Marley MH Manual de usuario

/ MH Fluid Cooler /User Manual 05-116F

10Donotstartthemotormorethanfourtovetimesperhour(eachlowspeedstartandeachhighspeedstartcountasonestart).When using a VFD:Bef

11 WarningImproperuseofaVFDmaycausedamagetoequipmentorpersonalinjury. Failure to correctly install the VFD drive will automatically voida

12Improper installation of the fan cylinder and fan guard will destroy the structural integrity of the fan guard. Failure of the fan guard could allow

13Fluid Cooler Start-UpAmongothersources,outbreaksofLegionnaires’Diseasehavereport-edly been traced to cooling towers and fluid coolers. Mainte

14 Some trial and error adjustment of the float valve may be required to balance the makeup water with tower operation. Ideally, the float v

15Fluid Cooler OperationGeneral:The cold process fluid temperature obtained from an operating fluid cooler will vary with the following influences:1. H

16 Fan cycling limits: Considering the normal fan and motor sizes utilized on MH Fluid Coolers, anticipate that approximately4 to 5 starts pe

17motor is operating or not. The purpose of the energized space heater is to prevent moisture inside the unit from corroding the internal components.

18Wintertime OperationThe Marley film-fill system used in the MH Fluid Cooler has air entrance louvers that are molded as an integral part of the fill. T

19 Warning Warning Warning Cautionatmospheric moisture from the entering air. Such lightly wetted areas are most subject to freezing. Therefore, if

20Protection Against Coil Freezing:Ethylene and propylene glycol solutions are the best means to protect the coil from freezing. The following table p

21Draining the coil is not acceptable as a normal method of freeze protection—draining promotes corrosion inside the coil tubes. Drain-ing is acceptab

22The structure and coil of your fluid cooler consists primarily of galvanized steel, therefore your water treatment program must be compatib

23MaintenanceCoil Eliminator RemovalThe coil eliminators are comprised of a series of PVC pack assemblies, oriented to strip water from the air prior

24MaintenanceFluid Cooler Cleaning:Any evaporative-type fluid cooler must be thoroughly cleaned on a regular basis to minimize the growth of bacteria,

25a treatment schedule will be in the range of 2-4 concentrations. The following table shows the minimum amount of blowdown (percent of flow) required

26Belt TensioningSee Figure 1 and Figure 2 for MH Fluid Cooler models MHF702 thru MHF705. Loosen specified hardware located at the top and

27A Dodge® V-Belt Tension Tester is an alternate method for tensioning V-belts. Check with you local belt supplier.See Figure 3 for MH Fluid Cooler mo

28Sheave AlignmentAlways shut off electrical power to the tower fan motor prior to performing any inspections that may involve physical con

29Fluid Cooler MaintenanceSome maintenance procedures may require maintenance personnel to enter the fluid cooler. Each cased face of the fluid cooler h

3ContentsFluid Cooler Location ...5Fluid Cooler Shipment

30Monthly (Weekly at start up): Observe, touch, and listen to the fluid cooler. Become accustomed to its normal appearance, sound, and level of vibrati

31Semi-Annually: If equipped, check the belt tension and condition.If equipped with dampers, lubricate jack shaft bearings and tiebar linkage with sil

32Motor Relubrication InstructionsMotor located outside plenum option. Double-flow models MHF706 and MHF707 only.Openandlockoutdisconnects

33MaintenanceDraining the coil is not recommended—draining promotes corro-sion inside the coil tubes. See protecting coil in Freezing weather on

34At start of new operating season, make sure bearings are adequately lubricated before returning motor to service.Long-Term Storage ProceduresInstruc

35Recirculation pumps: All pumps and pump motors should be taken down and stored indoors (pumps and motors may be stored fully assembled). Then, every

36 Cleaning Cleaning of dirty belts can be carried out with a mixture of glycerin and spirit in a ratio of 1:10.Benzene, benzol, turpentine and

37MaintenanceReplacement parts: A complete stock of parts and components is maintained at one or more of the various Marley plants. In cases of emerge

38Maintenance ScheduleMaintenance Service Monthly Semi-annually Seasonal Startup or AnnuallyInspect General Condition and Operationx xObserve Operatio

39TroubleshootingTrouble Cause RemedyMotor will not startPower not available at motor terminalsCheck power at starter. Correct any bad connections bet

4PreparationThe Marley MH Fluid Cooler with CoolBoost™, purchased for this installation represents the current state of the art in crossflow, induced d

40Trouble Cause RemedyGeareducer noise. (If equipped).Geareducer bearingsIf new, see if noise disappears after one week of operation. Drain flush, and

41Increased load requirements: MH Fluid Coolers are designed so that cells of either equal or unequal capacity can be added in the future. This allows

M05-116F7401 WEST 129 STREET | OVERLAND PARK, KANSAS 66213 UNITED STATES | 913 664 7400 | [email protected] | spxcooling.comIn the interest o

5PreparationIt is not intended nor assumed that access to the fan deck onsingle-flow models—Models MHF702 thru MHF705—is needed or n

6The fluid cooler must be located at such distance and direction to avoid the possibility of contaminated fluid cooler discharge air being drawnintobu

7Hoisting clips are provided for ease of unloading and positioning the fluid cooler. For overhead lifts or where additional safety is require

83. Before setting top module in place on bottom module, clean any debris from the underside of the top module fill, skid and beams and from the top

9 CautionForweldedconnectionsprotectadjacentareasfromexcessiveheatandsparksordamagemayoccur.7. Wire motor(s) and recirculation pump(s