This morning Kyle and I were working on reducing air flow at FAN06 by changing the variable pitch setting. While we were at lunch (~12:58 local time) the fan apparently tripped at the motor control unit - possibly on a motor temperature as we noticed the fan housing was noticeably warmer than SF05.

Patrick noticed particle counts had risen in the OSB lab and alerted us. Flow has been restored to the original state.

Additionally two return air registers in the control room have been removed in an effort to reduce noise.