Kühlschrank kühlt nicht mehr - Kältemittel ausgelaufen? | Diagnose und Fehlersuche

Today we are conducting a refrigeration technician training session on a malfunctioning refrigerator-freezer in a cafeteria. It's a professional-grade appliance. ... Time required for work (1.5 hours) Diagnosis 5 min. Confirmation of refrigeration fault 15 min. Pressure testing of unit and leak checks 30 min. Evacuation and refrigerant charging 40 min. Additional time required: customer consultation, waiting time until the responsible person arrived, retrieving tools, repositioning the vehicle, etc. approx. 30 min. Total duration of operation approx. 2 hours 0:00 Introduction 1:00 Diagnosis 5:20 Puncture refrigeration circuit 6:00 Open refrigeration circuit 8:30 Install service valve 9:50 Pressure test system with nitrogen 10:15 Leak detection at external connections 16:20 Leak detection at the NoFrost evaporator 18:10 Evacuate refrigeration circuit 20:15 Refrigerant charging 21:20 Disconnect charging station 21:45 Further procedure