Dayton
Dayton 20RK79 condenser fan motor 1 hp three-phase 850 RPM 208-230/460V 56YZ frame
Three-phase condenser fan motor delivers 1 hp at 850 RPM with 208-230/460V operation and 56YZ frame
- Three-phase power delivers efficient 1 hp output at 850 RPM
- Dual-voltage 208-230/460V AC suits multiple supply configurations
- 56YZ frame with belly-band mount fits standard condenser openings
- Inverter-rated design allows variable-speed control without added stress
- Class F insulation handles 70 °C ambient for continuous duty
Industrial condenser fan motor
The Dayton 20RK79 is a three-phase condenser fan motor rated at 1 hp and 850 RPM. It operates on 208-230/460V AC at 60 Hz with a 56YZ frame. The motor draws 5.0 amps at low voltage and 2.5 amps at high voltage, suited for continuous duty in HVAC and refrigeration equipment.
Upgrade from single-phase or lower output units
This motor replaces single-phase alternatives where three-phase power is available and higher efficiency is required. The jump is worth it when the application demands continuous operation at up to 70 degrees C ambient temperature and inverter-rated performance for variable speed control. Thermal protection via T-Stat and Class F insulation support long service life under demanding conditions.
Fits belly-band mounts with reversible rotation
The open air-over enclosure requires external airflow for cooling and mounts via belly band on a 56YZ frame. Shaft rotation is field-selectable between CW and CCW to match existing fan blades. Inverter-rated design frees up control options for speed modulation. Ensure the driven load matches the 1 hp output and 850 RPM nameplate speed for proper operation.
Highlights
- Three-phase power delivers efficient 1 hp output at 850 RPM
- Dual-voltage 208-230/460V AC suits multiple supply configurations
- 56YZ frame with belly-band mount fits standard condenser openings
- Inverter-rated design allows variable-speed control without added stress
- Class F insulation handles 70 °C ambient for continuous duty
Specifications
| Brand | DAYTON |
|---|
Questions about this item
What belly-band diameter does the 56YZ frame motor need to clamp onto?
The motor uses a NEMA 56YZ frame with a belly-band mounting ring; match the band to the motor's 56-frame diameter when ordering the bracket.
How do you wire the dual-voltage motor for 230 V or 460 V three-phase supply?
Configure the nine leads in low-voltage delta for 208-230 V (5.0 A) or high-voltage wye for 460 V (2.5 A); verify rotation is CW/CCW as required before final tightening.
When should the internal thermal protector (T-Stat) be checked or the motor replaced?
Inspect the T-Stat if the motor trips repeatedly at the 70 °C ambient limit; continuous duty and Class F insulation mean replacement is only needed if winding resistance drifts or the protector fails to reset.
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