The 4" x" 4 tower diagonals carry loads to heavy- duty hot-dip galvanized steel anchor plates or hot-dip galvanized anchor weldments. The system of longitudinal and transverse diagonal bracing provides stability in a true tension-compression design.

All structural framing connections use 1/2" dia. galvanized machine bolts with either fiber-reinforced nylon shear connectors or FRP connector straps.

The fan deck is pressure treated exterior grade fir plywood designed for a uniform live load of 60 psf.

Access and Safety

The Sigma tower is designed to meet all OSHA requirements. A 3'-6" high guardrail system, complete with toprails, intermediate rails and toeboards, surrounds the entire top perimeter of the tower.

Aluminum ladders attached to the tower endwalls provide access to the fan deck level. Ladders begin at the cold water basin level and end at the top of the guarddrail. Each tower normally includes two ladders—one at each endwall.

Hinged doors through the endwall casing permit access to the interior of the tower at the basin level. Single-cell towers have one door. Multicell towers have doors in both endwalls, plus accessways through any and all partition walls.

Removable fan guards on Series 1000 models keep personnel away from operating fans. The galvanized, heavy-gauge welded rod guards lift off for easy access to

/ Construction and Components /

the mechanical equipment. The taller fan cylinders used on Series 1200 models effectively keep personnel away from the fan, eliminating the need for guards.

All mechanical equipment is accessible both from the interior of the tower and through the fan cylinder.

Every component of every tower is removable and replaceable.

Casing

Tower endwalls are cased with gray 8 oz/sq ft rib-type, fiber reinforced polyester sheets. Water and corrosion-proof,

FRP is immune to biological deterioration and requires no maintenance.

Casing ribs run vertically. Vertical joints between sheets are overlapped one rib and are sealed in the fill areas. Casing attaches to the structural members with stainless steel fasteners and neoprene bonded washers. Corner trim pieces are 12 oz/sq ft molded FRP.

Cold Water Collection Basin

Most Sigma owners install their towers over concrete cold water basins provided by others. However, you can choose a Marley wood collection basin as an optional accessory. (See page 11).

Consult your Marley sales representative for detailed dimensioned drawings and load schedules to help you with your basin design.

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SPX Cooling Technologies 1000, 1200 manual Access and Safety, Casing, Cold Water Collection Basin
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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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