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Originally Posted by martinyoung
Just as a little side note. What the factory used to do was after the switch was built, and new switches are custom built for the customer, each cabinet would be sealed in a large plastic bag and left running for 48 hours. There was no ventilation in this bag and it got very hot in the bag. Anything that failed due to heat was replaced and if nothing failed the system was palletized and shipped.
They don't do this any more but it is still the same equipment built to the same standard.
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Yes, this test was performed at one of our customers: they were repairing the ceiling, and in order to avoid dust falling onto the Definity, they just packed it with plastic film. The switch passed the test without a hitch, but it was REAL hot. Only the cheap CD player that was used for on-hold music failed...