Use this monthly preventive maintenance checklist for AIRSTACK air cooled chillers to guide HVAC technicians through safe, consistent service. It outlines required tools and PPE, safety practices such as lockout tagout and proper refrigerant handling, and step-by-step checks: review daily logs and trends, inspect power and control connections, look for oil and water leaks, verify the refrigerant sight glass, and alternate hydronic pumps and lead or lag settings. Record findings and maintenance hours, report issues, and maintain compliance-ready documentation.
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