Introduction
This instruction manual provides essential information for the safe and effective use, installation, and maintenance of your BAYCO 120-Volt 13-Watt Fluorescent Bulb, model SL-103. Please read this manual thoroughly before installation and retain it for future reference.
Safety Information
WARNING: Risk of Electric Shock or Injury.
- Always disconnect power to the fixture before installing or replacing the bulb.
- Ensure your hands are dry when handling electrical components.
- Do not use this bulb in fixtures not designed for fluorescent bulbs or with incompatible wattage/voltage.
- Handle the bulb carefully to avoid breakage. If a bulb breaks, ventilate the area and clean up carefully according to local regulations for mercury-containing products.
- Using a different type of bulb than specified for your fixture may adversely affect its operation or cause damage.
Product Overview
The BAYCO SL-103 is a 13-watt fluorescent replacement bulb designed for specific BAYCO fluorescent models. It provides bright, white light suitable for various applications.

Figure 1: BAYCO 120-Volt 13-Watt Fluorescent Bulb, model SL-103. This image shows the tubular shape of the bulb and its GX53 base, ready for installation.
This bulb is compatible with the following BAYCO fluorescent models: 503, 507, 520, 550, 563, 651, 676, 677, 821, 825, 826, 827, 904, 907, 920C, 935, 936, 964, and 8907.
Setup and Installation
- Power Disconnection: Before beginning, ensure the power supply to the light fixture is completely turned off at the circuit breaker or by unplugging the fixture.
- Allow Cooling: If replacing an existing bulb, allow the old bulb to cool down completely before handling.
- Remove Old Bulb: Carefully remove the old fluorescent bulb from its socket. Note the orientation and connection type for proper replacement.
- Insert New Bulb: Align the pins of the new BAYCO SL-103 bulb with the corresponding slots in the fixture's socket. Gently push and twist (if applicable to the socket type) until the bulb is securely seated. Do not force the bulb into the socket.
- Verify Compatibility: Confirm that the bulb is the correct type and wattage for your fixture as specified by the fixture's manufacturer.
- Restore Power: Once the bulb is securely installed, restore power to the fixture.
- Test Functionality: Turn on the light switch to verify that the new bulb is functioning correctly.
Operating Instructions
The BAYCO SL-103 fluorescent bulb operates like a standard light bulb. Once installed in a compatible fixture and power is supplied, it can be turned on and off using the fixture's switch.
- Ensure the fixture is connected to a 120-volt power source.
- Use the designated switch on your fixture to control the light.
Maintenance
The BAYCO SL-103 fluorescent bulb requires minimal maintenance. Regular cleaning and proper handling will help ensure its longevity.
- Cleaning: Periodically, with the power off and the bulb cool, gently wipe the bulb with a soft, dry cloth to remove dust and debris. Do not use liquid cleaners directly on the bulb.
- Replacement: Replace the bulb when it reaches the end of its lifespan or if it becomes damaged. Follow the installation steps for replacement.
- Disposal: Fluorescent bulbs contain small amounts of mercury and should be disposed of according to local environmental regulations. Do not dispose of in regular household trash.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. |
|
|
| Bulb flickers. |
|
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Specifications
- Model: SL-103
- Brand: BAYCO
- Light Type: Fluorescent
- Wattage: 13 Watts
- Voltage: 120 Volts
- Color Temperature: 6500 Kelvin
- Light Color: White
- Bulb Shape Size: T (Tubular)
- Bulb Base: GX53
- Special Feature: Eye-Friendly
- Dimensions: Approximately 2.88 x 2 x 25 inches
- Item Weight: Approximately 0.81 ounces
- Indoor/Outdoor Usage: Outdoor (as per product specifications)
Warranty and Support
This BAYCO SL-103 Fluorescent Bulb comes with a 90-day limited warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage resulting from improper installation, misuse, abuse, or natural wear and tear.
For warranty claims or technical support, please contact BAYCO customer service. Refer to your product packaging or the official BAYCO website for the most current contact information.
For more information about BAYCO products, visit the official BAYCO Store.




