US Motors
US Motors 6769 Evaporative Cooler Motor 3/4 hp
Drives evaporative coolers with a 3/4 hp split-phase motor at 1,725 RPM on 115 V AC, 56Z frame, continuous duty, auto thermal protection
- 3/4 hp split-phase motor powers evaporative coolers efficiently
- 1,725 RPM single-speed design delivers steady airflow for cooling
- 115 V AC operation with 10.7 A full-load current fits standard circuits
- 56Z frame resilient-ring mounting simplifies installation and reduces vibration
- Auto thermal protection and Class B insulation protect motor during continuous duty
Motor Purpose & Fit
The US Motors 6769 is a single-phase split-phase motor rated at 3/4 hp for evaporative cooler applications. It runs at 115V AC with a nameplate speed of 1,725 RPM and draws 10.7 A at full load. The 56Z frame and resilient-ring mounting suit direct-drive blower assemblies in commercial or residential swamp coolers.
Installation Notes
The open drip-proof enclosure requires a clean, dry mounting location with ambient temperatures no higher than 40 degrees C. Auto thermal protection resets itself after a trip, but blocked airflow or incorrect voltage will cause repeated shutdowns. Verify shaft rotation is clockwise from the shaft end before finalising the belt or coupling alignment.
Who Should Choose This
This unit suits owners replacing a 3/4 hp cooler motor with identical frame, voltage and speed ratings. It is not suitable for 200 V or 208 V supplies, nor for installations demanding a totally enclosed or higher service-factor design. Builders needing variable-speed operation or a different frame size should look elsewhere.
Highlights
- 3/4 hp split-phase motor powers evaporative coolers efficiently
- 1,725 RPM single-speed design delivers steady airflow for cooling
- 115 V AC operation with 10.7 A full-load current fits standard circuits
- 56Z frame resilient-ring mounting simplifies installation and reduces vibration
- Auto thermal protection and Class B insulation protect motor during continuous duty
Specifications
| Brand | U.S. MOTORS |
|---|
Questions about this item
How can I verify the motor is running at the correct 1725 RPM after installation?
Use a non-contact tachometer on the shaft; it should read 1725 RPM under load with the nameplate 10.7 A draw at 115 V AC.
What comes with the motor and what must I supply separately?
The motor ships as a single unit with a 56Z frame and resilient ring mount; you must provide the pulley, belt, wiring, and capacitor if your cooler requires one.
Which voltage version should I choose for a standard US household supply?
This model is rated for 115 V AC, 60 Hz single-phase only; it is not usable at 200 V or 208 V, so select it only for 115 V circuits.
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