>>> 'ee135' problem from parrish -- Fri Apr 14 11:00:02 1989 <<<

problem:    vacuum system has a leak in the chamber

cause :     aperture leaking at the stem

solution:   cleaned the stem and added vacuum grease. sstem pumping at 2x10
            -6. If any better pressure is needed the aperture will have to 
             be removed and rebuilt.

>>> 'ee135' problem from parrish -- Tue Apr 18 09:45:46 1989 <<<

the bellows on the roughing line has a leak, this is a new leak that occured
this morning.

>>> 'ee135' problem from parrish -- Wed Apr 19 15:29:50 1989 <<<

problem:    leak in the bellows of the foreline

cause:      wear of normal use.

solution:   removed the bellows and replaced with red rubber hose, also
            changed other hoses in the system. its pumping good vacuum
            will have to check it in the morning.

>>> 'ee135' problem from parrish -- Thu Apr 20 08:53:16 1989 <<<

system checks at 1x10-6 in the chamber 10 mins after filling the trap I`m
not sure of the pressure they had in the pass, but it should get into the
10x-7 range under normal uses.

>>> 'ee135' problem from parrish -- Thu Apr  5 15:03:47 1990 <<<

problem:    system need water connection for diffusion-pump

cause:      system was moved 

solution:   connected water to diffusion-pump,also added regulator and
            flow indicator to the water system. system was tested with
            liquid nitrogen and the chamber seem to be okey. base press
            at mid 7 range and the chamber in the low 6 range after about
            1 hour pumping.
