1. Introduction
This manual provides essential information for the safe installation, operation, and maintenance of your Philips 175W ED28 E39 Mercury Vapor Light Bulb. This high-intensity discharge (HID) bulb is designed for specific lighting applications, offering a clear finish and a cool white light with a color temperature of 6800K and 7400 lumens output. It features an ED28 bulb shape and an E39 Mogul Screw base.
Figure 1: Philips 175W ED28 E39 Mercury Vapor Light Bulb. This image shows the clear bulb with its E39 mogul screw base.
2. Safety Information
WARNING: Mercury vapor lamps contain mercury. Dispose of lamps in accordance with local, state, and federal laws. For more information, visit EPA.gov/mercury.
- Always turn off power to the fixture and allow the bulb to cool completely before handling or replacing.
- Do not operate this bulb in an enclosed fixture unless the fixture is specifically designed for HID lamps.
- Avoid touching the bulb glass with bare hands. Oils from skin can create hot spots and reduce bulb life. Use a clean cloth or gloves if necessary.
- Ensure the fixture is compatible with a 175W mercury vapor bulb and has the correct E39 mogul screw base.
- Do not use this bulb with dimmers or electronic timers unless specifically rated for HID lamps.
- In case of bulb breakage, ventilate the area and carefully clean up broken glass and mercury residue according to local guidelines.
3. Setup and Installation
- Power Off: Before installation, ensure the power supply to the lighting fixture is completely turned off at the circuit breaker or fuse box.
- Cool Down: If replacing an existing bulb, allow the old bulb to cool down completely before touching it. HID bulbs can remain extremely hot for an extended period after being turned off.
- Remove Old Bulb: Carefully unscrew the old bulb from the E39 mogul screw base.
- Inspect Fixture: Check the fixture for any damage or wear. Ensure the socket is clean and free of debris.
- Install New Bulb: Gently screw the Philips 175W ED28 E39 Mercury Vapor Light Bulb into the E39 mogul screw base. Do not overtighten. Ensure it is seated firmly.
- Power On: Restore power to the fixture.
Note: This bulb requires a compatible ballast to operate. Ensure your fixture has the correct ballast for a 175W mercury vapor lamp.
4. Operating Instructions
Upon initial power-up, mercury vapor lamps require a warm-up period to reach full brightness and stable color. This process typically takes several minutes. During this time, the light output and color may change as the lamp stabilizes.
- Warm-up Time: Expect the bulb to take approximately 5-7 minutes to reach full light output and color stability.
- Restrike Time: If the lamp is turned off, it cannot be immediately restarted. It requires a cool-down period (typically 5-10 minutes) before it can be reignited. Attempting to restart too soon may prevent it from lighting or shorten its lifespan.
- Operating Position: This bulb is designed for universal burn position, meaning it can be operated in any orientation.
5. Maintenance
- Cleaning: Periodically, when the power is off and the bulb is cool, gently wipe the exterior of the bulb with a clean, dry, lint-free cloth to remove dust and debris. Do not use liquid cleaners.
- Replacement: The average lifetime of this bulb is 24,000 hours. Replace the bulb when it reaches the end of its useful life, or if it exhibits signs of failure such as flickering, dimming, or failure to ignite.
- Disposal: Due to mercury content, dispose of old bulbs according to local environmental regulations. Do not discard with regular household waste.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. | No power to fixture, incorrect bulb installation, faulty ballast, end of bulb life. | Check circuit breaker. Ensure bulb is screwed in correctly. Consult an electrician to check ballast. Replace bulb if at end of life. |
| Bulb flickers or is dim. | Bulb nearing end of life, incorrect voltage, faulty ballast. | Replace bulb. Verify correct voltage supply. Consult an electrician to check ballast. |
| Bulb turns off and won't restart immediately. | Normal restrike delay for HID lamps. | Allow 5-10 minutes for the bulb to cool down before attempting to restart. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Philips |
| Model Number | 046677319656 |
| Light Type | Mercury Vapor (HID) |
| Wattage | 175W |
| Voltage | 130V (Accepted voltage frequency: 100 to 240 Volts and 50 Hertz to 60 Hertz) |
| Bulb Shape Size | ED28 |
| Bulb Base | E39 Mogul Screw |
| Color/Finish | Clear |
| Light Color | Cool White / Daylight White |
| Color Temperature | 6800K |
| Lumens (Light Output) | 7400 Lumens |
| CRI (Color Rendering Index) | 20 |
| Average Lifetime | 24,000 hours |
| Beam Angle | 360 Degrees |
| Material | Copper |
| Item Weight | 0.01 Ounces |
8. Warranty and Support
Specific warranty details for this Philips product are not provided in this manual. For warranty information, technical support, or service inquiries, please contact Philips customer support directly or refer to the documentation provided with your purchase. You may also visit the official Philips website for further assistance.
