Crompton Lamps Tubular Light Bulb - White - 250W
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Product Information
Full details
This Crompton Lamps 250W Tubular Metal Halide Light Bulb is designed for users looking to upgrade existing mercury or sodium vapor lighting to a bright, crisp white light. Its key benefit is the ease of retrofitting onto existing control gear, offering a confusion-free replacement solution. A caveat is the requirement for an external ignitor and an enclosure with cover glass. This bulb provides long-lasting illumination with UV protection and a universal operating position, making it suitable for various floodlighting applications.
All features
| Colour | White |
|---|---|
| Model Part Number | MHT250WGESDU4K |
| Brand | Crompton Lamps |
Extended Product Information
FAQs
What is the main advantage of this bulb over older types?
The main advantage is its ability to replace older mercury and SON (sodium vapor) lights with a brighter, crisp white light while utilizing the existing control gear, making it an easy and efficient upgrade.
Does this bulb require a special fixture?
It requires a fixture with a GES-E40 (Goliath Edison Screw, 40mm) cap. It also necessitates an external ignitor and an enclosure with cover glass for proper and safe operation.
How long will this bulb last?
The rated life of this bulb is 10,000 hours, which offers a significantly longer operational period compared to many older lighting technologies.
Can I use this bulb outdoors?
Yes, this bulb is suitable for floodlighting applications, which commonly include outdoor areas. Ensure the fixture provides adequate protection from the elements.
Do I need a separate UV filter?
No, the bulb features a special coating to filter out all harmful UV rays, so you do not need to install it in a fitting with additional UV protection.
Can this bulb be installed in any orientation?
Yes, it has a universal operating position, meaning it can be installed and operated correctly in fittings at any angle.
What should I do if the bulb flickers?
Flickering can be due to issues with the ignitor, ballast, or control gear. Ensure all connections are secure and that the control gear is functioning properly. If flickering persists, the control gear may need attention.
Troubleshooting
Bulb does not turn on
Check that the power supply is on and the circuit breaker is not tripped. Verify the bulb is securely screwed into the socket. Ensure the external ignitor is functioning correctly and the control gear is compatible.
Flickering or unstable light
This could indicate an issue with the control gear, ballast, or ignitor. Ensure all connections are secure. If the problem persists, the control gear may need servicing or replacement.
Bulb turns on but gives very dim light
Verify the bulb is the correct wattage (250W) and type (metal halide). Check that the control gear is designed to operate a 250W metal halide lamp and is functioning correctly.
Premature bulb failure
Ensure the bulb is operating in a suitable enclosure with cover glass and that it is not subjected to excessive vibration or temperature fluctuations beyond its specifications.
Pros and Cons
Pros
- Easy upgrade path from older lighting technologies.
- Long operational life reduces maintenance.
- Flexible installation due to universal operating position.
- Built-in UV filtering enhances safety and protection.
- Cost-effective replacement for existing fixtures.
Cons
- Requires an external ignitor.
- Needs an enclosure with cover glass.
- Specific cap type (GES-E40) limits compatibility to certain fixtures.
- Not a direct replacement for all bulb types without considering control gear.
- Metal halide technology may not be suitable for all applications requiring instant on/off.
Setup, Compatibility & Care
Setup:
- Ensure the power to the existing fixture is completely off.
- Verify the fixture is compatible with a 250W metal halide bulb and has the necessary GES-E40 fitting.
- Confirm an external ignitor is present and functional within the fixture's control gear.
- Install the bulb by screwing it into the GES-E40 socket until secure.
- Ensure the fixture is fitted with a cover glass to protect the bulb and comply with safety requirements.
- Reconnect power.
Compatibility:
- Compatible with existing mercury and SON control gear.
- Requires a fixture with a GES-E40 (40mm Goliath Edison Screw) cap.
- Requires an external ignitor.
- Requires an enclosure with cover glass.
Care:
- This bulb is designed for long-term use. No regular user maintenance is typically required.
- Periodically check the fixture and bulb for any signs of damage or excessive dust buildup. Clean the exterior of the fixture and cover glass if necessary, ensuring power is disconnected first.
- Avoid frequent on/off cycling as this can shorten the lifespan of metal halide bulbs.