Maintenance for CRP-04
Date:
Tuesday, October 12, 2021
Synopsis:
Rebuild and motor change.
Equipment/Beam Line:
Description:
Previous pump had a periodic puff of air into the vacuum. This pump had a bad bore. The bore and the arrays were changed. The cold head was rebuilt and it was run a few weeks. The temperature was not stable. So the valves and valve bodies were changed and the second stage displacer seal was changed. After which the motor started making noise. The motor was subsequently changed. Now it's running and in good order.