Following discussion with Chandra and Richard, I've bypassed the HAM6 vacuum alarm (PT110) for a week

Tue Nov  5 13:29:40 PST 2019
For channel(s):
    H0:VAC-LX_Y0_PT110_MOD1_PRESS_TORR

I removed the temporary increments in alarm levels now the main vacuum system is nominal

PT124 from 7.0e-09 to 5.0e-09

PT114 from 5.0e-08 to 5.0e-09

Alarm system was restarted to take these changes.