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2015/01/02

1230 G1:0mbar, G2:0mbar, P1: 0.65mbar. Plug in He3 pump (blanked off on both ports) to see if that provokes any death rattles.
1500 No death rattles. Attach scroll and turbopump to exhaust of He3 pump. Pump out lines and turn on He3 pump.
1505 Switch to pumping on He3 pump exhaust port with turbopump. Open gas ballast on turbopump in case oil from He3 pump gets into turbopump. Current external presssure sensor reading of 5.4E-3mbar.
1805 External pressure gauge still reading 5.4E-3mbar. Isolate turbopump and close gas ballast. Pressure rises to 2.2E-2mbar. He3 pump still on.
1830 External pressure gauge reads 1.6E-1mbar.
1850 External pressure gauge reads 4.0E-1mbar.
1905 External pressure gauge reads 5.4E-1mbar.