Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A1 Sportback 2 ...
Air conditioner with refrigerant R134a - Edition 11.2018
♦ Compressed-gas vessels on which the maximum permissible
capacity is indicated by the net weight (filling weight, permis‐
sible weight of fill) in kilograms must be filled gravimetrically.
The vessels must be weighed during filling and subsequently
subjected to a weight check on special scales to detect pos‐
sible overfilling. Scales used for this purpose must be calibra‐
ted.
♦ Under certain conditions, gases with a tc greater than/equal to
+70°C may be transferred volumetrically from compressed-
gas vessels with a maximum volume of 150 l to compressed-
gas vessels with a volume of max. 1000 ccm. The stipulations
of the TRGS apply to filling workmen's cylinders with liquefied
gas.
♦ Different TRGS apply to vessels in vehicles:
– For gases with tc ≥ +70°C.
– For technical gas mixtures with tc ≥ +70°C.
– Liquefied extremely low-temperature compressed gases may
also be filled volumetrically (with the exception of vessels in
vehicles) if the charging system and/or the vessels is/are
equipped with devices for measuring or limiting the volume of
the charge and for measuring the temperature of the charge.
When filling volumetrically, it must be ensured that the per‐
missible charge weight indicated on the vessel is not excee‐
ded. To determine possible overfilling, the charged vessels
are to be checked gravimetrically on calibrated scales or volu‐
metrically, provided that the compressed gases are not highly
toxic. Volumetric checking requires the use of appropriate
equipment with completely separate charging and checking
devices.
♦ Charging and check measurements must be performed by
different people. Check measurements must be performed
immediately upon completion of the filling process.
♦ Overfilled vessels must be discharged immediately and safely
until the permissible filling quantity is reached. The com‐
pressed-gas fill must then be determined again.
♦ Certain parts of TRGS 407 do not apply or only apply to a
limited extent to vessels for liquefied, extremely low-tempera‐
ture compressed gases which are neither flammable nor toxic;
this does not affect the provisions of road traffic legislation.
♦ When filling compressed gas vessels with liquefied gases at
charging temperatures ≤ -20°C, the compressed gas vessel
(if the vessel material has not been tested for temperatures ≤
-20°C) is not to be released from the charging system for
transportation until the vessel wall temperature is ≤ +20°C.
Recycling and refuse law
♦ Regulations and rules for the handling and disposal of refrig‐
erants and refrigerant oils can be found in the climate protec‐
tion regulation on chemicals and in the recycling and refuse
law (applicable in Germany, different regulations and rules
may apply in other countries).
Disposal of refrigerant
Refrigerants intended for disposal must be transferred to marked
recycling cylinders, observing the permissible filling quantity. In
Germany, reference should be made for example to the climate
protection regulation on chemicals and the recycling and refuse
law (different regulations and rules may apply in other countries).
Disposal of refrigerant oil
Used refrigerant machine oils from systems with halogenated hy‐
drocarbons must be disposed of as waste requiring particular
care. They are not to be mixed with other oils or substances.
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Rep. gr.87 - Air conditioning system
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