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Table of Contents
Related Manuals for SPX Cooling Technologies MARLEY AV 98-1514E
Summary of Contents for SPX Cooling Technologies MARLEY AV 98-1514E
- Page 1 Marley AV Cooling Tower User Manual 98-1514E...
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Page 2: Table Of Contents
Note Warning Caution Note Contents This manual contains vital information for the proper installation and operation of your cooling tower. Carefully read the manual before installation or operation of the tower and follow all instructions. Save this manual for future reference. Tower Location ... -
Page 3: Safety First
The location and orientation of the cooling tower can affect the safety of those responsible for installing, operating or maintaining the tower. How- ever, since SPX Cooling Technologies does not determine the location or orientation of the tower, we cannot be responsible for addressing those safety issues that are affected by the tower’s location or orientation. -
Page 4: Tower Location
Preparation Those are only some of the safety issues that may arise in the design Note process. SPX strongly recommends that you consult a safety engineer to be sure that all safety considerations have been addressed. Several options are available that may assist you in addressing some of these personnel safety concerns, including: —... -
Page 5: Tower Shipment
Receiving and Hoisting 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. -
Page 6: Tower Installation
Note Note Note Installation 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 the supporting platform is level, and that the anchor bolt holes are correctly located in accor- dance with Marley drawings. - Page 7 Note Caution Caution Installation 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 basin outlet connection in accordance with drawing instructions, and utilizing gaskets provided by Marley.
- Page 8 Warning Installation 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 attach inlet fasteners.
- Page 9 Note Installation 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.
- Page 10 The length of this warranty avoidance will be contingent on properly installing the VFD system and repairing any damage that may have occurred during its operation. SPX Cooling Technologies does not assume responsibility for any technical support or damages for problems associate with non-Marley brand VFD systems.
- Page 11 Warning Caution Note Installation 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 guard. It is essential that the fan guard be installed in accordance with the Field Installation Manual shipped with the tower.
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Page 12: Tower Start-Up
Warning Note Operation 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 systems are operated and continued regularly thereafter to avoid the risk of sickness or death. - Page 13 Operation 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.
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Page 14: Tower Operation
Operation 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 operating cooling tower will vary with the following influences: 1. - Page 15 Caution Operation 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 off when the water temperature becomes too cold.
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Page 16: Wintertime Operation
Note Caution Operation 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 encountered in free cooling and other low temperature applications. - Page 17 Warning Operation 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 tower.
- Page 18 Caution Warning Operation 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 the process should be made to bypass the tower.
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Page 19: Tower Cleaning, Water Treatment And Blowdown
Warning Operation 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 steel in certain environments. - Page 20 Maintenance Cooling Tower Cleaning: Any evaporative-type cooling tower must be thoroughly cleaned on Warning 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 during decontamination. Do NOT attempt any service unless the fan motor is locked out.
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Page 21: Belt Tensioning
Note Maintenance concentrations. This stabilization of contaminant concentrations is usually accomplished by blowdown, which is the constant discharge of a portion of n i l ° 5 ° 8 ° 0 ° 6 ° 5 ° 3 ° 0 ° 1 °... -
Page 22: Sheave Alignment
Maintenance 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 ⁄... -
Page 23: Schedule Of Tower Maintenance
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 responsible for providing a safe method for entering or exiting the access door. Protective clothing to avoid cuts from sheet metal should be worn. - Page 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.
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Page 25: Seasonal Shutdown Instructions
Maintenance 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 make any necessary repairs. -
Page 26: Prolonged Shutdown
With the exception of the motor, drive system, and float valve, every standard component of your tower is designed and manu- factured by SPX Cooling Technologies. We do this because commercially available components have not proved capable of withstanding the harsh environment of a cooling tower—nor do they contribute their share to the... -
Page 27: Maintenance Schedule
Maintenance Schedule Maintenance Service Inspect General Condition and Operation Observe Operation of: Mechanical–motor, fan and drive mechanism Makeup valve (if equipped) Inspect for unusual noise or vibration inspect and Clean: Air inlet PVC drift eliminators Distribution basin, nozzles and collection basin Fan motor exterior Check: Collection water basin level... -
Page 28: Troubleshooting
Troubleshooting l l i a t l c r i t i u c i r n i l t i h a t l t l u c i f o i t l a i a t l n i l o i t •... - Page 29 Troubleshooting s t l s t l c i f T " ) " t f i t i x y t l t f i i l e n i l " c i f l l i f i l e l l a s t l...
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Page 30: Additional Information
Tower rebuilding: SPX Cooling Technologies routinely rebuilds and up- grades cooling towers of all materials and manufacture. If your tower ever reaches the limit of its service life, we recommend that you investigate the cost of rebuilding before you routinely order a new replacement tower. - Page 32 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 Manual 98-1514E...