Adjusting Fan Blade Pitch

The trial pitch is the calculated setting for design conditions

Note(water rate , heat load, air density, and brake horsepower). The trial pitch is provided by SPX Cooling Technologies (see page 2).

Figure 6

2"

BLADE

STRAIGHT

BEVEL

TIP

EDGE

PROTRACTOR

 

 

PITCH ANGLE

 

Section

 

1–Select a position on the fan circumference and rotate each blade to this common location when setting or checking blade pitch. Sup- port the blade tip to maintain a common rotation plane while setting the fan pitch. The pitch is set within 2″ (51mm) of the blade tip by placing a bevel protractor on top of a parallel sided straight edge that extends across blade width as shown in Figure 6.

2–Pull the blade outward so the safety shoulder is in contact with the blade clamp, then set the pitch. See Figure 5. Blades should be within ± 1/4° of the desired pitch angle. After the de- sired setting is obtained, progressively tighten the C\v″ hex nuts to 120 ft·lbƒ (163 N·m) torque. Recheck the pitch angle. If required, loosen the hex nuts and reset the pitch as necessary until the proper pitch angle is obtained with the C\v″ hex nuts at 120 ft·lbƒ (163 N·m) torque.

3–Repeat step 2 for all blades.

4–Check the vertical blade-tip track variation. The allowable vertical variation from a reference plane is ±1″ (25mm). If a blade’s tip track is out of tolerance, loosen the C\v″ hardware and change the blade tip support location higher or lower as required to adjust the tip track. Recheck blade pitch angle.

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Page 6
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SPX Cooling Technologies HP7000 user manual Section, Adjusting Fan Blade Pitch
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HP7000 specifications

SPX Cooling Technologies has established itself as a leader in the cooling industry, and their HP7000 series is a testament to their commitment to innovation and efficiency. The HP7000 is designed for a wide range of applications, including industrial processes, commercial buildings, and HVAC systems, showcasing advanced engineering and design aimed at optimizing performance and sustainability.

One of the standout features of the HP7000 is its superior energy efficiency. Engineered with high-performance components, it utilizes advanced fan technology and a unique airflow design that minimizes energy consumption while maximizing cooling output. The intelligent control system ensures that the unit operates at optimal capacity, adjusting to varying loads and environmental conditions for enhanced efficiency.

The HP7000 series is equipped with cutting-edge materials designed to withstand harsh environments. The use of corrosion-resistant coatings and high-quality components extends the lifespan of the unit, making it a reliable choice for long-term operations. This durability is further complemented by a modular design, allowing for easier maintenance and servicing.

Technologically, the HP7000 integrates real-time monitoring capabilities through its state-of-the-art control system. Users can access performance data remotely, facilitating proactive maintenance and ensuring that the cooling system operates at peak efficiency. This feature not only reduces downtime but also enhances overall system reliability.

The unit also adheres to strict environmental standards, reducing its carbon footprint and making it an eco-friendly option. The design incorporates low-emission refrigerants, aligning with global sustainability goals while ensuring compliance with regulations. This environmentally conscious approach encompasses noise reduction technologies, ensuring that the HP7000 operates quietly, contributing to a more pleasant work environment.

In addition, the HP7000 series offers customization options to meet specific project requirements. Various configurations and sizes are available, allowing engineers and facility managers to select the perfect unit for their application. This versatility, combined with a robust warranty and support from SPX Cooling Technologies, makes the HP7000 an appealing choice for those seeking a high-performance cooling solution.

In summary, the SPX Cooling Technologies HP7000 series stands out for its energy efficiency, durability, advanced monitoring features, eco-friendliness, and customizable options. It represents a blend of innovation and practicality, making it an ideal selection for modern cooling needs across various industries.
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