Instant Cooldown: No, no, no. Thermodynamics does not work that way, and even with thermal superconductors, neutrino pumps, and black holes, thermodynamics still doesn’t work that way. Stay out of the red zone.
(Also, bearing in mind the proclivities of the manufacturers of much of this equipment, the red line on the dial is where it will explode, not 10% before where it will explode on the assumption that many of the operators will be gung-ho idiots. Yes, there’s a safety margin to cover manufacturing variances, and suchlike. There is not one to protect you from yourself, as lying to you for your own good is not in their paradigm, belike.)
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