Marley / Sigma 1000/1200 CoolingTower / Specifications: Options

Specifications

Specification Value

to modulate fan speed maintaining set point temperature. The drive's panel dis- play shall be able to display the set-point temperature and cold-fluid temperature on two separate lines. The bypass shall include a complete magnetic bypass circuit and with capability to isolate the VFD when in the bypass mode. Transfer to the bypass mode shall be manual in the event of VFD failure. Once the motor is transferred to the by-pass circuit the fan motor will run at constant full speed. The bypass circuit will not modulate ON and OFF based on fluid temperature. The application must be able to handle very cold fluid temperatures while the VFD is in a by-pass mode. Operator controls shall be mounted on the front of the enclosure and shall consist of start and stop control, bypass/VFD selection, Auto/ Manual selections, manual speed control. To prevent heating problems in the fluid cooloer fan motor and to assure proper gear reducer lubrication the VFD system shall de energize the motor once 25% motor speed is reached and cooling is no longer required. The fluid cooler manu- facturer shall supply VFD start-up assis- tance. Tower vibration testing throughout the speed range is required to identify and lockout any natural frequency vibra- tion levels which may exceed CTI guide- lines.

Marley Premium VFD System

6.4Add the following paragraph in the Mechanical Equipment section when VFD is used as a stand alone system: A complete UL listed Variable Speed Drive system in a NEMA 12 indoor

or NEMA 3R outdoor enclosure shall be provided. The VFD shall use PWM technology 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 posi- tion for safety. The system shall include a solid state, PI temperature controller to adjust frequency output of the drive in response to the tower fluid tempera- ture. The temperature of the fluid and

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SPX Cooling Technologies 1200, 1000 specifications Marley Premium VFD System
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1000, 1200 specifications

SPX Cooling Technologies, a prominent player in the cooling solutions market, is known for its cutting-edge designs and innovations in the field of cooling systems. Among its notable offerings are the SPX Cooling Technologies 1200 and 1000 series, which are engineered to meet the demands of various industrial applications.

The SPX Cooling Technologies 1200 series is renowned for its efficiency and robust construction. One of its main features is its modular design, allowing for easy installation and maintenance. This series is equipped with advanced cooling technology, enhancing energy efficiency while minimizing operating costs. The 1200 series utilizes a counterflow design, promoting improved heat exchange and a more direct airflow pattern. This results in higher thermal performance and reduced energy consumption, making it an ideal choice for operations that prioritize sustainability and cost-effectiveness.

On the other hand, the SPX Cooling Technologies 1000 series is tailored for versatility and reliability. This series boasts a design that accommodates a range of capacities and configurations, making it suitable for diverse applications, including HVAC, industrial processes, and power generation. One of the standout characteristics of the 1000 series is its handling of large thermal loads with minimal pressure drop, which ensures optimal performance in challenging conditions. Its corrosion-resistant materials enhance durability, making it resilient in harsh environments.

Both series incorporate advanced fan technology, which is designed to maximize airflow while minimizing noise levels. The fans are individually controllable, allowing for precise adjustments to meet specific cooling demands. Furthermore, these cooling towers are designed with user-friendly accessibility, simplifying maintenance and inspection processes, thereby reducing downtime.

SPX Cooling Technologies also places a significant emphasis on innovation. Both the 1200 and 1000 series are built with predictive maintenance capabilities, leveraging IoT technologies to monitor performance metrics in real time. This proactive approach enables facility managers to anticipate maintenance needs and address issues before they escalate into costly failures.

In summary, the SPX Cooling Technologies 1200 and 1000 series represent a substantial advancement in cooling technology, providing efficient, reliable, and modular solutions for various industrial applications. Their design, efficiency, and advanced features position them as leaders in the market, responding to the evolving needs of industries worldwide.
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