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/ Mar le y MC Fluid Cooler / User Manual uk_07 -1 185C.
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3 Contents Fluid Cooler Location ............................................................................. 5 Fluid Cooler Shipment ............................................................................ 6 Receiving Fluid Cooler ..............
4 Preparation The Marley MC Fluid Cooler purchased for this installation represents the current state of the art in counterflow , for ced draft fluid cooler design. Ther - mally and operationally , it is the most efficient fluid cooler of its class.
5 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.
6 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 requir e more than one truck.
7 Fluid Cooler Installation These installation instructions are intended to help you prepare be- fore your uid cooler arrives. If discrepancies exist between these instructions and those shipped with the fluid cooler , the instructions shipped with the fluid cooler will govern.
8 6. Attach process fluid supply and r etur n piping to the coil. Standard field piping connection is an NPT male connection at the coil. A flanged connection requires a gasket between the fluid cooler and the fluid supply piping.
9 When using a two-speed starter: • Motorrotationmustbethesameatslowspeedandhighspeed. • Singlewindingmotorrequir esastarterwithashortingcontactor . • T wo-winding motor requir es a starter without a shorting contactor .
10 speeds. T o benefit from these advantages, it is important that the drive be installed correctly . Marley supplies VFD and VFD controls specically designed for our cooling products.
11 Mechanical Equipment: W arranty is void if the fluid cooler is operated at speeds which cause damagingvibrationstothe towerandassociatedequipment.
12 Fluid Cooler Start-Up Among other sources, outbreaks of Legionnaires’ Disease have report - edly been traced to cooling towers and fluid cooler s.
13 the fluid cooler fan, execute one of the two alter native 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 .
14 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 r esult in colder pr ocess fluid tem- peratures. However , the cold process fluid temperature will not vary to the same extent as the wet-bulb.
15 normal fan and motor sizes utilized on MC Fluid Coolers, anticipate that approximately 4 to 5 starts per hour ar e allowable. If your fluid cooler is equipped with a two-speed motor(s), you will enjoy gr eater opportunity for process temperatur e control.
16 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 temperatur e, maintaining that temperature can be accomplished by fan manipulation, as outlined in Item 4 under Fluid Cooler Operation .
17 Basin heaters systems will not prevent the coil from freezing. Unless some means of freeze prevention is incorporated into your system, the towerbasin and exposed pipeworkshould be drained at the beginning of each wintertime shutdown period.
18 W ater T reatment and Blowdown Maintaining W ater Quality: The steel used in MC Fluid Cooler's has been galvanized with a heavy zinc coating averaging 2.
19 W ar ning Fluid Cooler Cleaning: Any evaporative-type fluid cooler must be thoroughly cleaned on a regular basis to minimize the growth of bacteria, including Legionella Pneumophila, to avoid the risk of sickness or death.
20 centrations. The following table shows the minimum amount of blowdown (percent of flow) required to maintain differ ent concentrations with various cooling ranges*: * Range=Differ encebetweenhotwatertemperatureandcoldwatertemperature.
21 Maintenance Belt T ensioning The belts are adjusted by means of a hinged base with tensioning bolts accessible through the access panel/fan guar ds.
22 Included with this instruction packet ar e separate User Manuals on each major operating component of the tower , and it is recommended that you read them thoroughly . Wher e discr epancies may exist, the separate User Manuals will take precedence.
23 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.
24 Fluid cooler framework: Check structural bolted connections and tighten as requir ed. Fans: Check fan assembly bolting and tighten as requir ed. 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.
25 SPX Cooling T echnologies 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 pur chase.
26 Maintenance Schedule Maintenance Service Monthly Semi-annually Seasonal Startup or Annually Inspect General Condition and Operation x x Observe Operation of: Mechanical–motor , pump, fan and driv.
27 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.
28 T roubleshooting T rouble Cause Remedy Motor will not start Power not available at motor terminals Check power at starter . Correct any bad connections between the control apparatus and the motor . Check starter contacts and control cir cuit. Reset overloads, close contacts, reset tripped switches or r eplace failed control switches.
29 T roubleshooting T rouble Cause Remedy Unusual fan drive vibration Loose bolts and cap screws Tighten all bolts and cap screws on all mechanical equipment and supports. Worn fan shaft bearings.. Check fan shaft endplay . Replace bearings as necessary .
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Manual uk_0 7-1185C G R EGO RY’S BANK | WOR CESTE R WR3 8AB, U N ITE D KI N G DO M | 44 (0) 1905 7 20 200 | info.uk@spx.com | spxcooling.com In the interest of technological progress, all products are subject to design and/or material c hange without notice.
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