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- Ensure MV101, MV103 are closed. (This is to isolate the outside gHe tank).
- Turn OFF the Kaser Comprssor (HR3)
- Ensure V30 and V35 are also closed. (This is to isolate the purifier).
- Connect an oil pump to the buffer tank's VBT outlet.
- Connect He bottle to Helium purge Inlet
- Open the He bottle to 10 psig
- Open the valve on the buffer tank and start the vacuum
- Monitor the pressure on the buffer tank and let it go up to ~ 0.2 psi
- Close "Vfill" and pump the lines and monitor the buffer tank pressure to go up to 0.2 psig
- Pump back the lines by opening Vfill and monitor the buffer tank pressure to go up to ~ 10 psi
- Do the pump and purging for 3 cycles
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