Tuesday, September 26, 2006

Leak from the McPhonsen spectrometer

We tried to vacuum the McPhonsen 247 over night, however there was a big leak from the bellow connector.

Ping thought the leak from the bellow, so he changed a new bellow. After than, he found the threads of two screws for mounting the bellow were badly damaged, which mainly caused the leakage.

After he put two new screws to tighten the bellow flange, vacuum of the pump system reached 3*10^-5 in 20 minutes.

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