20190903 CO Fan failure

Started receiving high temperature alerts, trailer temp was fine, co instrument had temp bouncing from 35C to 45C. Upon opening the instrument all 3 fans were not working properly. The bench fan was spinning slowly (like a stepper motor) and was visually cracked open. The exhaust fan was also clicking as it slowly ran. All 3 fans were hot and the instrument was warm to the touch. The instrument was shut down and restarted at 15:22CST to test. Bench fan was determined to be dead and was replaced by a fan from an O3 analyzer instrument located in 403. 2 Fans need to be ordered and installed to replace the clicking exhaust fan and the bench fan. The instrument has not had all fan screws reinstalled, but was restarted in maintenance mode.