ITH:MP1 inlet pressure showed 10torr after power outage during holiday. All ITE/W turbo-pumps were tripped because of it. Removed one shielding block above the vacuum station. Visually checked oil level  and condition in pump. oil level is high. oil color is dark. no oil  leak .  Installed a local convectron gauge on pump inlet. After pumping down, It shows pump is good.  Tightened  all KF 25 and 50 clamps on pump inlet side. Reconnected pump to system. Everything works fine so far. All ITW / E turbo pumps are started now.