B-MAX 2012 – Climate Control System – General Information – Air Conditioning (A/C) System Leak Test Using Nitrogen Gas – General Procedures

Climate Control System - General Information - Air Conditioning (A/C) System Leak Test Using Nitrogen GasB-MAX 2012.75 (01/2012-)
General Procedures

General Equipment
Air Conditioning Service Unit
Nitrogen Pressure Gauge and Leak Detector
Refrigerant Identification Equipment
Materials
NameSpecification
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Activation

  1. Refer to: Climate Control System Health and Safety Precautions (100-00 General Information, Description and Operation).
Vehicles with 1.0L engine
  1. Unscrew and remove the protective caps from the A/C charging connections.
  1.  
    1. High-pressure connection
    1. Low-pressure connection

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Vehicles with 1.4L, 1.6L or diesel engine
  1. Unscrew and remove the protective caps from the A/C charging connections.
  1.  
    1. High-pressure connection
    1. Low-pressure connection

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All vehicles
  1. Use the refrigerant analyzer before recovery, otherwise the refrigerant center may become contaminated. Dispose of contaminated refrigerant as hazardous waste. Always follow the manufacturer's instructions when using the refrigerant center and the refrigerant analyzer.
    Use the General Equipment: Refrigerant Identification Equipment
  1. Connect the service unit lines to the filling connections of the air conditioning system in accordance with the service unit manufacturer instructions.
    Use the General Equipment: Air Conditioning Service Unit

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  1. Drain the air conditioning system in accordance with the service unit manufacturer instructions.
  1. Evacuate the air conditioning system in accordance with the service unit manufacturer instructions.
  1. Perform the vacuum leak test in accordance with the service unit manufacturer instructions.
  1. Disconnect the service unit from the air conditioning system in accordance with the manufacturer instructions.
  1. Connect the nitrogen gas pressure gauge and leak detector service hose to the low-pressure port of the air conditioning system in accordance with the manufacturer instructions.
    Use the General Equipment: Nitrogen Pressure Gauge and Leak Detector
    Material: - (????)

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  1.  

    1. 1. cautionNOTICE: Make sure that the pressure reducer (2) is closed.

      Open the bottle valve.
    1. Slowly turn the pressure reducer until a pressure of 10 bar is reached.
    1. Close the bottle valve.

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  1. Locate and rectify any leaks in the A/C refrigerant circuit.
    Material: - (?????-????????????)
  1. Disconnect the nitrogen gas pressure gauge and leak detector from the air conditioning system in accordance with the manufacturer instructions.
  1. Connect the service unit lines to the filling connections of the air conditioning system.

  1. NOTICE:

    caution Make sure that the specified amount of refrigerant oil is added.

    caution Make sure that tracer dye is added.

    NOTE: After adding tracer dye into the air conditioning (A/C) system, the decal supplied with the tracer dye must be positioned.

    Fill the air conditioning system in accordance with the service unit manufacturer instructions.
    Refer to: Specifications (412-00 Climate Control System - General Information, Specifications).
    Refer to: Refrigerant Oil Adding (412-00 Climate Control System - General Information, General Procedures).
  1. Disconnect the service unit from the air conditioning system in accordance with the manufacturer instructions.
  1. Screw the protective caps onto the charging connections.

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