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New Louis Allis Electric Motor Installation at a Wyoming Fertilizer Plant

New Louis Allis Electric Motor Installation at a Wyoming Fertilizer Plant


The following study examines the installation and performance of Louis Allis’s new Electric Motor that is currently utilized at a fertilizer plant in Wyoming. The motor is rated at 800 HP, 1200 RPM, 4160 volts, 7210DS frame, WPIIX enclosure, 1.0 service factor (SF), Class F insulation, 3-phase, and 60 Hertz. It is also equipped with RTD's (Resistance Temperature Detectors), space heaters, and sleeve bearings. The case study outlines the context, installation process, challenges faced, and the motor's subsequent performance in the unique environment of a fertilizer plant.


This motor was developed for its suitability to the demanding environment of industrial use. The motor's high horsepower and voltage rating made it an ideal choice for driving heavy machinery used in the fertilizer production process. The installation was part of a planned upgrade to enhance the plant's production capabilities and improve overall efficiency in the fertilizer manufacturing process.

Installation Process:

Sizing and Compatibility

Prior to installation, a thorough analysis was conducted to ensure the motor's compatibility with the fertilizer plant's specific operational requirements. The motor's 7210DS frame and Class F insulation were well-suited to handle the high loads and harsh conditions often encountered in fertilizer production.

Electrical Connection

Given the motor's 4160-volt, 3-phase configuration, certified electricians ensured the motor was correctly integrated into the plant's electrical system. The connections were rigorously inspected to meet stringent safety standards and codes, which are crucial in a hazardous environment like a fertilizer plant.

Cooling System

The WPIIX (Weather Protected Type II) enclosure was chosen to protect the motor from environmental factors and ensure efficient heat dissipation. Space heaters were installed to prevent condensation during shutdowns, as temperature control is vital for preventing corrosion in the fertilizer plant's corrosive atmosphere.

Bearing System

The motor was equipped with sleeve bearings, known for their durability and suitability for high-load applications. An aggressive lubrication and maintenance schedule was established to ensure the longevity of the bearings, given the challenging conditions of the fertilizer plant.

Monitoring and Safety

The inclusion of RTD's (Resistance Temperature Detectors) enabled continuous monitoring of critical motor components. This allowed for early detection of overheating that could lead to motor failure, a crucial safety measure in the plant's operations.

Challenges Faced:

During the installation process, several challenges were encountered, which were specific to the fertilizer plant environment:

Corrosion Resistance: The corrosive atmosphere in the fertilizer plant required additional protective measures to prevent corrosion of the motor and its components.

Environmental Compliance: The installation had to adhere to strict environmental regulations associated with the handling and operation of electrical equipment within the fertilizer plant.

Vibration Control: Achieving the correct alignment and balance with the connected machinery proved challenging due to elevated vibration levels associated with the industrial process.

Space Limitations: Space constraints within the plant necessitated careful planning and engineering to accommodate the motor's size and ventilation requirements.


Since its installation in the plant, the motor has exceeded expectations in terms of performance and reliability:

Efficiency: The motor's high-efficiency design has contributed to cost savings in energy consumption, an essential factor for the energy-intensive operations of the fertilizer plant.

Reliability: The motor has operated continuously without any major issues, thanks to the robust bearing system and the continuous temperature monitoring enabled by RTD's.

Safety: The motor's safety features have played a vital role in preventing potential hazards by shutting it down promptly in case of abnormal conditions.

Maintenance: Scheduled maintenance and rigorous lubrication of the sleeve bearings have extended their lifespan, reducing maintenance costs and minimizing downtime.

In conclusion, this new electric motor,  has proven to be an invaluable asset to the facility. Its reliability, efficiency, and safety features have significantly improved production processes, enhanced safety, and minimized downtime, making it a strategic and successful investment for the fertilizer plant.

Industry - Agriculture


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