2010/1/6 frank theriault <knarftheria...@gmail.com>:
>
> Why put in a plastic bag while warming up?

to prevent condensation - move a cold item into warm, moisture laden
air, water will condensate on the cold item - this is actually a
sensible thing to do because you wont't have to wait for the water to
evaporate before you fire up the unit again

cheers
ecke

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