Fractal Design has uncovered a manufacturing flaw in their Lumen series all-in-one water coolers. The solder used in the aluminium radiator, for example, would react to the coolant. This produces silt, which can become stuck in the cooling block's fins, lowering temperatures.
Fractal Design:
We have discovered an issue with our all-in-one water cooler Lumen. Following user reports of an increase in CPU temperatures, an investigation was started to determine the potential cause.
Our findings conclude that the soldering material used in the aluminum radiator, as well as impurities introduced during manufacturing, may cause a reaction with the chemical composition of the cooling fluid. Over time this may lead to sediment build-up in the circulating liquid getting caught in the fins of the CPU block, causing an increase in temperatures as a result of the blockage. Although Lumen units that are not currently causing temperature issues are safe for continued use, the experience of our users is our main priority. We have therefore decided to halt all Lumen sales globally, until we are satisfied that the quality standards we and our users expect are fully met. In order to address the issue, our teams will be working on a new version with an updated radiator and a new liquid formula, produced following revised processes and guidelines for assembly. With our currently estimated timeline, we are hoping to have new units available as replacements for Lumen owners, as well as substitutes for stock at distributors and resellers; in about six weeks.
A web form for users to request a replacement can be found on our dedicated website, which also provides ongoing updates, timeline and further information. Ticket holders will also receive updates via e-mail.
We sincerely apologize for the inconvenience.
Resources and links:
Fractal Lumen water cooler recall; cooland issue raises CPU temps
