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Manual SPX Cooling Technologies 98-1514E

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  • SPX Cooling Technologies 98-1514E - page 1

    / Mar le y A V Cooling T ower / User Manual 98-1514E ...

  • SPX Cooling Technologies 98-1514E - page 2

    2 Contents T ower Location ....................................................................................... 4 T ower Shipment ...................................................................................... 5 Receiving T ower ..................................................................................... 5 Hoisting T ower ....... ...

  • SPX Cooling Technologies 98-1514E - page 3

    3 Preparation The Marley A V Series cooling tower pur chased for this installation repr e- sents the current state of the art in crossow , induced draft cooling tower design. Thermally and operationally , it is the most efcient cooling tower of its class. These instructions—as well as those offered separately on motors, fans, oat valves, ...

  • SPX Cooling Technologies 98-1514E - page 4

    4 Preparation Those ar e only some of the safety issues that may arise in the design process. SPX strongly r ecommends that you consult a safety engineer to be sure that all safety considerations have been addr essed. Several options are available that may assist you in addressing some of these personnel safety concerns, including: — distribution ...

  • SPX Cooling Technologies 98-1514E - page 5

    5 T ower Shipment Unless otherwise specied, A V Series towers ship by truck (on at bed trailers), which lets you receive, hoist, and install the tower in one con- tinuous operation. Single-cell towers ship on one truck. Multicell towers, depending on their size, may requir e more than one truck. Responsibility for the condition of the tower u ...

  • SPX Cooling Technologies 98-1514E - page 6

    6 T ower Installation These installation instructions are intended to help you prepar e before your tower arrives. If discrepancies exist between these instructions and those shipped with the tower , the instructions shipped with the tower will govern. 1. Prior to placement of the tower , conrm that the supporting plat ...

  • SPX Cooling Technologies 98-1514E - page 7

    7 It is important that the cells be rmly anchored and aligned before theumeisattachedtothe2ndcell. 7. Repeat steps 2 and 3 for 2nd top section on A V63000 thru A V67000 models. 8. Repeat steps 4 through 7 for any r emaining cells. 9. Attach your cold water supply piping to the cold wate ...

  • SPX Cooling Technologies 98-1514E - page 8

    8 Normally , one of the following two inlet arrangements is provided: Standard distribution basin connections: There is a cir cular opening in the top deck of the tower near the air inlet face, drilled to accept standard 125# at-face ange. Remove the center inlet ume as - sembly to gain access to attach inlet fasteners. (Refer to the A V F ...

  • SPX Cooling Technologies 98-1514E - page 9

    9 10% higher than nameplate amps. High amps are common during tower commissioning when the tower is dry and the ambient air temperature is cool. • Do not start the motor more than six times per hour . Short cycling the tower will cause fuses, breakers or O.L.s to operate and will decrease motor life. When using a two-speed starter: • Motor rota ...

  • SPX Cooling Technologies 98-1514E - page 10

    10 er gy being used and provide better temperature contr ol. In addition, it reduces the mechanical and electrical stress on the motor and mechanical equipment. Electrical savings can be large during periods of low ambient temperature when the cooling requirement can be satised at r educed speeds. T o benet from these advantages, it is import ...

  • SPX Cooling Technologies 98-1514E - page 11

    11 necessary , correct the alignment. See the Maintenance section for belt tensioning and sheave alignment—page 22. Improper installation of the fan guard will destroy the structural in- tegrity of the fan guar d. It is essential that the fan guard be installed in accordance with the Field Installation Manual shipped with the tower . Do not force ...

  • SPX Cooling Technologies 98-1514E - page 12

    12 T ower Start-Up Among other sources, outbr eaks of Legionnaires’ Disease have reportedly been traced to cooling towers. Maintenance and water treatmentprocedur es thatpreventamplication and dissemination of Legionella and other airborne bacteria should be formulated and implemented BEFORE systems ...

  • SPX Cooling Technologies 98-1514E - page 13

    13 balance the makeup water with tower operation. Ideally , the oat valve setting will be such that no water is wasted through the overow at pump shutdown. However , the water level after pump start-up must be deep enough to assure positive pump suction. 5. If a multicell tower installation is equipped with ow-control valves, adjust them t ...

  • SPX Cooling Technologies 98-1514E - page 14

    14 When biocidal treatment has been maintained at a satisfactory level for at least six hours, the fan may be tur ned on and the system r etur ned to service. Resume the standar d water tr eatment program, including biocidal treatment. T ower Operation General: The cold water temperature obtained from an operating cooling tower will vary with the f ...

  • SPX Cooling Technologies 98-1514E - page 15

    15 order to pr event damage to the tower components. 4. Air ow rate: Reducing air ow through the tower causes the cold water temperatur e to rise. This is the approved method by which to control leaving water temperatur e. If your tower is equipped with a single-speed motor , the motor may be shut off when the water temperature becomes too co ...

  • SPX Cooling Technologies 98-1514E - page 16

    16 Note Wintertime Operation: The Marley ll system used in the A V Series cooling tower has air entrance louvers that are molded integrally as part of the ll. This feature makes these towers very for giving of cold weather operation, even at the low temperature and reduced load conditions encountered in fr ee cooling and other low temperature ...

  • SPX Cooling Technologies 98-1514E - page 17

    17 produced by the entire tower would indicate. Wintertime operation of multicell towers at low cold water temperature levels requires that the operator be especially watchful. 2. As cold air enters the louvers, it causes the water owing over the ll to be drawn inward towar d the center of the tower . Thus, under fan operat ion, the louv ers ...

  • SPX Cooling Technologies 98-1514E - page 18

    18 4. With no heat load on the circulating water , icing cannot be controlled effectively by air control during freezing weather . T owers must not be operated with r educed water rate and/or no heat load during freezing weather . If the circulating water system cannot be shut down, water returning from the process should be made to bypass the towe ...

  • SPX Cooling Technologies 98-1514E - page 19

    19 T ower Cleaning, W ater T reatment and Blowdown Maintaining W ater Quality: The steel used in A V Series towers has been galvanized with a heavy zinc coating averaging 2.0 mils in thickness. A V Series towers are also available in stainless steel, which is even mor e corrosion resistant than galvanized stee l in cer tain en viro nmen ts. Oth er ...

  • SPX Cooling Technologies 98-1514E - page 20

    20 Maintenance Cooling T ower Cleaning: Any evaporative-type cooling tower must be thoroughly cleaned on a regular basis to minimize the growth of bacteria, including Legio- nella Pneumophila, to avoid the risk of sickness or death. Service personnel must wear proper personal protective equipment? ...

  • SPX Cooling Technologies 98-1514E - page 21

    21 con centr ation s. This sta bil izati on o f conta minan t conce ntrat ion s is usu all y accomplished by blowdown, which is the constant discharge of a portion of the ci rcul ating water to wast e. As a rule , acce pta ble level s on which to base a treatment schedule will be in the range of 2-4 concentrations. The following table shows the min ...

  • SPX Cooling Technologies 98-1514E - page 22

    22 Sheave Alignment • The motor sheave is to be positioned as close as possible to the motor in order to minimize tor que on the motor bushings. • The motor and fan sheaves may have grooves that ar e not used. The bottom surface of the motor and fan sheaves must be aligned within 1 ⁄ 8 " of each other and level within 1 ⁄ 2 ° ( 1 ⁄ ...

  • SPX Cooling Technologies 98-1514E - page 23

    23 Maintenance Schedule of T ower Maintenance Som e main tenan ce pr oced ur es ma y re quir e mai nte nance perso nnel t o ente r the tow er . Each case d face of the tow er has a door fo r acces s to the inte rio r of the tower . All A V Series have a 30 ″ wide by 42 ″ high door opening. The purchaser or owner is responsible for providing a s ...

  • SPX Cooling Technologies 98-1514E - page 24

    24 Maintenance or worn out components. Use of high-pressure water may damage the eliminator and louver material. Observe operation of the oat valve. Depress the operating lever to make sure that the valve is operating freely . Inspect the suction screen for plug- ging. Remove any debris that may have accumulated. Check for any buildup of silt on ...

  • SPX Cooling Technologies 98-1514E - page 25

    25 Seasonal Shutdown Instructions When the system is to be shut down for an extended period of time, it is recommended that the entire system (cooling tower , system piping, heat exchangers, etc.) be drained. Leave the basin drains open. During shutdown, clean the tower (see W arning, page 20) and make any necessary repairs. Pay particular attentio ...

  • SPX Cooling Technologies 98-1514E - page 26

    26 lubricated before r etur ning motor to service. Prolonged Shutdown If shutdown period is longer than seasonal, contact your Marley sales repr esentative for additional information. SPX Cooling T echnologies’ Services Our inter est in your A V Series cooling tower does not end with the sale. Having conceived, designed, and manufactur ed the mos ...

  • SPX Cooling Technologies 98-1514E - page 27

    27 Maintenance Schedule Maintenance Service Monthly Semi-annually Seasonal Startup or Annually Inspect General Condition and Operation x x Observe Operation of: Mechanical–motor , fan and drive mechanism x x Makeup valve (if equipped) x x Inspect for unusual noise or vibration x x Inspect and Clean: Air inlet x x PVC drift eliminators x x Distrib ...

  • SPX Cooling Technologies 98-1514E - page 28

    28 e l b u o r T e s u a C y d e m e R t r a t S t o N l l i W r o t o M s l a n i m r e t r o t o m t a e l b a l i a v a t o n r e w o P s n o i t c e n n o c d a b y n a t c e r r o C . r e t r a t s t a r e w o p k c e h C • . r o t o m e h t d n a s u t a r a p p a l o r t n o c e h t n e e w t e b , s d a o l r e v o t e s e R . t i u c r i ...

  • SPX Cooling Technologies 98-1514E - page 29

    29 T roubleshooting e l b u o r T e s u a C y d e m e R e v i r D n a F l a u s u n U n o i t a r b i V s w e r c s p a c d n a s t l o b e s o o L t n e m p i u q e l a c i n a h c e m l l a n o s w e r c s p a c d n a s t l o b l l a n e t h g i T . s t r o p p u s d n a n a F y t e f a s s a n a f f o r e t n e c m o r f r a f s a e r a s e d a ...

  • SPX Cooling Technologies 98-1514E - page 30

    30 Additional Information Increased load requir ements: A V Series towers are designed such that cells of either equal or unequal capacity can be added in the future. This allows you to compensate for the load increases that normally occur with the replacement or addition of production equipment—and still retain continuity with respect to your co ...

  • SPX Cooling Technologies 98-1514E - page 31

    ...

  • SPX Cooling Technologies 98-1514E - page 32

    Manual 98-1514E 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 ...

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