SPX Cooling Technologies Marley MD specifications Vibration Limit Switch

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Marley / MD CoolingTower / Specifications: Options

36

 

Specifications

 

Specification Value

 

Vibration Limit Switch:

 

 

6.5

Add the following paragraph in the

 

■ Unless specified otherwise, a 3171 switch will

 

Mechanical Equipment section: A

 

be provided. A double-pole, double-throw

 

single-pole, double-throw vibration limit

 

model is also available. If purchased in con-

 

switch in a NEMA 4 housing shall be

 

junction with the Control System, it is also

 

installed on the mechanical equipment

 

factory-wired. The requirement for manual

 

support for wiring into the fan motor

 

reset assures that the tower will be visited to

 

shutdown circuit. The purpose of this

 

determine the cause of excess vibration.

 

switch will be to interrupt power to the

 

 

 

motor in the event of excessive vibra-

 

 

 

tion. It shall be adjustable for sensitiv-

 

 

 

ity, and shall require manual reset.

 

 

 

Basin Heater:

 

 

11.2

Add the following paragraph in the

 

■ The Marley basin heater components described at left represent our rec-

 

Cold Water Provide an electric immer-

 

ommendation for a reliable automatic system for the prevention of basin

 

sion heater for each cell of the tower

 

freezing.They are normally shipped separately for installation at the job-

 

to prevent freezing of water in the

 

site by the installing contractor. When purchased in conjunction with the

 

collection basin during periods of shut-

 

enhanced Control System option, however, they are customarily factory-

 

down. The rod type heater is installed

 

mounted and tested.

 

in the side of the cold water basin.

 

 

 

Each heater will include an integral

 

Submerged in basin water, in which zinc ions are present, copper

 

thermostat, set point nominally 4°C

 

immersion heaters must not be used. Insist upon stainless steel.

 

but adjustable to suit local operating

 

 

 

requirements.

 

The ambient air temperature that you insert in the specifications should

 

Fan Motor Variable Speed Drive:

 

be the lowest 1% level of winter temperature prevalent at site.

 

 

 

6.4

Add the following paragraph in

 

■ Marley VFD drive systems are designed to combine absolute tempera-

 

the Mechanical Equipment section

 

ture control with ideal energy management. The cooling tower user

 

when VFD is used as a stand alone

 

selects a cold water temperature and the drive system will vary the

 

system: A complete UL listed Variable

 

fan speed to maintain that temperature. Precise temperature control is

 

Speed Drive system in a IP52 indoor or

 

accomplished with far less stress to the mechanical equipment compo-

 

IP56 3R outdoor enclosure shall be pro-

 

nents. The improved energy management provides fast payback.

 

vided. The VFD shall use PWM technol-

 

 

 

ogy with IGBT switching and integrated

 

 

 

bypass design. VFD output switching

 

 

 

shall not cause mechanical issues with

 

 

 

gearbox teeth or drive shafts. The VFD

 

 

 

shall catch a fan spinning in the reverse

 

 

 

direction without tripping. The panel shall

 

 

 

include a main disconnect with short

 

 

 

circuit protection and external operating

 

 

 

handle, lockable in the off position for

 

 

 

safety. The system shall include a solid

 

 

 

state, PI temperature controller to adjust

 

 

 

frequency output of the drive in response

 

 

 

to the tower cold-water temperature.

 

 

 

The temperature of the cold water and

 

 

 

set point shall be displayed on the door

 

 

 

of the control panel. The bypass shall

 

 

 

include a complete magnetic bypass

 

 

 

circuit with capability to isolate the VFD

 

 

 

when in the bypass mode. Transfer to

 

 

 

the bypass mode shall be automatic in

 

 

 

 

 

 

the event of VFD failure or for specific

 

 

 

trip conditions allowing safe transfer

 

 

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Contents Marley MD Cooling Tower Page Marley / MD CoolingTower / Table of Contents Marley / MD CoolingTower Marley / MD CoolingTower Marley / MD CoolingTower / Engineering Data Schematic PlanSide Elevation MD5008 Single Cell END ElevationDBA Dimensions MD5008 Multicell Side Elevation2371 MD5008MAC2L MD5010 Single Cell 3651569 140 MD5010PAC1L MD5010 Multicell 3651 3715MD5010PAC2L Side Elevation MD5016 Single Cell 3607153 Model Nominal Tons Motor Operating MD5016 TWO or Three Cell MD5016PAC2L MD5016 Four or More Cells DBA Dimensions Design Shipping Weight Model MD5016 Four Cell Quad MD5016PAC4B Marley / MD CoolingTower / Engineering Data Support Supporting Steel Single CellView a CL Anchor Bolt Supporting Steel MulticellSIDE-OUTLET Suction Connection END-OUTLET Suction ConnectionSump Section Marley / MD CoolingTower / Engineering Data Hoisting 70 MAXElectric Basin Heaters Indoor Storage TankMarley / MD CoolingTower / Engineering Data Water Quality BlowdownWater Treatment Marley / MD CoolingTower / Specifications Base Performance WarrantyBase Thermal PerformanceDesign Loading ConstructionMechanical Equipment Marley / MD CoolingTower / Specifications Base Fill, Louvers and Drift Eliminators Hot Water Distribution SystemCasing and Fan Guard Access WarrantyCold Water Collection Basin Marley / MD CoolingTower / Specifications Options Specifications Specification ValueConvenience and Safety Options Mechanical Access Platform Control Options Mechanical Equipment secVibration Limit Switch Specifications Miscellaneous Options Equalizer Flume Weir Gates Premium Efficiency MotorSound Control Gregorys Bank Worcester WR3 8AB United Kingdom

Marley MD specifications

SPX Cooling Technologies has long been recognized as a leader in the cooling systems industry, and the Marley MD series exemplifies this commitment to innovation and efficiency. The Marley MD line is engineered for performance and versatility, ideal for a wide range of industrial and commercial cooling applications.

One of the defining features of the Marley MD is its advanced, modular design. This modular approach allows for easy scalability, enabling users to customize their cooling solution based on specific operational needs. Each unit can be configured to meet varying cooling loads, making the Marley MD suitable for both small and large facilities.

The Marley MD utilizes state-of-the-art materials, promoting durability and longevity. Constructed with corrosion-resistant components, these units are designed to withstand harsh environmental conditions, ensuring reliable operation over extended periods. The casing often features a combination of high-quality steel and advanced coatings that provide protection against the elements, which is especially important for outdoor installation.

Additionally, the Marley MD incorporates innovative technologies such as drift eliminators and splash bars, which significantly enhance water efficiency. These features minimize water loss and reduce the risk of contaminants entering the cooling system, leading to better overall performance. The design is also optimized for low sound levels, making these systems suitable for use in sensitive environments where noise reduction is a priority.

Energy efficiency is a critical characteristic of the Marley MD. It leverages advanced fan technology and airflow management to enhance cooling performance while minimizing energy consumption. By using high-efficiency motors and variable-speed drives, the Marley MD can operate at optimal levels under varying load conditions, resulting in significant energy savings over traditional cooling systems.

Another vital aspect is the ease of maintenance. The Marley MD is designed for straightforward access, allowing for efficient servicing and reducing downtime during maintenance activities. Features like removable panels and accessible components ensure that technicians can perform routine checks and repairs quickly and efficiently.

In conclusion, the Marley MD by SPX Cooling Technologies stands out due to its modular design, durable construction, advanced water management technologies, energy efficiency, and ease of maintenance. These characteristics make it an excellent choice for any facility looking to optimize its cooling operations while ensuring reliable and sustainable performance.
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