Description
Product Overview
Maintain crystal-clear, bacteria-free water in your pool or spa with the iFJF 6472-841 UV Replacement Bulb. This high-output ultraviolet lamp is designed for ClearRay XL water sanitization systems, using UV-C light to neutralize bacteria, viruses, algae, and other microorganisms without chemicals. Compatible with 6472-857 bulb specifications, it's the essential replacement to keep your UV sanitizer operating at peak efficiency.
UV bulbs lose effectiveness over time — even if they still glow, their germicidal output drops significantly after 12 months of use. Replacing your UV bulb annually ensures your ClearRay system continues to provide effective, chemical-free water treatment that's gentle on skin and eyes.
Key Features
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UV-C Germicidal Output: Emits 254nm wavelength UV-C light proven to neutralize 99.9% of waterborne pathogens
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ClearRay XL Compatible: Direct replacement for ClearRay XL pool and spa UV sanitization systems
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Cross-Compatible: Replaces both 6472-841 and 6472-857 bulb specifications
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Long Service Life: Rated for approximately 9,000 hours of continuous operation (about 12 months)
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Easy Installation: Standard 4-pin base — unplug old bulb, plug in new one
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Chemical-Free Sanitation: Reduces chlorine/bromine demand by destroying microorganisms before they multiply
📋 Compatibility
| Compatible Systems |
|---|
| ClearRay XL UV Sanitization System |
| 6472-841 replacement applications |
| 6472-857 replacement applications |
| Pool and spa UV water treatment systems using 4-pin UV-C lamps |
📐 Specifications
| Specification |
Value |
| Part Numbers |
6472-841 / 6472-857 |
| Lamp Type |
UV-C Germicidal (254nm) |
| Base Type |
4-Pin (standard UV lamp base) |
| Rated Life |
~9,000 hours |
| Application |
Pool & spa UV water sanitization |
Why Replace Your UV Bulb Annually?
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Declining Output: UV-C output drops 30-40% after 9,000 hours — your water isn't being properly sanitized even if the bulb glows
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Algae Prevention: A strong UV system prevents algae blooms before they start, reducing chemical usage and shock treatments
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Health & Safety: UV sterilization kills chlorine-resistant pathogens like Cryptosporidium that can survive in chemically treated water
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Equipment Protection: A properly functioning UV system prevents biofilm buildup in plumbing and equipment
Installation Instructions
- Turn off power to the UV sanitizer at the circuit breaker
- Allow the bulb to cool for 15 minutes if recently operated
- Remove the UV chamber cover according to manufacturer instructions
- Carefully unplug the old bulb from its 4-pin socket
- DO NOT touch the new bulb glass with bare hands — use the included sleeve or clean gloves
- Insert new bulb into socket and reassemble chamber cover
- Restore power and verify operation
❓ Frequently Asked Questions
Q: How often should I replace this UV bulb?
A: UV bulbs should be replaced every 12 months (approximately 9,000 hours of operation). Even if the bulb still glows, its germicidal UV-C output drops significantly after one year.
Q: Does this fit my ClearRay XL system?
A: Yes. This 6472-841 bulb is designed as a direct replacement for ClearRay XL UV sanitization systems used in pools and spas.
Q: What's the difference between 6472-841 and 6472-857?
A: These are cross-compatible bulb specifications. This replacement bulb meets both 6472-841 and 6472-857 requirements.
Q: Can I touch the bulb with my bare hands?
A: NO. Oils from your skin create hot spots on the quartz glass that can cause premature failure. Always handle by the ceramic base or use clean gloves.
Q: Will this reduce my chlorine usage?
A: Yes. UV sterilization neutralizes microorganisms before they can multiply, reducing the chlorine demand by 25-50% depending on bather load and environmental conditions.
