SPX 98-1514E - Manual

5 Tower Shipment Unless otherwise specified, AV Series towers ship by truck (on flat 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 require more than one truck. Res...

6 Tower installation These installation instructions are intended to help you prepare 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, confirm that t...

7 It is important that the cells be firmly anchored and aligned before the flume is attached to the 2nd cell. 7. Repeat steps 2 and 3 for 2nd top section on AV63000 thru AV67000 models. 8. Repeat steps 4 through 7 for any remaining cells. 9. Attach your cold water supply piping to the cold water bas...

8 Normally, one of the following two inlet arrangements is provided: Standard distribution basin connections: There is a circular opening in the top deck of the tower near the air inlet face, drilled to accept standard 125# flat-face flange. Remove the center inlet flume as-sembly to gain access to ...

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....

10 ergy being used and provide better temperature control. 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 satisfied at reduced speeds. To...

12 Tower Start-Up Among other sources, outbreaks of Legionnaires’ Disease have reportedly been traced to cooling towers. Maintenance and water treatment procedures that prevent amplification and dissemination of Legionella and other airborne bacteria should be formulated and implemented BEFORE syste...

13 balance the makeup water with tower operation. Ideally, the float valve setting will be such that no water is wasted through the overflow 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 equ...

14 When biocidal treatment has been maintained at a satisfactory level for at least six hours, the fan may be turned on and the system returned to service. Resume the standard water treatment program, including biocidal treatment. Tower Operation general: The cold water temperature obtained from an ...

15 order to prevent damage to the tower components. 4. Air flow rate: Reducing air flow through the tower causes the cold water temperature to rise. This is the approved method by which to control leaving water temperature. If your tower is equipped with a single-speed motor, the motor may be shut o...

16 Note Wintertime Operation: The Marley fill system used in the AV Series cooling tower has air entrance louvers that are molded integrally as part of the fill. This feature makes these towers very forgiving of cold weather operation, even at the low temperature and reduced load conditions encounte...

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 flowing over the fill to be drawn inward toward the center of the to...

18 4. With no heat load on the circulating water, icing cannot be controlled effectively by air control during freezing weather. Towers must not be operated with reduced water rate and/or no heat load during freezing weather. If the circulating water system cannot be shut down, water returning from ...

19 Tower Cleaning, Water Treatment and Blowdown Maintaining Water Quality: The steel used in AV Series towers has been galvanized with a heavy zinc coating averaging 2.0 mils in thickness. AV Series towers are also available in stainless steel, which is even more corrosion resistant than galvanized ...

20 Maintenance Cooling Tower 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 dur...

21 concentrations. This stabilization of contaminant concentrations is usually accomplished by blowdown, which is the constant discharge of a portion of the circulating water to waste. As a rule, acceptable levels on which to base a treatment schedule will be in the range of 2-4 concentrations. The ...

22 Sheave alignment • The motor sheave is to be positioned as close as possible to the motor in order to minimize torque on the motor bushings. • The motor and fan sheaves may have grooves that are not used. The bottom surface of the motor and fan sheaves must be aligned within 1 ⁄ 8 " of each o...

23 Maintenance Schedule of Tower Maintenance Some maintenance procedures may require maintenance personnel to enter the tower. Each cased face of the tower has a door for access to the interior of the tower. All AV Series have a 30 ″ wide by 42 ″ high door opening. The purchaser or owner is responsi...

24 Maintenance or worn out components. Use of high-pressure water may damage the eliminator and louver material. Observe operation of the float 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 hav...

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 Warning, page 20) and mak...

26 lubricated before returning motor to service. Prolonged Shutdown If shutdown period is longer than seasonal, contact your Marley sales representative for additional information. SPX Cooling Technologies’ Services Our interest in your AV Series cooling tower does not end with the sale. Having conc...

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: ...

28 e l b u o r T e s u a C y d e m e R tr a t S t o N lli 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 li a v a t o n r e w o P s n o it c e n n o c d a b y n a t c e rr o C .r e tr 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 rt n o c e h t n e e w t e b , s d...

30 Additional Information increased load requirements: AV 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 s...