Little Giant 540005 – CP1-115 Pump

For high-demand cooling environments, the Little Giant 540005 CP1-115 Pump is a field-proven 1/70 HP replacement unit engineered for evaporative cooler pump applications up to 7,500 CFM. This 115V centrifugal pump delivers a flow rate of 307 GPH at 1 foot of head, ensuring consistent water distribution across cooling media. Built with a corrosion-resistant one-piece steel motor shaft and moisture-proof windings, it is designed to withstand the humid, high-mineral environments typical of residential and commercial swamp coolers. The heavy-duty, fan-cooled motor features oversized sleeve bearings with a large oil reservoir for extended runtime. For simplified maintenance, the snap-off volute and integrated mesh debris screen allow for quick clearing of scale and sediment. This CP series evaporative pump also includes a 90-degree barbed elbow compatible with 5/8" and 3/4" I.D. flexible tubing, making it a versatile OEM replacement water pump for contractors and technicians.

• Maximum Airflow Capacity: Optimized for systems up to 7,500 CFM, providing reliable saturation for high-volume cooling units.
• Debris Management: Includes a removable mesh screen and snap-off volute, minimizing downtime caused by scale buildup.
• Industrial Construction: Features a flame-retardant housing and UR-listed motor components for mechanical safety and longevity.
• Installation Ready: Supplied with a 4-foot power cord, 3-prong grounded plug, and a metal support bracket for immediate deployment.
• Versatile Application: Dual-rated for 115V/127V, serving as an ideal utility water transfer pump for laboratory setups and display fountains.

Common Questions:

What is the maximum lift for this model?
The CP1-115 has a shut-off head of 9.5 feet, making it effective for most standard residential and light commercial evaporative coolers.

Can this pump be used in chemical or saltwater applications?
This pump is specifically designed for water-transfer and recirculating cooling; it features a steel shaft and plastic volute intended for freshwater use and should not be used with flammable or corrosive liquids.

Does this unit include a thermal protector?
Yes, the motor is fan-cooled and includes thermal overload protection to prevent damage during restricted flow or high-ambient temperature conditions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.