CO2 PPM Checklist for Tesco Stores

This CO2 planned preventive maintenance checklist is designed for Tesco supermarket refrigeration systems. It guides technicians through essential safety and performance checks, including signage and isolation, electrical integrity, interlocks and earthing, control voltages, compressor staging and overloads, crankcase heaters and fans, oil testing and management, transducers and set points, receiver levels, filter changes, PRV condition, bursting discs, and safety switches. It also covers gas cooler cleaning, fin and coil inspection, leak testing across components and pipework, probe placement, differential checks, and ensuring all cases communicate to set points, with clear closeout steps.