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Related Manuals for SPX Cooling Technologies Hexacool Air Cooled Condenser none
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- Page 1 Fluid Cooler Marley MC User Manual uk_07-1185C...
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Page 3: Table Of Contents
Note Warning Caution Note Contents This manual contains vital information for the proper installation and operation of your fluid cooler. Carefully read the manual before installation or operation of the fluid cooler and follow all instructions. Save this manual for future reference. Fluid Cooler Location ... - Page 4 The location and orientation of the fluid cooler can affect the safety of those responsible for installing, operating or maintaining the fluid cooler. However, since SPX Cooling Technologies does not determine the location or orienta- tion of the fluid cooler, we cannot be responsible for addressing those safety issues that are affected by the fluid cooler’s location or orientation.
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Page 5: Fluid Cooler Location
Note Warning Preparation Those are only some of the safety issues that may arise in the design 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: • Distribution level access platform with handrail system around the perimeter of the platform with a ladder for access to the platform. -
Page 6: Fluid Cooler Shipment
Installation Shipment Unless otherwise specified, the MC Fluid Cooler ships by truck (on flat bed trailers), which lets you receive, hoist, and install the tower in one continuous operation. Single-cell coolers ship on one truck. Multicell fluid coolers, depending on their size, may require more than one truck. Responsibility for the condition of the fluid cooler upon its arrival belongs to the trucker—as does the coordination of multiple shipments, if required. -
Page 7: Fluid Cooler Installation
Note Note Installation Fluid Cooler installation These installation instructions are intended to help you prepare be- fore your fluid cooler arrives. If discrepancies exist between these instructions and those shipped with the fluid cooler, the instructions shipped with the fluid cooler will govern. 1. Prior to placement of the fluid cooler, confirm that the supporting platform is level, and that the anchor bolt holes are correctly located in accordance with Marley drawings. -
Page 8: Motor Wiring
7. Wire motor(s) and recirculation pump(s) in accordance with wiring diagram. For maintenance/safety purposes, SPX Cooling Technologies recom- mends a lockout type disconnect switch for all mechanical equipment. In addition to a disconnect switch, the motor should be wired to main power supply through short circuit protection, and a magnetic starter with overload protection. - Page 9 Note Installation When using a two-speed starter: • Motor rotation must be the same at slow speed and high speed. • Single winding motor requires a starter with a shorting contactor. • Two-winding motor requires a starter without a shorting contactor. • All two-speed starters must have a 20 second time delay relay when switching from high speed to low speed. • Do not start the motor more than six times per hour (each low speed start and each high speed start count as one start).
- 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.
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Page 11: Mechanical Equipment
Warning Warning Caution Installation Mechanical Equipment: Warranty is void if the fluid cooler is operated at speeds which cause damaging vibrations to the tower and associated equipment. When utilizing a variable frequency drive, the fluid cooler must be tested across the full range of speeds and checked against CTI guidelines for excessive vibration. Speed ranges not meeting these guidelines must be locked out in the VFD. Always shut off electrical power to the fluid cooler fan motor prior to performing any maintenance on the fluid cooler. Any electrical switches should be locked out and tagged out to prevent others from turning the power back on. -
Page 12: Fluid Cooler Start-Up
Warning Operation Fluid Cooler Start-Up Among other sources, outbreaks of Legionnaires’ Disease have report- edly been traced to cooling towers and fluid coolers. Maintenance and water treatment procedures that prevent amplification and dissemina- tion 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: Fluid Cooler Operation
Operation the fluid cooler fan, execute one of the two alternative biocidal treat- ment programs described in the following: • Resume treatment with the biocide which had been used prior to shutdown. Utilize the services of the water treatment supplier. Maintain the maximum recommended biocide residual (for the specific biocide) for a sufficient period of time (residual and time will vary with the biocide) to bring the system under good biological... - Page 14 Note Caution Operation 2. air wet-bulb temperature: Cold process fluid temperature will also vary with the wet-bulb temperature of the air entering the fluid cooler. Reduced wet-bulb temperatures will result in colder process fluid tem- peratures. However, the cold process fluid temperature will not vary to the same extent as the wet-bulb.
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Page 15: Wintertime Operation
Caution Note Operation normal fan and motor sizes utilized on MC Fluid Coolers, anticipate that approximately 4 to 5 starts per hour are allowable. If your fluid cooler is equipped with a two-speed motor(s), you will enjoy greater opportunity for process temperature control. When the process fluid temperature becomes too cold, switching the fan to half-speed will cause the cold process fluid temperature to rise—... - Page 16 Caution Operation If the minimum allowable cold process fluid temperature is estab- lished at or near minimum heat load, it should be safe for all operat- ing conditions. Having established the minimum allowable cold water temperature, maintaining that temperature can be accomplished by fan manipulation, as outlined in item 4 under Fluid Cooler Operation.
- Page 17 Warning Caution Warning Caution Operation Basin heaters systems will not prevent the coil from freezing. Unless some means of freeze prevention is incorporated into your system, the tower basin and exposed pipework should be drained at the beginning of each wintertime shutdown period. If fluid cooler basin is drained, verify that all basin heaters have been shut off either by automatic cutoff or disconnect switch.
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Page 18: Water Treatment
Note Operation Water Treatment and Blowdown Maintaining Water Quality: The steel used in MC Fluid Cooler's has been galvanized with a heavy zinc coating averaging 2.0 mils in thickness. Other materials used (PVC drift eliminators, bearing, belts) are selected to offer maximum service life in a “normal” fluid cooler environment, defined as follows: Recirculating water with a pH between 6.5 and 8; a chloride content (as NaCl) below 500 ppm; a sulfate content (SO4) below 250 ppm; total al- kalinity (as CaCO ) below 500 ppm; calcium hardness (as CaCO... -
Page 19: Fluid Cooler Cleaning
Operation Fluid Cooler Cleaning: Any evaporative-type fluid cooler must be thoroughly cleaned on a Warning regular basis to minimize the growth of bacteria, including Legionella Pneumophila, to avoid the risk of sickness or death. Service personnel must wear proper personal protective equipment during decontami- nation. Do NOT attempt any service unless the fan motor is locked out. Operators of evaporative cooling equipment, such as closed circuit fluid coolers, should follow maintenance programs which will reduce to an ab- solute minimum the opportunity for bacteriological contamination. - Page 20 Note Operation centrations. The following table shows the minimum amount of blowdown (percent of flow) required to maintain different concentrations with various cooling ranges*: Cooling Range 1.5X 2.0X 3°C 6°C 1.58 9°C 2.38 1.18 11°C 3.18 1.58 14°C 3.98 1.98 Multipliers are based on drift of 0.02% of the circulating water rate.
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Page 21: Belt Adjustment
Bushing Fastener Torque Values Warning Maintenance Belt Tensioning The belts are adjusted by means of a hinged base with tensioning bolts accessible through the access panel/fan guards. Check tension frequently during the first 24-48 hours of run-in operation. To properly adjust the belt tension, position the fan motor so that moderate pressure on the belt midway between the sheaves will produce a shortens belt and bearing life. - Page 22 Maintenance Included with this instruction packet are separate User Manuals on each major operating component of the tower, and it is recommended that you read them thoroughly. Where discrepancies may exist, the separate User Manuals will take precedence. The following is recommended as a minimum routine of scheduled main- tenance: Always shut off electrical power to the tower fan motor prior to Warning...
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Page 23: Seasonal Shutdown Instructions
Maintenance Semi-annually: Clean and disinfect fluid cooler with biocides. Systems with biofouling, high general bacterial counts, or positive cultures of legio- nella may require additional cleaning. Refer to “Fluid Cooler Cleaning” section—page 19. Consult your water treatment expert as to prudent biological evaluation testing. - Page 24 Maintenance Fluid cooler framework: Check structural bolted connections and tighten as required. Fans: Check fan assembly bolting and tighten as required. Use torque values prescribed in the Fan User Manual. Fans shaft bearings: Lubricate fan shaft bearings at close of each oper- ating season—see page 22.
- Page 25 Maintenance SPX Cooling Technologies Services Our interest in your MC Fluid Cooler does not end with the sale. Having conceived, designed, and manufactured the most reliable and longest- lasting fluid cooler of its class, we want to make sure that you gain the maximum possible benefit from its purchase.
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Page 26: Maintenance Schedule
Maintenance Schedule Maintenance Service Inspect General Condition and Operation Observe Operation of: Mechanical–motor, pump, fan and drive mechanism Makeup valve (if equipped) Inspect for unusual noise or vibration inspect and Clean: Air inlet PVC drift eliminators Distribution system and nozzles Collection basin Fan and pump motor exterior Coil surface... -
Page 27: Additional Services
Additional Services increased load requirements: MC Fluid Coolers are designed so 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 fluid cooler system. -
Page 28: Troubleshooting
Troubleshooting Trouble Cause Power not available at motor terminals Wrong connections Motor will not start Low voltage Open circuit in motor winding Motor or fan drive stuck Rotor defective Motor running single-phase Motor leads connected incorrectly Bad bearings Unusual motor noise Electrical unbalance Air gap not uniform Rotor unbalance... - Page 29 Troubleshooting Trouble Cause Loose bolts and cap screws Unusual fan drive vibration Worn fan shaft bearings.. Unbalanced motor Impeller rubbing inside of cylinder Fan noise Fan shaft bearing. Belt squeal or chirping Belt slipping Insufficient blowdown Scale or foreign substance in circulating water system Water treatment deficiency Entering wet bulb temperature is above design...
- Page 32 SPX COOLING TECHNOLOGIES UK Ltd GREGORY’S BANK WORCESTER WR3 8AB, UNITED KINGDOM 44 (0) 1905 720 200 info.uk@spx.com spxcooling.com In the interest of technological progress, all products are subject to design and/or material change without notice. Manual uk_07-1185C ©2008 SPX Cooling Technologies...