SPX Cooling Technologies HP7I user manual Motor Load, Service

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Motor Load

1.The corrected horsepower should be close to but not exceed the contract horsepower specified (see page 2). Determine corrected horsepower with this equation:

 

 

HP

 

= VOLTSA AMPSA DENSITYD

HPN

 

 

 

C

 

VOLTSN AMPSN DENSITYA

 

HPC

=

Corrected Horsepower

VOLTSN

=

Nameplate Volts

VOLTSA

=

Actual Volts

AMPSN

=

Nameplate Amperage

AMPSA

=

Actual Amperage

HPN

=

Nameplate Horsepower

DENSITYA

=

Actual Air Density

DENSITYD

=

Design Air Density

Actual volts and amperage must be obtained with the fan running and the specified rate of water flowing over the tower after the motor and Geareducer have reached operating temperature (approximately 30 minutes of opera- tion).

2.The blade pitch can be changed to obtain contract horsepower. A one degree pitch change will change the power about eight horsepower. If blades are repitched, follow pitching and fastener tightening instructions detailed in the Fan Assembly section of this manual.

Measurements taken on motors operating with Variable Frequency CautionDrive controls may read up to 15% high from errors in measuring the approximated sine wave. Instruments capable of measuring a squared off wave form accurately should be used for measuring power in this

situation.

When checking and/or changing blade pitch or cycling fan in normal operation, do not exceed 30 sec/hour total motor starting time as mo- tor may be overheated.

Service

When contacting your Marley sales representative for repair or replacement parts, please refer to the tower serial number.

Replacement blades can be installed without rebalancing. The fan series— HP7i—and diameter are required when ordering replacement parts.

If rebalancing is required, return the fan hub to Marley for factory rebal- ance. Obtain a Customer Return Material tag from your Marley sales representative.

7401 WEST 129 STREET OVERLAND PARK, KANSAS 66213 UNITED STATES 913 664 7400 spxcooling@ct.spx.com spxcooling.com

In the interest of technological progress, all products are subject to design and/or material change without notice. ©2009 SPX Cooling Technologies, Inc. Printed in USA

Manual 92-1471E

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Contents Marley HP7i Fan 72 thru 168 Diameter 6 Blade Typical Fan Assembly Assembly MaintenanceService Motor Load

HP7I specifications

SPX Cooling Technologies HP7I is a prominent cooling solution designed to deliver efficient thermal management in various industrial applications. Engineered with advanced features and technologies, the HP7I is recognized for its robust design and exceptional performance capabilities.

One of the main features of the HP7I is its efficient heat exchange technology. This unit employs a closed circuit cooling system that enhances heat transfer efficiency while minimizing the potential for contamination. The design focuses on optimizing fluid flow, which ensures consistent cooling performance even under varying load conditions. This feature is particularly beneficial in applications where reliable temperature control is critical for operational efficiency.

Another hallmark of the HP7I is its flexible configuration options. The cooling unit can be tailored to meet varying site demands, thanks to its modular design. Whether installed in a compact space or integrated into a larger cooling system, the HP7I's adaptability makes it a preferred choice for engineers and facility managers seeking customizable cooling solutions.

In terms of energy efficiency, the HP7I stands out with its innovative fan technology. The unit is equipped with high-efficiency fans that are designed to consume less power while delivering maximum air flow. This feature not only reduces operational costs but also contributes to a more sustainable cooling solution, aligning with today’s emphasis on energy conservation.

The HP7I also features a durable construction, ensuring longevity and resilience in harsh operating environments. The materials used are selected for their ability to withstand corrosion, wear, and extreme temperatures. This durability minimizes maintenance requirements and extends the lifecycle of the cooling unit, providing long-term value to users.

Ease of maintenance is another significant advantage of the HP7I. The unit's design includes easy access points for inspection and servicing, reducing downtime during routine maintenance. Additionally, SPX incorporates smart technology features that enable remote monitoring, allowing operators to track performance data and receive alerts for potential issues before they escalate.

Moreover, the HP7I is compliant with various industry standards, ensuring reliability and safety in its operation. This compliance, along with its cutting-edge features, makes the HP7I a leading choice for industries such as power generation, petrochemical processing, and manufacturing.

In conclusion, SPX Cooling Technologies HP7I delivers a powerful combination of efficiency, flexibility, and durability, making it an ideal cooling solution for industrial applications. With its advanced heat exchange technology, energy-efficient design, and easy maintenance features, the HP7I sets a benchmark for excellence in thermal management.