This preventative maintenance check sheet guides engineers through a full refrigeration plant health check for retail sites. Tasks include verifying compressor controls and crankcase heaters, checking Rotalock connections, taking oil samples and refrigerant levels, calibrating pressure transducers, confirming set points for R404a R448a R407a, replacing liquid line driers, inspecting receivers to PSSR PED, checking PRVs, pipework and Schrader valves, testing safety and backup systems, cleaning and testing condensers, assessing cabinet defrost heaters and insulation, coldroom evaporators and trace heaters, clearing alarms, ensuring electrical panel safety and earthing, and completing F-gas leak testing with photo evidence.
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