1. Introduction
This manual provides essential instructions for the safe installation, operation, and maintenance of your Sylvania Cool White Fluorescent Tube. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
Always observe the following safety precautions:
- Electrical Hazard: Ensure power is OFF at the circuit breaker before installation, removal, or maintenance.
- Fragile Material: Fluorescent tubes are made of glass. Handle with care to prevent breakage.
- Mercury Content: This product contains mercury. Dispose of in accordance with local, state, and federal laws. Do not break the bulb.
- Compatibility: Use only with compatible fluorescent fixtures and ballasts.
- Indoor Use Only: This bulb is designed for indoor applications.
- Temperature: Do not operate in temperatures outside the recommended range for fluorescent lighting.
3. Product Features
The Sylvania Cool White Fluorescent Tube offers reliable illumination with the following characteristics:
- Color/Finish: Cool White Deluxe
- Color Temperature: 4,100 Kelvin (K)
- Average Lifetime: 18,000 hours
- Color Rendering Index (CRI): 87
- Light Output: 2100 Lumens
- Shape: U-Bend (T12)
- Base Type: G13
4. Technical Specifications
| Specification | Value |
|---|---|
| Brand | SYLVANIA |
| Model Name | Sylvania, 1 Pack, Cool White |
| Part Number | 24004 |
| Light Type | Fluorescent |
| Special Feature | U-Bend |
| Wattage | 40 Watts |
| Bulb Shape Size | T12 |
| Bulb Base | G13 |
| Light Color | Cool White |
| Voltage | 120 Volts |
| Color Temperature | 4100 Kelvin |
| Brightness | 2100 Lumens |
| Material | Glass |
| Indoor/Outdoor Usage | Indoor |
| Average Life | 18000 Hours |
| Color Rendering Index | 87 |
| Item Weight | 1.12 ounces |
| Package Dimensions | 23.46 x 8.43 x 2.76 inches |
5. Setup & Installation
Follow these steps to safely install your fluorescent tube:
- Power Off: Before beginning, ensure the power to the fixture is completely turned off at the circuit breaker. This is crucial for safety.
- Remove Old Bulb (if applicable): If replacing an existing bulb, carefully twist the old fluorescent tube 90 degrees and gently pull it out of the lampholders. Dispose of the old bulb properly according to local regulations.
- Inspect Fixture: Check the fixture's lampholders for any damage or corrosion. Ensure they are clean and in good working order.
- Insert New Bulb: Align the pins on both ends of the new Sylvania fluorescent tube with the slots in the lampholders. Gently push the tube into the lampholders until the pins are fully seated.
- Rotate Bulb: Once seated, rotate the tube 90 degrees until it locks securely into place. Do not force the bulb.
- Power On: Restore power to the fixture at the circuit breaker.
- Test: Turn on the light switch to confirm proper operation.

Figure 1: Sylvania Cool White Fluorescent Tube (U-bend shape). This image shows the overall U-shaped design of the fluorescent tube with pins visible at both ends.

Figure 2: Close-up view of the Sylvania fluorescent tube label. The label displays "SYLVANIA COOL WHITE DELUXE 40W FB40/CWX/6 CANADA (Hg)" indicating brand, color, wattage, model code, country of origin, and mercury content.
6. Operating Instructions
Operating the Sylvania Cool White Fluorescent Tube is straightforward:
- Ensure the bulb is correctly installed in a compatible fixture.
- Turn on the electrical switch connected to the fixture. The bulb will illuminate.
- To turn off the light, simply switch off the electrical switch.
Fluorescent tubes may take a moment to reach full brightness, especially in cooler environments.
7. Maintenance
Minimal maintenance is required for your fluorescent tube:
- Cleaning: Periodically, with the power OFF, gently wipe the tube with a soft, dry, lint-free cloth to remove dust and debris. Do not use liquid cleaners directly on the bulb.
- Replacement: Replace the tube when it begins to flicker excessively, fails to light, or reaches the end of its rated average lifetime. Always ensure power is OFF before replacing.
- Disposal: Due to mercury content, dispose of used fluorescent tubes at designated recycling centers or according to local hazardous waste guidelines. Do not place in regular household trash.
8. Troubleshooting
If your fluorescent tube is not functioning correctly, consider the following common issues:
- Bulb Does Not Light:
- Check if the power switch is ON.
- Verify the circuit breaker is not tripped.
- Ensure the bulb is correctly seated and rotated in the lampholders.
- The bulb may be at the end of its life and needs replacement.
- The fixture's ballast may be faulty. Consult a qualified electrician if suspecting ballast issues.
- Flickering:
- Flickering can occur when the bulb is new or in cold environments, and should stabilize.
- Excessive flickering may indicate the bulb is nearing its end of life.
- Ensure the bulb is securely seated in the lampholders.
- A faulty ballast can also cause flickering.
- Dim Light Output:
- Dust accumulation on the bulb can reduce light output. Clean the bulb as described in the Maintenance section.
- The bulb may be aging and losing brightness.
If troubleshooting steps do not resolve the issue, contact customer support or a qualified electrician.
9. Warranty & Support
Warranty: This product is covered by a warranty "As labelled." Please refer to the product packaging or contact Sylvania customer service for specific warranty details.
Customer Support: For further assistance, technical support, or inquiries, please visit the official SYLVANIA website or refer to the contact information provided on the product packaging.
You can also visit the SYLVANIA Store on Amazon for more product information.