Quote:
Originally Posted by AC_Hacker
I look closer, and I see a tiny button that is labeled "TEST KEY" (blue circle), which I suppose is the Chinese term that means "PUSH ME". So, I push it...
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Most units seem to have those in one form or another. They are useful for firing the compressor up from outside while you pump it down.
Have you been *really* lucky and got a unit with its factory gas charge still in it?