Keep your Blue Lagoon Saltwater UV-C 40W Short running at full performance with this genuine replacement electronics unit (article code EP040021<\/strong>). The electronics \u2014 also known as the ballast or control unit \u2014 regulate the power supply to the UV-C lamp, ensuring optimal lamp performance and a consistent UV output. If your unit’s lamp won’t ignite, flickers, or the device no longer responds, a faulty ballast is the most common cause and this direct replacement will have it working again.<\/p>\n The Blue Lagoon Saltwater UV-C 40W Short is a compact UV-C sanitiser developed specifically for saltwater pools, though it works equally well with chlorinated water. It uses UV-C radiation at a wavelength of 253.7 nm \u2014 the most effective wavelength for destroying bacteria, viruses, moulds, and algae, including resistant organisms such as Legionella and Cryptosporidium. The built-in electronic ballast ensures the Philips T5 40W lamp (365 mm) operates at its optimum intensity at all times. The “Short” design measures approximately 48 cm, making it ideal where installation space is limited.<\/p>\n UV-C systems have two key wear components: the UV lamp itself (typically replaced annually) and the electronics unit (ballast), which can fail after several years of continuous use. Symptoms of a failing ballast include the lamp not starting, intermittent operation, or a burning smell from the unit. Replacing the electronics is far more cost-effective than buying a complete new UV-C system, and this OEM part restores the device to factory specification.<\/p>\n This electronics unit is designed exclusively for the Blue Lagoon Saltwater UV-C Short 40W<\/strong>. It is not compatible with other Blue Lagoon models (Tech, Signal, or non-Short variants). Installation is straightforward \u2014 no specialist tools are required. Simply disconnect the old ballast and connect the replacement using the existing wiring. The unit comes with a Type F (Schuko) plug, standard for European power outlets.<\/p>\n Important:<\/strong> If your Blue Lagoon Saltwater UV-C device is from 2015 or older, the quartz glass sleeve may also need replacing at the same time. Over time, quartz glass can develop micro-cracks or clouding that reduces UV-C transmission, even when the lamp and ballast are in good condition.<\/p>\nWhat Is the Blue Lagoon Saltwater UV-C?<\/h3>\n
Why Replace the Electronics Unit?<\/h3>\n
Compatibility & Installation Notes<\/h3>\n
Technical Specifications<\/h3>\n