(Gerardo M., Brandon P. (RMC Tech), Jordan V. (buddy))

Today the second oil pump was replaced on the Kobelco unit, no issues to report.  For previous work see aLOG 90318.

The purge air was isolated at the dryer towers and at the point of delivery before starting work.  Brandon shut off the compressor and stopped the dryer system, then removed and replaced the oil pump.  Kobelco compressor was re-started, oil measured, compressor was turned off to add oil up to nominal value, then the compressor was started and load tested.  No issues noted.  Brandon handed over the system.  I started the dryer towers back up, no issues noted.  Dew point from the local reading at the towers remained below -51 ^oC since the dryer system remained with both towers "loaded", and since there was no demand both remained pressurized.  After an hour with both the compressor and the dryer towers running at nominal, I opened the purge air to the LVEA lines.  After 45 minutes I took a couple of measurements.

Measurement results:

1. Point of use, near the purge port near HAM4 yielded a dew point of -43.2 ^oC
2. Same as before, near the dryer towers in the mechanical room, the dew point was taken before the big pressure regulator, port for the TMDS air supply, both towers yielded -44.4 ^oC.

Purge air is purging into the opened volumes.  Once again, please don't waste the purge air, if you can please keep those C3 door covers closed.  Thank you!

Leaving site now.