Mesa College Coil Condenser Building G

Project Schedule

Project Progress Update

Upcoming Milestones:

• 05/21/2025: Proposal Received from ACCO Engineering Systems.
• 07/29/2025: Notice to Proceed (NTP) issued to ACCO Engineering Systems.
• 08/15/2025-08/22/2025: Shutdown request of the HVAC System for the replacement of the Chiller Coils at building G sent.
• 11/24/2025 – 11/30/2025: Work scheduled to commence Thanksgiving break.

Project Description

During an on-site visit to the Mesa G10 facility, an ACCO technician inspected the 130-ton Trane Chiller CH-1 and identified a failure in one of its circuits. Specifically, Circuit 1 was found to have a failed set of condenser coils. Based on this assessment, recommendations include replacing the four condenser coils associated with the affected circuit. The proposed scope of work includes the following steps: first, isolating Chiller 1, followed by recovering refrigerant from the failing circuit. The technician will then remove the fan sections as necessary to access the coils, rig out the old coils, and furnish and install four new OEM condenser coils for Circuit 1, brazing all required connections. After installation, the system will undergo a pressure test, then be recharged and reassembled. Finally, a system startup will be performed to verify proper operation

Project News & Information

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Project Teams

Last updated: March 31, 2026