Annual CO2 Major PPM Checklist

This annual CO2 major planned preventive maintenance checklist is designed for large retail stores operating CO2 refrigeration packs. It guides technicians through asset identification, safety checks, and a complete set of maintenance steps, including ventilation tests, labels and documentation verification, electrical and control inspections, inverter and compressor checks, oil management and acid tests, refrigerant charge verification, sensor and transducer validation, PRV rating and tagging, leak testing, and visual inspections of vessels and pipework. It also covers UPS battery status, housekeeping, securing plant rooms, and raising linked work orders for any defects found.