1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your Technical Precision E264120MR04C9 Fluorescent Electronic Ballast. This product is designed as a replacement ballast for compatible fluorescent lighting systems operating at 120V. Please read these instructions thoroughly before proceeding with installation or use.
2. Important Safety Information
WARNING: Risk of electric shock. Improper installation or use can result in serious injury or death. Always follow these safety guidelines:
- Disconnect Power: Always turn off power at the circuit breaker or fuse box before installing, servicing, or removing the ballast. Verify that power is off using a voltage tester.
- Qualified Personnel: Installation and servicing should only be performed by a qualified electrician or trained personnel familiar with the construction and operation of the product and the hazards involved.
- Grounding: Ensure the ballast is properly grounded according to national and local electrical codes.
- Wiring: Do not alter or modify the wiring of the ballast or fixture. Ensure all wire connections are secure and insulated.
- Compatibility: Use only with compatible fluorescent lamps as specified by the ballast's ratings.
- Operating Environment: Do not expose the ballast to moisture, extreme temperatures, or corrosive environments.
3. Package Contents
Verify that all components are present and undamaged upon opening the package:
- 1 x Technical Precision E264120MR04C9 Fluorescent Electronic Ballast

Figure 3.1: Front view of the Technical Precision E264120MR04C9 Fluorescent Electronic Ballast, showing its compact design and wiring.
4. Specifications
Key technical specifications for the E264120MR04C9 Ballast:
| Feature | Specification |
|---|---|
| Brand | Technical Precision |
| Model Name | E264120MR04C9 |
| Light Type | Fluorescent |
| Voltage | 120 Volts |
| Wattage | 32 Watts |
| Bulb Shape Size | T8 |
| Special Feature | High Efficiency, Instant On |
| Item Weight | 13.4 ounces |
| Package Dimensions | 7.91 x 2.36 x 1.81 inches |

Figure 4.1: Diagram illustrating the dimensions of the ballast (6 inches length, 1.8 inches width) and its operating voltage of 120 Volts.
5. Setup and Installation
This ballast is intended as a replacement component. Professional installation is highly recommended due to the electrical nature of the product.
Installation Steps:
- Power Disconnection: Before beginning any work, ensure the power supply to the fixture is completely disconnected at the main circuit breaker. Use a voltage meter to confirm no power is present.
- Access Old Ballast: Open the light fixture to gain access to the existing ballast. Note the wiring configuration and take photos if necessary for reference.
- Remove Old Ballast: Carefully disconnect all wires from the old ballast and remove it from the fixture.
- Mount New Ballast: Position the new Technical Precision E264120MR04C9 ballast in the fixture. Secure it using appropriate mounting hardware.
- Wire Connections: Connect the new ballast according to the wiring diagram provided with your light fixture or the original ballast's configuration. Ensure all connections are tight and properly insulated with wire nuts or electrical tape.
- Close Fixture: Carefully close the light fixture, ensuring no wires are pinched.
- Restore Power and Test: Restore power at the circuit breaker. Turn on the light switch to test the new ballast and lamps.

Figure 5.1: Side view of the ballast, highlighting the wiring connections and mounting points.
6. Operation
Once correctly installed, the Technical Precision E264120MR04C9 Fluorescent Electronic Ballast operates automatically. It provides the necessary voltage and current to start and maintain the fluorescent lamps in your fixture. The ballast is designed for instant-on functionality and high efficiency.
7. Maintenance
The E264120MR04C9 ballast requires minimal maintenance. Regular inspection of the lighting fixture and its components is recommended.
- Periodic Inspection: Periodically inspect the ballast and wiring for any signs of damage, overheating, or loose connections.
- Cleaning: Ensure the ballast and fixture are kept free from dust and debris, which can impede heat dissipation. Always disconnect power before cleaning.
- Lamp Replacement: If lamps fail, replace them with new, compatible fluorescent lamps. A faulty lamp can sometimes cause stress on the ballast.
- Professional Service: If any issues are detected that cannot be resolved through basic troubleshooting, contact a qualified electrician for service.
8. Troubleshooting
If your fluorescent fixture is not operating correctly, consider the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lamps do not light up | No power to fixture, faulty lamps, incorrect wiring, faulty ballast | Check circuit breaker/fuse. Replace lamps. Verify wiring connections. If lamps and wiring are good, ballast may need replacement. |
| Lamps flicker or are dim | Old/faulty lamps, incorrect lamp type, loose connections, ballast nearing end of life | Replace lamps. Ensure correct lamp type is used. Check all wiring connections. If problem persists, consider ballast replacement. |
| Ballast hums loudly | Loose mounting, incompatible lamps, internal ballast issue | Ensure ballast is securely mounted. Verify lamp compatibility. If humming is excessive and persistent, ballast may be faulty. |
| Lamps take a long time to start | Old/faulty lamps, low temperature, ballast issue | Replace lamps. Ensure operating environment is within recommended temperature range. Ballast may be failing. |
If troubleshooting steps do not resolve the issue, contact customer support or a qualified electrician.
9. Warranty Information
Technical Precision products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to your E264120MR04C9 Fluorescent Electronic Ballast, please refer to the documentation included with your purchase or visit the official Technical Precision website. Keep your proof of purchase for warranty claims.
10. Customer Support
For further assistance, technical inquiries, or support regarding your Technical Precision E264120MR04C9 Fluorescent Electronic Ballast, please contact Technical Precision customer service. Contact information can typically be found on the product packaging or the official Technical Precision website.





