Product Overview
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Leeson General Purpose Motor, Model C6T11FB2F. This motor is designed for commercial and industrial applications, featuring a Totally Enclosed, Fan-Cooled (TEFC) enclosure suitable for dusty or damp environments.

Image: Leeson General Purpose Motor, Model C6T11FB2F. This image displays the motor from a side view, showing its blue casing, the Leeson branding, and the specification plate. A warning label is visible on the right side of the motor.
Key Features:
- TEFC Enclosure: Totally enclosed, external fan-cooled motor for use in dusty or damp environments.
- Rated Speed: Operates at 1,200 RPM.
- Voltage & Phase: 208-230/460V input voltage, three phase, 1/2hp.
- Certifications: UL Listed and CSA certified for quality assurance.
Important Safety Information
Read and understand all safety instructions before installing, operating, or performing maintenance on this motor. Failure to comply with these instructions may result in serious injury, property damage, or death.
⚠ WARNING
- Failure to properly operate & ground this motor may cause serious injury to property and/or personnel. Read operating instructions.
- ⚠Disconnect power before removing terminal box cover and/or performing maintenance. Ground in accordance with National Electric and local codes.
- ⚠Moving parts can crush and cut. Keep hands clear.
Setup and Installation
Proper installation is critical for the motor's performance and longevity. Ensure all local and national electrical codes are followed.
Mounting:
This motor features a rigid mounting design. Secure the motor firmly to a stable, level surface using appropriate fasteners. Ensure adequate ventilation around the motor to prevent overheating.
Electrical Connection:
- Voltage: The motor is designed for 208-230/460V, three-phase power. Verify your power supply matches these requirements.
- Wiring: Refer to the wiring diagram located inside the motor's terminal box cover for correct connections. Ensure all connections are tight and insulated.
- Grounding: Always ground the motor properly to prevent electrical shock. Follow all applicable electrical codes for grounding.
- Overload Protection: Install appropriate overload protection devices to protect the motor from damage due to excessive current.
Operating Instructions
Once installed, the motor is ready for operation. Always ensure the motor is properly connected and secured before starting.
- Initial Start-up: Before the first start, manually check that the motor shaft rotates freely.
- Direction of Rotation: The motor's standard rotation is Counter-Clockwise (C.C.W.) when facing the lead end. The wiring diagram provides instructions for interchanging leads (T5 & T8) for Clockwise (C.W.) rotation if needed.
- Environmental Conditions: The TEFC design allows operation in dusty or damp environments, but avoid submerging the motor or exposing it to corrosive liquids.
- Monitoring: During operation, periodically check for unusual noises, excessive vibration, or overheating.
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your Leeson motor. Always disconnect power before performing any maintenance.
- Cleaning: Keep the motor's exterior clean, especially the cooling fins and fan cover, to ensure efficient heat dissipation.
- Lubrication: Consult the motor's nameplate or specific Leeson documentation for lubrication requirements. Many general-purpose motors are permanently lubricated, but some may require periodic greasing.
- Inspections: Periodically inspect electrical connections for tightness and signs of wear. Check mounting bolts for security.
- Bearing Check: Listen for unusual bearing noises. If bearings become noisy, they may require replacement by a qualified technician.
Troubleshooting
This section provides guidance for common issues. For complex problems, contact a qualified electrician or motor technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No power supply; Incorrect wiring; Overload tripped; Seized bearings. | Check power source and circuit breaker; Verify wiring against diagram; Reset overload; Inspect bearings for free rotation. |
| Motor overheats | Overload condition; Insufficient ventilation; Incorrect voltage; Bearing issues. | Reduce load; Clear obstructions around motor; Verify correct voltage; Check and replace bearings if necessary. |
| Excessive vibration | Improper mounting; Unbalanced load; Worn bearings; Bent shaft. | Ensure secure and level mounting; Balance load; Replace worn bearings; Consult technician for bent shaft. |
Specifications
Detailed technical specifications for the Leeson General Purpose Motor, Model C6T11FB2F.
| Specification | Value |
|---|---|
| Brand | Leeson |
| Model Number | C6T11FB2F |
| Item Weight | 26 Pounds |
| Horsepower | 0.5 hp |
| Speed | 1200 RPM |
| Voltage | 208-230/460V |
| Frequency | 60Hz |
| Phase | 3 Phase |
| Frame | 56 Frame |
| Mounting Type | Rigid Mounting |
| Enclosure Type | TEFC (Totally Enclosed, Fan-Cooled) |
| Material | Iron |
| Date First Available | August 22, 2013 |
Warranty and Support
Information regarding specific warranty terms or direct customer support contacts for this Leeson motor was not available in the provided product data. For warranty claims or technical support, please refer to the official Leeson website or contact your authorized Leeson distributor.