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Once it cools, it should function properly again. A lava lamp may overheat in eight to 10 hours, depending upon the bulb and brand of lamp. Use the lamp for less than eight hours at a time for best results, allowing it to cool to room temperature before using it again.
The distributions are nearly the same for the first three CCTs: eight to 10 lamp models are offered with a life rating of 20,000 hours, nine to 13 models have a life rating of 24,000 hours, and nine models have a life rating of 30,000 hours. 1  Figure 6. 2  Figure 7. 3  Figure 8.