Preliminary Engineering Review for TE Maxson Main Aeration Blower System

Date: 2025 08-August 27

Malasari Engineering, Gresham Smith, and Maxson

This meeting will primarily discuss electrical issues.

There in the conference room (Fine Bubble Diffuser people)

• EDI
• Next Turbo
• E-Tech

The main goal today is to start and stop blowers.

Gary Garrison's History and Status Rundown

• We have 6x 1500HP blowers
• Installed in 1969
• "TWAC"
• Radiators were removed later, so now there are TWAC air cooled
• Over the years we have added a couple of air cooled motors.
• Electrical system starter - reduced voltage, two pole, auto transformers.
• There have been issues with blowing up the auto transformers.
• The control system is about 400 feet from the system itself, so you don't know what is happening at the bucket.
• If there is a fuse blown, there have sometimes been a single-pole start.
• Lately: Across the line start
• Vacuum interrupters. Cutler Hammer <-- (Original) Westinghouse IQ's.
• Schweitzer equipment (7/10-5)
• It would be nice to have a soft start system. Eaton Soft Start. This would be more reliable than the vacuum interrupters.
• Bentley Nevada Machine Health System (1970's style), monitoring standalone - not connected to Ovation system. Monitors motor RTD's.
• Updated machine health wishlist
  • Differential pressure, see when the air filters are dirty
  • Vibration monitoring
  • Turnkey DCS system
  • Motor bearing temperature

The boys from Gresham Smith (Sid Hamby, Craig Parker, and Jason Carroll) will bullet point the immediate scope.