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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017
4
Identification
⇒ “4.1 Notice for refrigerant circuit”, page 14
4.1
Notice for refrigerant circuit
♦ The notice -A- provides details about the type of refrigerant,
the volume of refrigerant charged in the system during pro‐
duction and which refrigerant oil is used.
♦ Symbols on the notice -A- indicate the risks that might be en‐
countered when handling refrigerant and when working on the
refrigerant circuit.
♦ In addition, it may specify standards, e.g. specific SAE stand‐
ards that are valid in the USA. SAE J639 describes the safety
instructions for air conditioning systems in passenger cars.
SAE J842 describes that only components and materials ap‐
proved for R1234yf refrigerant may be used, while SAE J2845
lk
indicates that only trained and certified persons may carry out
repairs and service work on the refrigerant circuit of an air
conditioning system.
♦ Depending on the type and production period, it may also in‐
dicate the GWP for the refrigerant used.
♦ The capacities and type of refrigerant oil marked on the notice
-A- indicate the status during production of the vehicle. The
latest applicable values should always be gleaned from the
vehicle-specific workshop manual ⇒ Heating, air conditioning
system; Rep. gr. 00 ; Technical data (vehicle-specific work‐
shop manual).
Note
The country-specific legislation, regulations and standards must
be obeyed independently of the details on the notice -A-. In the
area of the European Union, e.g. the applicable EC regulations
⇒ “2 Legal texts and regulations”, page 5
With details about the type of refrigerant and specified capacity
⇒ Heating, air conditioning system; Rep. gr. 00 ; Technical data
(vehicle-specific workshop manual).
14
Rep. gr.00 - Technical data
GETth
English 
