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  • Introduction
    • Safety
      • Mind with flammable refrigerants
        • Use of flammable refrigerants of the A2L safety classes and A3 (e. g. R1234yf or R290)
          • Work on systems with A3, A2L and B2L refrigerants
            • System design with highly flammable refrigerants
              • Suspicion of burnt refrigerant in terminal box
                • Dismounted components from systems with A3 or A2L refrigerants
                  • Used oil from systems with A3 or A2L refrigerants
                • System design
                  • Pipe layout and further components
                    • Vibrations and sound
                      • Avoiding damages due to critical pipe lengths
                        • Particular notes on safe compressor and system operation
                          • Pump down system
                          • Tandem and trio operation
                            • Verifying adequate oil level
                              • Causes for oil loss
                              • Document as PDF