Stairway 21 Plenum Walkway 22 Ladder Extension 22 Ladder Safety Cage 22 Hot Water Basin Covers 22 Air Inlet Screens 23 Appearance Options Architectural Casing 23 Cased Guardrail 23 Control Options Control System 24 Variable Speed Dr...

Page 3: ...mments on the meaning of the subject matter and explains its value Pages 12 through 19 indicate those paragraphs which will result in the purchase of a cooling tower which will not only accomplish the specified thermal performance but which will include normal operation and maintenance enhancing accessories and features It will also incorporate those standard materials which testing and experience...

Page 4: ...sin Tower installations with an elevation 20 0 or more from the top of the fan deck to grade or roof level require a safety cage on the tower ladder in compliance with OSHA standards Marley ladder safety cages are available as an option Use this data for preliminary layouts only Obtain current drawing from your Marley sales representative The UPDATE web based selection software available at spxcoo...

Page 5: ...porting steel complete with 13 16 diameter holes for anchor bolts to suit the general dimensions of current Marley drawings 4 Last number of model indicates number of cells Change as ap propriate for your selection Primary engineering data is per cell 5 Maintain no less than 2 0 of clear space at tower endwalls for construction purposes Louvered faces must have unobstruct ed air supply If obstruct...

Page 6: ...Marley drawings 4 Last number of model indicates number of cells Change as ap propriate for your selection Primary engineering data is per cell 5 All anchor bolts complete with nut and washer will be furnished by others Bolts are 3 4 diameter with 11 2 all thread projection Material should be stainless steel 6 Maintain no less than 2 0 of clear space at tower endwalls for construction purposes Lou...

Page 7: ...er is static lift E Actual pumping head will vary according to tower circulating GPM Total pumping head will be furnished at time of proposal 3 If your application requires a bypass system recommended location is through the tower endwall into the plenum area Review of the system by SPX engineering is required 4 All header and riser piping to be furnished by others A corrosion resistant material o...

Page 8: ...SIN OPTION End Elevation H E G FAN 10 1 8 BASE OF TOWER COLUMNS RISER C L C L C L FACE OF A DIA GALVANIZED FLANGE FLANGE IS 3 4 THICK BOLT CIRCLE CONFORMS TO 125 LB ANSI SPECIFICATIONS Side Elevation Tower Model Flow Cell GPM Dimensions A B C D E F G H F1210 1050 5750 12 10 8 0 16 0 15 03 4 3 3 1 77 8 2 6 F1220 1050 5750 14 12 8 0 16 0 15 13 4 3 6 1 77 8 2 6 F1230 1320 7200 14 12 10 0 20 0 15 13 4...

Page 9: ...ION End Elevation Side Elevation NOTE 1 Use this bulletin for preliminary layouts only Obtain current drawings from your Marley representative 2 Pumping head contributed by the tower is static lift E Actual pumping head will vary according to tower circulating GPM Total pumping head will be furnished at time of proposal 3 If your application requires a bypass system recommended location is through...

Page 10: ...imiting the number of motor starts on the other hand can produce significant variations in the temperature of the water delivered to the process Increased flexibility can simplify your operating procedures and save you money in the long run both on operation and on maintenance Here are two of the more popular options Two Speed Motors Two speed motors improve operating flexibility by increas ing th...

Page 11: ... adapt well to enclosures the designer must realize the potential impact of a poorly arranged enclosure on the tower s performance and operation The designer must take care to provide generous air inlet paths and the tower s fan cylinder discharge height should not be lower than the elevation of the top of the enclosure Obtain a copy of Marley Technical Report H 004 External Influences on Cool ing...

Page 12: ...r attention on a cooling tower selection that fits your space allotment and whose power usage is accept able Limitations on physical size and total operating horsepower avoid the introduction of unforeseen operational and site related influences Specifying the number of cells and the maximum fan hp cell will work to your advantage Your reason for specifying a crossflow type is that crossflow tow e...

Page 13: ...rchase is incapable of performing as specified then you will not have received full value for your money Bear in mind that the size and cost of a cooling tower var ies directly with its true thermal capability This paragraph is intended to protect you against either intentional or inadvertent undersizing of the tower by the manufacturer Judging the level of performance of a cooling tower on critic...

Page 14: ...ade with 1 2 diameter or larger series 300 stainless steel machine bolts Critical framing joints shall be augmented with 1 06 OD heavy wall fiberglass sleeves to transmit loads 3 6 No field gluing of joints or any other structural member will be allowed The limiting water quality values indicated are those which are acceptable for the normal materials of construction specified If water of more agg...

Page 15: ... steel dynamically bal anced driveshaft with heavy galvanized yokes and neoprene flexible coupling elements The indicated design values for framing and decking not only give you assurance that the tower can withstand long term operation in a hostile environment but that it will accept many years of inspection and maintenance traffic by your operating personnel Fiberglass reinforced polyester fan c...

Page 16: ...in the Geareducer Fans of the size used on large cool ing towers are applied at speeds and horsepowers that generate consider able torque and structural tubular steel resists this torque very effectively The Marley torque tube design assures that all of the mechanical equipment remains aligned and that the rotating fan is properly positioned within the fan cylinder Hot dip galvanizing after fabric...

Page 17: ...sing ends at tower corners shall be covered with pultruded FRP angles 8 2 In the water washed endwall fill areas inner casings of 16 gauge 304 stain less steel shall also be provided Gravity flow distribution basins are a feature of crossflow type towers These basins are out where they can be easily inspect ed even cleaned while the tower is in operation Spray sys tems of counterflow towers being ...

Page 18: ...for entry into the cold water basin Rectangular panels are shall be provided for access to the fan plenum area to facilitate inspection and allow maintenance to the fan drive system 10 2 Concrete partitions if required between cells in the cold water basin shall be installed in accordance with manufacturer s drawings Tower installer shall seal between tower cell partitions and basin cell partition...

Page 19: ...supports provided by others Unless otherwise specified all supply and return piping pumps con trols and electrical wiring will be out side the cooling tower manufacturer s scope of work Please be clear in your specifications and inquiry documents regarding the full scope of work expected That will help assure that your bid comparisons will be made on as equal a basis as possible and will help to a...

Page 20: ...ee flow of water between cells Weirs shall be equipped with bolt on gasketed cover plates to prevent water passage when required Basin Heater 10 3 Add the following paragraph in the Cold Water Basin section Add the following paragraph in the Cold Water Basin section Provide a system of electric immersion heaters and con trols to prevent freezing of water in the collection basin during periods of s...

Page 21: ...ion shall be by others designed in accordance with drawings provided by the cooling tower manu facturer The stairway shall conform to OSHA standards Wood Stairway 9 3 Replace paragraph 9 3 with the fol lowing A 30 762 mm wide column supported 45 stairway with 8 rise and run of treated Douglas Fir shall be provided at the tower endwall ris ing from grade roof to the fan deck Stair columns shall be ...

Page 22: ...s 7 4 Add the following paragraph in the Hot Water Distribution System section The distribution basins shall include stainless steel covers These covers shall be designed to withstand 40 psf 1 92 kPa live load and shall be easily removable for maintenance This option permits freedom of movement for inspection or main tenance within the tower without the need for wading boots or tower drainage It a...

Page 23: ...ultruded fiberglass angles Cased Guardrail 8 1 Add the following to the end of this paragraph The casing and cor ner treatment shall extend to the full height of the guardrail described in paragraph 9 2 The additional wind loading imposed by this exposure shall be accounted for in the tower s struc tural design In wooded or windy areas these screens help to keep leaves or blowing debris out of the...

Page 24: ...tch and for access to extra 120VAC 50VA control power overload trip alarms and remote temperature control devices The temperature controller shall be adjustable for the required cold water temperature If a thermostatic controller is used it shall be mounted on the side of the tower with the tem perature sensing bulb installed in the cold water basin using a suspension mounting bracket If a solid s...

Page 25: ...e drive s panel display shall be able to display the set point temperature and cold fluid temperature on two separate lines The bypass shall include a complete magnetic bypass circuit and with capabil ity 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 c...

Page 26: ...hout tripping The panel shall include a main disconnect with short circuit protection and external operating handle lockable in the off posi tion for safety The system shall include a solid state PI temperature controller to adjust frequency output of the drive in response to the tower fluid tempera ture The temperature of the fluid and set point shall be displayed on the door of the control panel...

Page 27: ... logic with auto canceling and adjustable time Speed in De Ice mode shall not exceed 50 motor speed The fluid cooler manufacturer shall supply VFD start up assistance Tower vibration testing throughout the speed range is required to identify and lockout any natural frequency vibration levels which may exceed CTI guidelines Vibration Limit Switch 5 5 Add the following paragraph in the Mechanical Eq...

Page 28: ...ad Premium Hardware This option is for those customers who either prefer fiberglass ladders or whose atmospheric conditions at the cooling tower location dictate its use Sound produced by a Sigma tower operating in an unobstructed environment will meet all but the most restrictive noise limita tions Where sound levels may be considered critical however low noise levels can be achieved by any of se...

Page 29: ...Specifications Marley Sigma F Series CoolingTower Specifications Options 29 Specification Value ...

Page 30: ...6213 UNITED STATES 913 664 7400 spxcooling ct 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 FSIG TS 08A ...