R&D (FilterCavity)
RyutaroTakahashi - 17:14, Wednesday 17 June 2020 (2098)
Replacement of TMP in NM2

Takahashi, Yuhang, Eleonora

We replaced the TMP near NM2 from TMC1000MC (broken) to STP-1003 (new).

  1. Removed the screws for the ICF253 flange. Dismounted the old TMP.
  2. Mounted the new TMP. Set the rotational direction of exhaust to 225deg. Fastened the screws for the ICF253 flange. Final torque was 250kgf/cm.
  3. Connected the dry pump (DSP250). Started the dry pump. Opened the angle valve.
  4. Turned on the controller. It showed a fail due to different combination between the TMP and the controller. Reset the controller, then the controller went to auto tuning.
  5. Started the TMP. The TMP went to normal operation.
  6. After monitoring for two hours, opened gate valves to the 300-m pipe. The pressure became 4x10-7mbar.
Images attached to this report
2098_20200617101343_newtmpnm21.jpg 2098_20200617101351_newtmpnm22.jpg