Replacement UV Light - 15GPM Signature Series
Replacement UV Lamp for Excalibur Signature Series 15 GPM Rack Systems
The Replacement UV Light 15GPM Signature Series (UVS EXWL420C) is the genuine replacement lamp for Excalibur Signature Series 15 GPM rack UV systems. Annual lamp replacement is the most important maintenance step to keep your UV system protecting your water — even if the lamp is still glowing, UV output degrades over time and must be replaced on schedule.
Why Replace Annually?
UV lamps lose approximately 20% of their germicidal output over 9,000 hours of use (roughly one year of continuous operation). A lamp that appears to be working may no longer be delivering the UV dose required to inactivate bacteria, viruses, and protozoan cysts. Annual replacement ensures your system maintains 99.9999% (6-log) destruction of microorganisms year-round.
Specifications
- Model: UVS EXWL420C
- Compatible Systems: Excalibur Signature Series rack 15 GPM UV systems
- Lamp Life: 9,000 hours (annual replacement recommended)
- Replacement lamp only — image for reference
When to Replace
Replace your UV lamp once per year, or when your system's Lightlock alert, UV Concierge app notification, or annual lamp change timer activates. Do not wait for the lamp to burn out — replace on schedule to maintain continuous protection.
Installation
Shut off the system and allow the lamp to cool before handling. Wear gloves — do not touch the lamp glass with bare hands. For step-by-step guidance, visit our System Guide or contact us for support.
✅ Authorized Excalibur Dealer — Genuine OEM replacement lamp (UVS EXWL420C) with manufacturer warranty support.