Jordan

We ran the functionality test on the main turbopumps in MY and EY during Tuesday Maintenance (11/28/23). The scroll pump is started to take pressure down to low 10^-02 Torr, at which time the turbo pump is started, the system reaches low 10^-08 Torr after a few minutes, then the turbo pump system is left ON for about 1 hour, after the hour the system goes through a shut down sequence.
 

MY Turbo:

Bearing Life:100%

Turbo Hours: 208

Scroll Pump Hours: 74

EY Turbo:

Scroll pump made a grinding sound after getting to ~ 5E-2 Torr. I closed all valves and stopped the test. The scroll pump only has 200 hours on it so it will be disassembled to figure out the source of the noise. I have swapped the scroll pump with a new ISP250, but did not have time to run the turbo test. I will resume next tuesday and add a comment to this alog with the EY results.

Closing WP 11544 and FAMIS 24917