PSC Burner Motor for use with Beckett AF/AFG/CF375 Burner

R.W. Beckett 21805U – PSC Burner Motor for AF, AFG, and CF375 Series

The Beckett 21805U is a high-performance permanent split capacitor (PSC) burner motor engineered for use with Beckett AF, AFG, and CF375 oil burner models. Designed to deliver combustion air and operate the CleanCut® pump assembly, this motor is optimized for reliability and service life in both residential and light commercial oil burner applications.

This direct OEM replacement motor features a compact NEMA 48M frame and precision-balanced components for consistent operation under continuous-duty conditions. It is fully compatible with Beckett blower wheels and includes a manual reset thermal protector for added safety in the field.

Contractor-Grade Features

• ✅ PSC Motor Design – Permanent split capacitor motor reduces power consumption and operates at a lower temperature than shaded pole motors.
• ✅ Manual Reset Thermal Overload Protection – Integrated safety mechanism protects against motor overheating and premature failure.
• ✅ Ball Bearing Support – High-load-capacity sealed ball bearings allow for horizontal or vertical shaft orientation and longer service intervals.
• ✅ NEMA 48M Frame – Standardized mounting frame ensures proper alignment and fit for Beckett burners and compatible systems.
• ✅ High-Speed Operation – Rated at 3450 RPM for optimal combustion air performance and proper oil atomization.

Technical Specifications

• Motor Type: PSC (Permanent Split Capacitor)
• Horsepower: 1/7 HP
• Speed: 3450 RPM
• Voltage Options: 115V/60Hz or 220-240V/50-60Hz
• Mounting Frame: NEMA 48M
• Dimensions: 4.56″ (L) x 3.93″ (W) nominal
• Application: Beckett AF/AFG/CF375 burners with CleanCut fuel pumps and blower assemblies

Installation Considerations

Motor replacement should be conducted by qualified HVAC or oil service technicians familiar with burner motor alignment and electrical safety practices. Ensure the correct rotation (CW or CCW) is verified prior to operation. All electrical connections should meet NEC and local code requirements. Capacitor must be properly sized and installed per OEM burner specifications.

The motor ships with a universal shaft and factory-installed leads for easy field wiring. Reuse of existing mounting hardware is common, though motor bracket compatibility should be confirmed prior to installation.

Intended Use and System Integration

This motor is an OEM-grade replacement for Beckett AF, AFG, and CF375 oil burner assemblies. It is designed to drive both the blower wheel and CleanCut oil pump in standard heating systems. Applicable to both new unit installs and service retrofits in boilers, furnaces, and pressure-fired water heaters operating with No. 2 fuel oil or approved renewable blends.

Included Features

• ✅ Direct-drive shaft for blower and fuel pump operation
• ✅ Factory-wired leads with strain relief
• ✅ Ball bearing construction for extended runtime reliability
• ✅ Thermal overload with manual reset
• ✅ Compatible with horizontal or vertical mounting orientations

Contractor Note

Always verify motor amperage and line voltage before commissioning. Confirm blower wheel balance and oil pump shaft alignment after installation. Use only specified run capacitor for correct startup torque and performance.