Air Conditioning (Refrigerant R134A Servicing) (2 Of 2)

• 87 Air Conditioning
  • Warnings When Working On Vehicles With High Voltage System
    • Notes
    • Working On Vehicles With High-Voltage System (Hybrid Vehicles)
    • Performing A Visual Inspection Of Damage To High Voltage Components And Cables
  • A/C System, General Information
    • Introduction
    • Safety Precautions For Vehicles With Start/Stop System
    • Additional Information Sources
    • A/C Technology Basic Principles
      • Physical Principles
      • Pressure And Boiling Point
      • Refrigerant R134A Vapor Pressure Table
    • Refrigerant R134A
      • Refrigerant R134A Physical Data
      • Critical Point
      • Refrigerant R134A Environmental Information
    • Refrigerant R134A Characteristics
      • Commercial Names And Designations
      • Color
      • Vapor Pressure
      • R134A Physical Characteristics
      • Affect On Metal
      • General Information
      • Water Content
      • Combustibility
      • Charge Factor
      • Evidence Of Leaks
    • Refrigerant Oil
      • General Information
      • Refrigerant Oil Characteristics
    • A/C System Operation
      • General Information
      • Comfort
      • Environmental Information
    • General Safety Precautions
    • Product Characteristics
    • Handling Refrigerant
    • Handling Pressure Containers
    • Extraction And Charging System Safety Regulations
    • Safety Precautions When Working On A/C System And When Handling Refrigerant R134A
    • Refrigerant Circuit, General Precautions
      • General Information
      • Vehicles With A High Voltage System (Hybrid Vehicles)
      • Refrigerant Circuit, Cleaning
      • Additional Information For Vehicles With A/C Compressor Without A/C Clutch, (Only With A/C Compressor Regulator Valve -N280-)
      • Additional Information For Vehicles With High Voltage System
      • O-Ring Seals
    • After Charging A/C System
  • Refrigerant Circuit General Information
    • Vehicles With A High Voltage System (Hybrid Vehicles)
    • Refrigerant Circuit Components
    • Refrigerant Circuit Components Allocation, High And Low Pressure Sides
      • General Information
      • Mechanically Driven A/C Compressor
      • Electrically Driven A/C Compressor For Vehicles With High Voltage System
      • Condenser
      • Evaporator
      • Heat Pump Operation Heater Core
      • Fluid Collector
      • Reservoir
      • RESTRICTOR
      • Receiver/Dryer
      • Expansion Valve
      • Expansion Valve With Shut-Off Valve
      • Refrigerant Cut-Off Valve
      • Refrigerant Line With Inner Heat EXCHANGER
      • Quick-Release Connections On Refrigerant Lines
      • O-Ring Seals
      • Refrigerant Circuit Lines And Hoses
      • Pressure Relief Valve
      • Check Valves
    • Refrigerant Circuit
      • Refrigerant Circuit With Expansion Valve And Evaporator
      • Refrigerant Circuit With RESTRICTOR And Reservoir
    • Refrigerant Circuit With An Electrically Driven A/C Compressor (With And Without Battery Cooling Module)
    • Connections For Quick-Release Coupling On Refrigerant Circuit
      • General Information
      • Connections With SCHRADER Valve (Needle Valve)
      • Connections With Primary Sealing Valve (Ball Valve)
      • Service Connection Differences, Depending On Refrigerant (R134A Or R1234YF)
        • Notes
        • Service Connection Dimensions
    • Switches And Sensors On Refrigerant Circuit And Connections
      • A/C Refrigerant High Pressure Switch -F23-
      • Magnetic Clutch High Pressure Switch -F118-
      • A/C Refrigerant Low Pressure Switch -F73-
      • Refrigerant Circuit Connections With Valve For Switches
      • A/C Pressure Switch -F129-
      • High Pressure Sensor -G65-, Refrigerant Circuit Pressure Sensor -G805-
      • A/C Pressure/Temperature Sensor
      • A/C Compressor Regulator Valve -N280-
      • A/C Compressor -G111-
      • Refrigerant Temperature Sensor -G454-
    • Electrical Components Not On Refrigerant Circuit
      • Coolant Fan Control Module -J293-
    • Refrigerant Circuit Pressures And Temperatures
      • General Information
      • Refrigerant Circuit With Expansion Valve
      • Refrigerant Circuit With RESTRICTOR And Reservoir
    • Pressure Gauge, Tests And Measurements
      • General Information
      • Pressure Gauge Uses
    • Service And Recycling Units
      • Extraction System Group Classifications
      • Charging Systems Not Requiring A Permit
    • Refrigerant Circuit Repair Information
  • Laws And Regulations
    • General Information
    • Laws And Regulations
      • Refrigerant Circuit, Converting R12 To R134A And Servicing
      • Refrigerant, Keeping Records
  • Refrigerant Circuit
    • A/C System Repair Information
    • Refrigerant Circuit, Converting R12 To R134A
    • Using Service Station
      • General Information
      • Service Station, Important Usage Information
      • A/C Service Station, Connecting For Measuring And Testing
      • Refrigerant Circuit, Discharging With A/C Service Station
      • Refrigerant Circuit, Evacuating With A/C Service Station
      • Refrigerant Circuit, Charging With A/C Service Station
      • A/C System, Operating After Charging
      • Refrigerant To Service Station Reservoir (Charging Cylinder Or Reservoir Bottle), Transferring
      • Service Station, Draining
    • Refrigerant Circuit, Flushing With Compressed Air And Nitrogen
      • General Information
      • Refrigerant Circuit, Flushing
    • Refrigerant Circuit, Cleaning (Flushing) With Refrigerant R134A
      • Notes
      • Sequence of flushing procedure (sequence occurs automatically according to the A/C service station program)
        • Notes
        • Flushing Circuit Block Diagrams
        • Refrigerant Circuit with Restrictor and Reservoir
        • Refrigerant Circuit with Expansion Valve, Receiver/Dryer and Second Evaporator
        • Vehicles with High-Voltage System (without Additional A/C System Functions, for Example the Audi A3 e-tron, Audi Q5 hybrid etc.)
        • Vehicles with High-Voltage System (with Additional A/C System Functions, such as Heat Pump Operation on Audi Q7 e-tron, for Example)
        • Electrically-Driven A/C Compressor, Flushing (Removing Refrigerant Oil)
        • Flush the electrically driven A/C compressor.
        • Adapter For Assembling Flushing Circuit
        • Audi 80, Audi 90, Audi Coupe, Audi Cabriolet and Audi A4
    • Refrigerant Circuit, Determining Leaks
      • General Information
      • Refrigerant Circuit, Tracing Leaks Using Electronic Leak Detector (For Example, :VAG1796)
        • Notes
        • Perform a Leak Detection Test for a Refrigerant Circuit that is Filled with Refrigerant:
      • Leak Detection On Refrigerant Circuit Using Leak Detection Kit :Vas6201A
        • Notes
        • Add the UV-Leak Detection Additive Using the A/C Service Station to the Refrigerant Circuit.
        • Add UV-Leak Detection Additive using the in the Refrigerant Circuit
        • Adding UV-Leak Detection Additive when the Refrigerant Circuit is Empty
        • Add the UV-Leak Detection Additive to the Refrigerant Circuit via an Opened Connection
        • Adding UV-Leak Detection Additive when the Refrigerant Circuit is Full
        • Detecting Leaks on the Refrigerant Circuit using
      • Finding Leaks Via Vacuum Test Using A/C Service Station Or Nitrogen Pressure Testing
  • Refrigerant Circuit Complaints
    • Possible Refrigerant Circuit Concerns
      • Test Requirements
      • Possible Concerns
  • A/C Service Station, Connecting
    • General Information
    • Service Station, Connecting With Connections On Low- And High Pressure Side Of Refrigerant Circuit
    • Service Station, Connecting With No Connection On Low- And High Pressure Side Of Refrigerant Circuit
      • General Information
      • Service Station, Connecting With A/C Adapter Set :VAG1786 To Refrigerant Circuit
      • Service Station, Connecting With A/C Adapter Set - Adapter: VAG1785 To Refrigerant Circuit
      • A/C Service Station, Connecting For Measuring And Testing
  • Pressures, Checking
    • General Information
    • Refrigerant Circuit, Checking Pressure With Service Station
      • General Information
      • Test Requirements
      • Pressures, Checking
    • Checking Pressures For Vehicles With RESTRICTOR And Reservoir (With Internally Regulated Compressor)
      • General Information
      • Specified Values For The Refrigerant Circuit Pressures