Air conditioning systems with refrigerant R744 – General information

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety precautions when working on air conditioning systems
  1
• 1.2 Safety precautions when handling refrigerants
  1
• 1.3 Safety measures when working on vehicles with a start/stop system
  2
• 1.4 Safety precautions when using air conditioner service stations
  2
• 1.5 Safety precautions when handling refrigerants R1234yf and R134a
  2
• 1.6 Safety measures for working on vehicles with high-voltage system
  2
• 1.7 Safety precautions when working in the vicinity of high-voltage components
  3
• 2 Laws and regulations
  5
• 2.1 Provisions and directives
  5
• 2.2 Charging refrigerant circuit with different refrigerants
  6
• 2.3 Occupational health and safety
  6
• 3 Repair notes
  7
• 3.1 Rules for cleanliness
  7
• 3.2 Refrigerant circuit seals
  7
• 3.3 Refrigerant and refrigerant oil
  7
• 3.4 Handling pressure vessels
  10
• 3.5 Handling refrigerants
  11
• 4 Identification
  13
• 4.1 Notice for refrigerant circuit
  13
• 5 Technical data
  14
• 5.1 Refrigerant capacity
  14
• 5.2 Refrigerant oil capacities
  14
• 5.3 Safety data sheets
  14
• 6 Basic technical and physical properties
  15
• 6.1 Basics of air conditioning technology
  15
• 6.2 Physical properties
  21
• 6.3 Product characteristics
  26
• 6.4 Function and role of air conditioning system
  27
• 6.5 Other reference material
  28
• Air conditioning system
  29
• 1 Refrigerant circuit
  29
• 1.1 System overview - refrigerant circuit
  29
• 1.2 General description - components of refrigerant circuit
  29
• 1.3 Possible complaints
  41
• 1.4 Investigating leaks
  43
• 1.5 Renewing components
  47
• 1.6 Cleaning refrigerant circuit
  52
• 1.7 Checking pressures with pressure gauge
  57
• 2 Working with air conditioner service station
  59
• 2.1 General information on working with air conditioner service station
  59
• 2.2 Connecting air conditioner service station to refrigerant circuit
  61
• 2.3 Purging refrigerant circuit
  62
• 2.4 Evacuating refrigerant circuit
  64
• 2.5 Charge refrigerant circuit
  67
• 2.6 Bringing air conditioning system into service after charging
  70
• 2.7 Switching off air conditioner service station and separating from refrigerant circuit
  70
• 2.8 Filling refrigerant into internal pressure vessel
  72
• 2.9 Connecting and detaching supplied cylinder
  72
• 2.10 Emptying air conditioner service station
  72
• 2.11 Cleaning refrigerant circuit
  72
• 3 Testing equipment and tools
  73
• 3.1 Tools and materials available from distribution centre or importer
  73
• 3.2 Tools and materials available commercially
  73