Problem karlsuss 2001-02-13 18:32:14: loss of mask vacuum

yjlin at yjlin at
Tue Feb 13 06:32:15 PST 2001

This happens to the 4-inch mask. Vacuum cannot be turned on when the hose is connected, I have to disconnect it, turn on vacuum then put the hose back. But after the mask is locked, the vacuum is lost again.

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