Rigging and Installation Manual
Contents
1. 11 11 1 2 a ee 5 x 18 5 5 3 8 11 4 1 2 18 1 8 PEEeRGeeEEsERs i 8P x12 7 10 13 9 11 11 3 4 Eee nie aa 8P x 18 7 10 13 9 18 0 8P x 24 7 10 13 9 24 1 i End Elevation 8P x 36 710 13 9 36 2 1 4 10 x12 9 9 3 4 15 8 3 4 11 11 5 8 L A J 10 x 18 9 9 3 4 15 8 3 4 18 1 4 Plan View 10 x 24 9 9 3 4 15 8 3 4 24 3 4 Figure 1 Structural Steel Support 10 x 36 9 9 3 4 eae 36 1 7 8 Rigging Pan Fan Section U bolts or similar lifting points are located in the pan fan section for lifting and final positioning purposes as shown below in Figures 2 and 3 Units with lengths up to 18 have 4 total lift points Units with lengths of 24 and 36 have either 6 or 8 lift points NOTE Use all of the U bolts or lift points provided for lifting LIFTING EARS LIFTING 4 TOTAL U BOLTS gt ANGLE WITH ANGLE WITH HORIZONTAL HORIZONTAL MUST MUST EXCEED 60 EXCEED 60 Figure 2 Pan Fan Section Figure 3 Pan Fan Section up to 18 Long 24 and 36 Long 6 lift points shown LS Series Cooling Towers g always be used between the cables at the top of the section to prevent damage to the upper flanges NOTE The U bolts or other safety slings and spreader bars should be provided under the sections as shown lifting points should be used for final positioning only and for lifting where no danger exists If they are used for extended2. The recommended method for extended lifts is to use slings under the unit as shown in Figures 4 and 5 Spreader bars should lifts Ooa A Z 2 j annn N ES AANA AAA ae w g A AN I c Oua B CcC oS S l ll all 1 10 to oO HS Ex Ql D cu 0 cn Tw pc xs 6 8 a an z oo te t D o C O ga nE z oa a a pes lo E amp o toal y o D EE x x x x x x x Ta 2 ay Slalalalojojolo EX 8 aN E o o S250 iL wos N w DTZ zZ qr u dimensions for rigging the pan fan assembly for both standard and extended lifts Table 2 Minimum H Dimension for Pan Fan Rigging T c a Ss lt oD J E E EE rere es EX H C bolio o o ce Fee Se a id S UL Ca a Oo fe CO R Bs T p2 E o2 z x E l ta E n N be e had N lt o AFIPREBENEE o 2 x x x T3 S 2 53 x x x x EE s Ojala a a Zha D o S LO to amp Olg LL WUN u LL aN oT O z lt I w las 0 D op LS Series Cooling Towers fevapce Applying Sealer Tape Once the bottom section has been set on the supporting steel and bolted in place wipe the top flanges to remove any dirt or moisture Place sealer tape over the mounting hole centerline on the side flanges Apply two strips of sealer tape one partially overlapping the other on
3. Mr GoodTower Rigging and LS SERIES FORCED DRAFT EVAPORATIVE COOLING TOWERS Bulletin 121D Installation Manual For EVAPCO Authorized Parts and Service Contact Your Local EVAPCO Representative or the Local Mr GoodTower Service Provider EVAPCO Inc World Headquarters amp Research Development Center EVAPCO Inc P O Box 1300 Westminster MD 21158 USA PHONE 410 756 2600 Fax 410 756 6450 E MAIL marketing evapco com EVAPCO North America EVAPCO Inc World Headquarters P O Box 1300 Westminster MD 21158 USA Phone 410 756 2600 Fax 410 756 6450 E mail marketing evapco com EVAPCO East 5151 Allendale Lane Taneytown MD 21787 USA Phone 410 756 2600 Fax 410 756 6450 E mail marketing evapco com EVAPCO Midwest 1723 York Road Greenup IL 62428 USA Phone 217 923 3431 Fax 217 923 3300 E mail evapcomw evapcomw com EVAPCO West 1900 West Almond Avenue Madera CA 93637 USA Phone 559 673 2207 Fax 559 673 2378 E mail contact evapcowest com EVAPCO lowa 925 Quality Drive Lake View IA 51450 USA Phone 712 657 3223 Fax 712 657 3226 EVAPCO lowa Sales amp Engineering 215 1st Street NE P O Box 88 Medford MN 55049 USA Phone 507 446 8005 Fax 507 446 8239 E mail evapcomn evapcomn com Refrigeration Valves amp Systems Corporation A wholly owned subsidiary of EVAPCO Inc 1520 Crosswind Dr Bryan TX 77808 USA Phone 979 778 0095 Fax 979
4. 4 x 9 10 8P x 24 15 4 x 12 15 8P x 36 19 4 x 18 19 10 x 12 15 5 x 12 15 10 x 18 19 5 x 18 19 10 x 24 15 8P x 12 15 10 x 36 19 LS Series Cooling Towers fevapce Optional Tapered or Straight Sided Hood Section Some Units may be supplied with an optional discharge hood section This section will ship from the factory as a separate item or mounted on top of either the pan fan section or fill section to reduce freight charges Each hood section is equipped with U bolts located at the four corners for lifting and final positioning Figure 15 Always use safety slings for extended lifts or where any hazard exists NOTE When combined with other sections the hood must be removed prior to any lift In all cases the hood section must be rigged as a separate part Once the fill section has been secured to the pan fan section wipe the top flanges to remove any dirt or moisture Place sealer tape over the mounting hole centerline on the side flanges Apply two strips of sealer tape one partially overlapping the other on the end flanges as shown in Figures 6 and 7 Remove any shipping blocks or other obstructions Lower the hood onto the top flange of the fill section Install the fasteners in all four corners as shown in Figure 15 For 18 foot long hoods two additional fasteners are provided and are to be fastened in the middle of each side NOTE Always lift the hood separately and follow the rigging seque
5. IOI Business Park 2 F Unit 20 Persiaran Puchong Jaya Selatan Bandar Puchong Jaya 47170 Puchong Selangor Malaysia Phone 60 3 8070 7255 Fax 60 3 8070 5731 E mail marketing ap evaptech com Visit EVAPCO s Website at http www evapco com Espa LS Series Cooling Towers Method of Shipment Forced draft units are shipped either fully assembled small units or with the top section s separate from the bottom section s These sections have mating flanges and will join together in a waterproof joint when sealed and bolted together as described in the following instructions Miscellaneous items such as sealer fasteners and any other required materials are packaged and placed inside the pan for shipment NOTE All casing sections are factory inspected prior to shipment to verify proper fit for rigging Please take extra care to handle and rig unit section per the instructions of this manual to avoid possible distortion and poor casing alignment It is advisable to check each section upon receipt and during each lift to ensure that the factory alignment has not been altered Should the field inspection indicate the section alignment square has been altered please contact the factory or your local EVAPCO representative for additional instructions to obtain proper section fit Storage Do not place tarps or other coverings over the top of the units if the units are to be stored before installation Excessive heat can build
6. Small Fill Section Figure 9 Large Fill Section LIFT POINT The recommended method for extended lifts is to use slings under the unit as shown in Figures 10 and 11 Spreader bars should always be used between the cables at the top of the section to prevent damage to the upper flanges NOTE The U bolts or other lifting points should be used for final positioning only and for lifting where no danger exists If they are used for extended lifts safety slings and spreader bars should be provided under the sections as shown ANGLE WITH HORIZONTAL MUST EXCEED 60 Figure 10 Extended Lift Small Fill Section LIFT POINT LX exe SPREADEI Figure 11 Extended Lift Large Fill Section LS Series Cooling Towers fevapce See Table 3 for the minimum H dimensions for rigging the fill section for both standard and extended lifts Table 3 Minimum H Dimension for Fill Section Rigging Unit Minimum Footprint H 4 x6 4 x9 4 x 12 4 x 18 5 x 12 5 x 18 8P x 12 8P x 18 8P x 24 8P x 36 10 x 12 10 x 18 10 x 24 10 x 36 Assembly of the Fill Section to the Pan Fan Section Before assembling the fill section to the pan fan section remove any loose parts shipped in the pan On small centrifugal fan units the fan motor guard is normally shipped in the basin to avoid damage It should be attached to the uni
7. up if the units are covered causing possible damage to the PVC eliminators and fill For extended storage beyond six months rotate the fan and fan motor shaft s monthly Also the fan shaft bearings should be purged and re greased prior to start up General For extended lifts or where hazards may exist it is recommended that safety slings and spreaders be employed for safety Refer to the extended lift information in this bulletin International Building Code Provisions The International Building Code IBC is a comprehensive set of regulations addressing the structural design and installation requirements for building systems including HVAC and industrial refrigeration equipment As of June 2008 all 50 states plus Washington D C have adopted the International Building Code The code provisions require that evaporative cooling equipment and all other components permanently installed on a structure must meet the same seismic design criteria as the building The LS Series Cooling Towers are IBC 2006 compliant up to 1 0g 145 psf wind load with standard construction and up to 5 12g 145 psf wind load with additional structural modifications All items attached to the Evapco LS Cooling Tower must be independently reviewed and isolated to meet applicable wind and seismic loads This includes piping ductwork conduit and electrical connections These items must be flexibly attached to the Evapco unit so as not to transmit additional loads to the e
8. 10 Unit Accessory Shipping Location Unit Accessories Shipping Location Aluminum Ladder Shipping Location is Unit and Accessory Dependent If Space is Available Strapped Inside Unit Basin If No Space is Available Shipped Separately on Truck Bed Discharge Attenuation Shipping Location is Unit Dependent 4 Wide Units Shipped Separately on Truck Bed 8 Wide Units and Larger Mounted Loosely Bolted on Basin Discharge Hood with Dampers Shipping Location is Unit Dependent 4 Wide Units Shipped Separately on Truck Bed 8 Wide Units and Larger Mounted Loosely Bolted on Basin Electric Basin Heater Shipping Location is Unit Dependent End Mounted Heater Installed in Unit Basin Side Mounted Heater Strapped Inside Unit Basin Electric Basin Heater Control Panel Shipping Location is Dependent on Control Panel Size If Space is Available Mounted on Unit Basin If No Space is Available Boxed Wrapped and Wire Tied Inside Unit Basin Electric Basin Heater Low Water Cutout Shipped in Rigging Box Strapped Inside Unit Basin Electric Basin Heater Thermostat Shipping Location is Unit Dependent End Mounted Thermostat Mounted on Unit Basin Side Mounted Thermostat Shipped in Rigging Box Electronic Water Level Control Probes Mounted in PVC standpipe Electronic Water Level Control PVC Standpipe Strapped Inside Unit Basin External Service Platform with Ladder Shipp
9. 778 0030 E mail rvs rvscorp com McCormack Coil Company Inc A wholly owned subsidiary of EVAPCO Inc P O Box 1727 6333 S W Lakeview Boulevard Lake Oswego OR 97035 USA Phone 503 639 2137 Fax 503 639 1800 E mail mail mmccoil com EvapTech Inc A wholly owned subsidiary of EVAPCO Inc 8331 Nieman Road Lenexa KS 66214 USA Phone 913 322 5165 Fax 913 322 5166 E mail marketing evaptech com Tower Components Inc A wholly owned subsidiary of EVAPCO Inc 5960 US HWY 64E Ramseur NC 27316 Phone 336 824 2102 Fax 336 824 2190 E mail mail towercomponentsinc com EVAPCO Newton 701 East Jourdan Street Newton IL 62448 USA Phone 618 783 3433 Fax 618 783 3499 E mail evapcomw evapcomw com EVAPCO SPECIALISTS IN HEAT TRANSFER PRODUCTS AND SERVICES EVAPCO Europe EVAPCO Europe N V European Headquarters Industrieterrein Oost 4010 3700 Tongeren Belgium Phone 32 12 395029 Fax 32 12 238527 E mail evapco europe evapco be EVAPCO Europe S r l Via Ciro Menotti 10 l 20017 Passirana di Rho Milan Italy Phone 39 02 939 9041 Fax 39 02 935 00840 E mail evapcoeurope evapco it EVAPCO Europe S r l Via Dosso 2 23020 Piateda Sondrio Italy EVAPCO Europe GmbH Bovert 22 D 40670 Meerbusch Germany Phone 49 2159 69560 Fax 49 2159 695611 E mail info evapco de Flex coil a s A wholly owned subsidiary of EVAPCO Inc Knosgardvej 115 DK 9440 Aabybro Denm
10. ark Phone 45 9824 4999 Fax 45 9824 4990 E mail info flexcoil dk EVAPCO S A Pty Ltd A licensed manufacturer of EVAPCO Inc 18 Quality Road Isando 1600 Republic of South Africa Phone 27 11 392 6630 Fax 27 11 392 6615 E mail evapco evapco co za Evap Egypt Engineering Industries Co A licensed manufacturer of EVAPCO Inc 5 El Nasr Road Nasr City Cairo Egypt Phone 2 02 24022866 2 02 24044997 Fax 2 02 24044667 2 02 24044668 E mail Primacool link net Shady primacool net EVAPCO Asia Pacific EVAPCO Asia Pacific Headquarters 1159 Luoning Rd Baoshan Industrial Zone Shanghai P R China Postal Code 200949 Phone 86 21 6687 7786 Fax 86 21 6687 7008 E mail marketing evapcochina com EVAPCO Shanghai Refrigeration Equipment Co Ltd 1159 Louning Rd Baoshan Industrial Zone Shanghai P R China Postal Code 200949 Phone 86 21 6687 7786 Fax 86 21 6687 7008 E mail marketing evapcochina com Beijing EVAPCO Refrigeration Equipment Co Ltd Yan Qi Industrial Development District Huai Rou County Beijing P R China Postal Code 101407 Phone 86 10 6166 7238 Fax 86 10 6166 7395 E mail evapcobj evapcochina com EVAPCO Australia Pty Ltd 34 42 Melbourne Road P O Box 436 Riverstone N S W Australia 2765 Phone 61 2 9627 3322 Fax 61 2 9627 1715 E mail sales evapco com au EvapTech Asia Pacific Sdn Bhd A wholly owned subsidiary of EvapTech Inc
11. e lifting hole A provided in the motor base Lift the motor motor base assembly and align holes B to B1 and C to C1 Insert the 1 2 inch diameter pivot bolts with flat washer D Install flat washer nut and jam nut E on the pivot bolt DO NOT OVERTIGHTEN Insert the J bolts F into holes G Install flat washers and cotter pins H Place nuts lock washers and flat washers J on the threaded portion of J bolts Their final location will be behind the motor base installed next Insert the J bolts into the holes K in the motor base Install flat washers lock washers and nuts L Remove the lifting device from the motor base and position motor base toward the unit for belt installation Install the belts M around the fan sheave and motor sheave Figure 20 Tighten belts by adjusting nuts on J bolts Do not over tension the belts When the belts are properly adjusted the deflection at the center of the belt should be approximately 1 2 with moderate hand pressure Measure the distance from the motor base to the J bolt mounting angles to ensure that both sides of the base are located the same distance from the unit This should ensure that the sheaves are properly aligned since they were pre set at the factory As a final check lay a straight edge from sheave to sheave Figure 21 There should be 4 point contact Adjust the position of the motor sheave if necessary To install the motor guard N line up the holes and fasten with the self tapping scr
12. ews P Figure 20 Check to ensure that the motor guard does not make contact with the drive sheave or belts Figure 19 Motor Installation 3 4 N gt MOTOR 7 SHEAVE FAN SHEAVE ADJUST POSITION OF MOTOR SHEAVE only if necessary Figure 20 Motor Guard and Powerband Belt Installation Figure 21 Sheave Alignment Check 12 LS Series Cooling Towers fevapoe Final Assembly and Start up Details Shipping Materials Remove any wood chocks spare parts or miscellaneous items that have been placed inside the unit for shipping purposes Clean all debris from the basin Strainer Check the strainer in the basin to ensure that it is in its proper location over the pump suction Screens Protective air inlet screens are provided across the front of the fan section of all models Screens are not provided on the bottom of the fan section since most of the units are mounted on steel beams either on the roof or at ground level If units are installed in an elevated position bottom screens are recommended for safety protection and should be provided by the installing contractor Float Valve Adjustment The float valve is pre set at the factory however adjustment should be checked after rigging The float valve should be adjusted so that the center of the float is 1 below the center of the overflow connections when the valve is in the fully closed position Raise or lower the float by using the wing nut
13. follow the same procedure for the second section levered LS Series Cooling Towers Rigging Complete Units Units that are shipped with the pan fan and fill sections assembled can be lifted into final position on the structural steel as a complete unit U bolts or lift points are provided in the fill section below the eliminators for lifting and final positioning Figure 13 NOTE Use all of the U bolts or lift points provided for lifting ANGLE WITH HORIZONTAL MUST EXCEED 60 ANGLE WITH HORIZONTAL MUST EXCEED 60 LIFT POINT LIFT POINT 3 Xx 8 SPREADERS Figure 13 Complete 4 and 5 Wide Units Figure 14 Extended Lift Complete Unit The recommended method for extended lifts is to use slings under the unit as shown in Figure 14 Spreader bars should always be used between the cables at the top of the section to prevent damage to the upper flanges NOTE The U bolts or other lifting points should be used for final positioning only and for lifting where no danger exists If they are used for extended lifts safety slings and spreader bars should be provided under the sections as shown See Table 4 for the minimum H dimensions for rigging the entire unit for both standard and extended lifts Table 4 Minimum H Dimension for Complete Unit Rigging Unit Minimum Unit Minimum Footprint H Footprint Ane 4 x6 8 8P x 18 19
14. ing Location is Unit and Accessory Dependent If Space is Available Strapped Inside Unit Basin If No Space is Available Crated and Shipped Separately on Truck Bed Fan Screens If not mounted Shipping Location is Unit and Accessory Dependent If Space is Available Strapped Inside Unit Basin If No Space is Available Crated and Shipped Separately on Truck Bed Fan Screen Supports If not mounted If Space is Available Strapped Inside Unit Basin If No Space is Available Crated and Shipped Separately on Truck Bed Flume Plate Mounted to Flume Box Hot Water or Steam Coil Installed in Unit Basin Inlet Attenuation Shipping Location is Unit Dependent 14 15 RECYCLED recycled material ESC FSC C017250 J EVAPCO Inc P O Box 1300 Westminster MD 21158 USA Printed on recycled paper PHONE 410 756 2600 Fax 410 756 6450 E MAIL marketing evapco com using soy based ink 1500 0211 YGS 2011 EVAPCO Inc
15. insulated to protect them from damage All other connections or accessories at or below the water level must also be heat traced and insulated Water Treatment Proper water treatment is an essential part of the maintenance required for evaporative cooling equipment Galvanized equipment should be passivated prior to equipment startup to avoid the formation of white rust For more information on passivation and white rust please download a copy of EVAPCO s Engineering Bulletin 36 at www evapco com The spray water and the fluid inside the heat transfer coil should both be maintained with a water treatment program to ensure efficient system operation while maximizing the equipment s service life For more information on recommended water chemistry for EVAPCO equipment see the Operation and Maintenance Instructions for this equipment Maintenance Once the installation is complete and the unit is turned on it is important that it be properly maintained Maintenance is not difficult or time consuming but must be done regularly to assure full performance of the unit Refer to the operation and maintenance instructions supplied with the unit for proper maintenance procedures 13 ae Accessory Location Checklist LS Series Cooling Towers Accessories can ship in a variety of locations depending on the type of accessory the size of the unit and the accessories purchased with the unit See Table 10 for a guide to accessory location Table
16. nce shown LIFTING U BOLTS ANGLE WITH HORIZONTAL Figure 15 Discharge Hood Rigging and Assembly Tapered Hood Shown See Table 5 for the minimum H dimensions for rigging the discharge hood for both standard and extended lifts Table 5 Minimum H Dimension for Rigging Discharge Hoods and Discharge Attenuation Unit Minimum Unit Minimum Footprint Anh Footprint SHZ 4 x6 8 8P x 18 19 4 x 9 10 8P x 24 15 4 x 12 15 8P x 36 19 4 x 18 19 10 x 12 15 5 x 12 15 10 x 18 19 5 x 18 19 10 x 24 15 8P x 12 15 10 x 36 19 ap LS Series Cooling Towers Optional Discharge Attenuation Section Some units may be supplied with an optional discharge attenuation section This section will ship from the factory as a separate item or mounted on top of either the pan fan section or fill section to reduce freight charges Each discharge attenuation section is equipped with U bolts located at the four corners for lifting and final positioning Figure 16 Always use safety slings for extended lifts or where any hazard exists NOTE When combined with other sections the attenuation must be removed prior to any lift In all cases the hood section must be rigged as a separate part Once the fill section has been secured to the pan fan section wipe the top flanges to remove any dirt or moisture Place sealer tape over the mounting hole ce
17. nterline on the side flanges Apply two strips of sealer tape one partially overlapping the other on the end flanges as shown in Figures 6 and 7 Lower the attenuation section to within several inches of the fill section making sure the two sections do not touch and the sealer tape is not disturbed Place drift pins see Figure 17 in at least 3 of the corner mounting holes and gradually lower the fill section into place using the drift pins to guide the section down accurately onto the mating flange On 18 foot and 24 foot long sections drift pins should be used midway along the sides as well Place fasteners in all four corner bolt holes Then continue to install the rest of the fasteners working from the corners toward the center using drift pins to align the holes A fastener must be installed in every hole on the side flanges although none are required on the end flanges For units with two attenuation sections mount the first as described and then follow the same procedure for the second section Detail A ANGLE WITH HORIZONTAL ATTACH USING 3 8 HARDWARE Figure 16 Discharge Attenuator Rigging Figure 17 Discharge Attenuator Installation Instructions 10 LS Series Cooling Towers fevapce Optional Intake Attenuation Some units may be supplied with an optional intake attenuation section This section will ship from the factory as a separate item or mounted on top of ei
18. quipment as a result of seismic or wind forces Structural Steel Support Two structural I beams running the length of the unit are required for supporting the unit These beams should be located underneath the outer flanges of the unit as shown in Figure 1 See Table 1 for Steel Support Dimensions Mounting holes 3 4 in diameter are located in the bottom flange for bolting to the structural steel Refer to the recommended structural steel support drawing and certified print for exact bolt hole location Bolt the bottom section to the steel support before rigging the top section Beams should be sized in accordance with accepted structural practices Maximum deflection of the beam under the unit should be 1 360 of the unit length not to exceed 1 2 Deflection may be calculated by using 55 of the operating weight as a uniform load on each beam see certified print for operating weight LS Series Cooling Towers fevapce The supporting I beams should be level before setting the unit Do not level the unit by shimming between the bottom flange and the beams as this will not provide proper longitudinal support NOTE Consult IBC 2006 for required steel support layout and structural design Table 1 Steel Support Dimensions Unit B1 B2 j i Footprint Unit Only Unit with EEEE EER SEENE ERNA Intake Attn GEOR B B A 5 x12 5 5 3 8 141 4 4 2
19. s on the vertical threaded rod Do not adjust the horizontal rod During normal operation the water level will drop 3 to 4 below the overflow in condensers and coolers and to approximately 5 to 6 below the overflow in cooling towers See Table 6 for normal operating level for the LS style units Note The float valve has an available operating pressure between 20 and 50 psi Fan Rotation Bump start and check the fans for proper rotation Directional arrows are placed on the outside of centrifugal fan housings or on the inside of axial fan cylinders Table 6 Minimum Operating Level Unit Minimum Level Unit Minimum Level Footprint inches Footprint inches 4x6 11 8P x 18 15 4 x 9 11 8P x 24 12 4 x 12 11 8P x 36 15 4 x 18 11 10 x 12 12 5 x 12 11 10 x 18 15 5 x 18 11 10 x 24 12 8P x 12 12 10 x 36 15 Freeze Protection The simplest and most effective way of keeping the recirculated water from freezing is to use a remote sump With a remote sump when the recirculating water pump is shut off all recirculating water drains back to the sump If a remote sump is not being used pan heaters are available However the basin heater will not prevent the external piping from freezing For installations where water will be left in the basin during freezing conditions the make up water supply and overflow and drain lines must be heat traced and
20. t with the self tapping screws provided On double fan sided centrifugal units the fan motor guards are shipped in a separate crate with the motors see the Motor Installation UPPER SECTION q section in this bulletin NJ Wipe the flanges on the bottom of the fill section Check to see ATTACH USING that the water distribution connection on the fill section is in the correct position relative to the pan fan section see certified DR IET PINS P print Confirm that sealer tape has been applied to the top of P the pan fan section as shown in Figures 6 and 7 3 8 HARDWARE Lower the fill section to within several inches of the pan fan section making sure the two sections do not touch and the sealer tape is not disturbed Place drift pins see Figure 12 in at least 3 of the corner mounting holes and gradually lower the fill section into place using the drift pins to guide the section down accurately onto the mating flange On 18 foot and 24 foot long sections drift pins should be used midway along the sides as well Place fasteners in all four corner bolt holes Then continue to install the rest of the fasteners working from the corners toward the center using drift pins to align the holes A fastener must Figure 12 Mating Fill Section to Pan Fan Section be installed in every hole on the side flanges although none are required on the end flanges For units with two fill sections mount the first as described and then
21. the end flanges The sealer tape should overlap on the corners as shown in Figure 6 Do not splice the sealer tape along the end flanges and preferably not on the side flanges if it can be avoided Always remove the paper backing from the sealer tape For units which have two fill sections sealer tape must be applied to all internal flanges Figure 7 SEALER TAPE CENTERED OVER SLOTS SEALER TAPE CENTERED OVER SLOTS SEALER TAPE s SEALER TAPE FLANGE X SANA CENTERED OVER SLOTS SIDE FLANGE Figure 6 Proper Sealer Tape Application Figure 7 Sealer Detail for Center Joint of Units with Two of More Casing or Fill Sections Rigging the Fill Section U bolts or lift points are provided in the four corners of the fill section for lifting and final positioning Figure 8 Refer to the certified drawing for the fill section weight NOTE Use all of the U bolts or lift points provided for lifting The end and center eliminator sections should be removed before lifting from the U bolts or lift points For proper installation of the eliminator sections refer to the Eliminators section in this bulletin Caution On units shipped as two separate sections do not assemble sections and attempt to lift the entire unit The U bolts and lift points are designed to carry only the weight of their individual section erence LS Series Cooling Towers ANGLE WITH HORIZONTAL MUST EXCEED 60 Figure 8
22. ther the pan fan section or fill section to reduce freight charges Each intake attenuation section is equipped with U bolts located at the four corners for lifting and final positioning Figure 18 Always use safety slings for extended lifts or where any hazard exists NOTE When combined with other sections the attenuation must be removed prior to any lift In all cases the hood section must be rigged as a separate part Move the attenuation section to within several inches of the fan intake section Place drift pins see Figure 17 in at least 3 of the corner mounting holes and gradually move the fill section into place using the drift pins to guide the section accurately onto the mating flange On 18 foot and 24 foot long sections drift pins should be used midway along the sides as well Table 6 Minimum H Dimension for Rigging Inlet Attenuation Unit Minimum Unit Minimum Footprint H Footprint SHZ 4 x6 8 8P x 18 19 4 x 9 10 8P x 24 15 4 x 12 15 8P x 36 19 4 x 18 19 10 x 12 15 5 x 12 15 10 x 18 19 5 x 18 19 10 x 24 15 8P x 12 15 10 x 36 19 ANGLE WITH HORIZONTAL MUST EXCEED 60 LIFTING EARS Figure 18 Intake Attenuator Rigging 11 cea LS Series Cooling Towers Motor Installation 4 and 5 wide models Study Figure 19 before installing the motor bases on the unit Insert the lifting device into th
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