The supply fan motor in the upper air tunnel of AHU-1 will be replaced.
- AHU-1 will be operating during most of the outage with just one fan in service; however, the cross-connect panels between AHU-1 and AHU-2 will be opened to allow AHU-2 to assist with serving the AHU-1 supply duct work during the outage.
- A shutdown of both AHU-1 and AHU-2 and associated exhaust air handling units will be necessary at the start of the outage to open the cross-connect panels between the two units. This work will occur between 6:00 pm and 7:30 pm on Friday (3/15). No work may occur in any of the BSL3 suites or any of the laboratory fume hoods during this 1-1/2 hour period. Minimal impact to space temperatures is expected during this period.
- Once the cross-connect panels are opened and the supply units are restarted, normal supply airflow is expected to all of the labs in the building including the BSL3 suites. Work may resume in the BSL3 labs.
- Exhaust airflow to all of the BSL3 lab suites will be operational during the outage.
- A shutdown of both AHU-1 and AHU-2 and associated exhaust air handling units will be necessary at the end of the outage to close the cross-connect panels. This work will occur between 5:00 am and 7:00 am on Monday (3/18).
- No work may occur in any of the BSL3 suites during this two hour period. Minimal impact to space temperatures is expected during this period.