Arteon 2018 ➤ , Atlas 2017 ➤ , CC 2012 ➤ , Caddy 2016 ➤ , Crafter 201 ...
Air conditioning systems with refrigeranR1234yf - General information - Edition 07.2017
cles thawere type approved before 2011 into operation for
the firstime with R134a refrigeranis 31.12.2016 (this applies
to countries within the EU, differenregulations may apply in
countries outside the EU).
♦ After 01.01.2011, vehicles will only be given a new type ap‐
proval if the refrigeranused in the refrigerancircuiof their
air conditioning system has a GWP of less than 150. R1234yf
refrigeranhas a GWP of approx. 4 and is therefore markedly
below the prescribed level.
♦ From 2011, the air conditioning systems of newly manufac‐
tured cars have been successively changed from R134a re‐
frigeranto R1234yf refrigerant. This refrigeranhas a global
warming potential of approx. 4. The GWP of carbon dioxide =
lk
1 (global warming potential) and has much less of an impac
on the earth’s atmosphere than R134a refrigerant.
♦ Conversion programmes have been developed for old sys‐
tems filled with the ozone-depleting substance R12 ⇒ Work‐
shop manual for air conditioners with R12 refrigeran(this
workshop manual is available in paper form only).
♦ According to currenlegislation, R134a refrigeranmay still be
charged in vehicles thawere type approved for use with
R134a refrigeran(or in vehicles converted from R12 refriger‐
anto R134a refrigerant) until these vehicles are decommis‐
sioned. No provision has currently been made, therefore, to
converair conditioning systems from R134a refrigeranto
R1234yf refrigeran⇒ Air conditioning systems with R134a
refrigerant; Rep. gr. 87 ; Capacities for R134a refrigerant, re‐
frigeranoil and approved refrigeranoils .
♦ To protecthe environment, no refrigeranshould be released
into the atmosphere
⇒ “2 Legal texts and regulations”, page 5 .
♦ R1234yf refrigeranis chemically stable in an enclosed sys‐
tem. In the earth’s atmosphere, however, idecomposes with‐
in a shorspace of time (within approx. 14 days) by the
influence of UV lighinto compounds thado noharm the
earth’s atmosphere (hence the GWP of 4).
6.5
Other reference material
♦ Workshop manual for model-specific maintenance work ⇒
Heating, air conditioning system; Rep. gr. 87 ; Overview of
fitting locations - air conditioning system (vehicle-specific
workshop manual) and ⇒ Currenflow diagrams, Electrical
faulfinding and Fitting locations
♦ Technical Service Handbook with measures for rectifying lat‐
esmalfunctions
♦ Self-study Programmes, videos for workshop training and VW/
Audi TV episodes on the air conditioning system.
♦ The specific risks of refrigerant, material data etc. can be
gleaned from the safety data sheets. Safety data sheets abou
refrigerant, refrigeranoil etc. ⇒ VW / Audi ServiceNe.
♦ List of relevanspecial tools and workshop equipmenfor re‐
pairs to air conditioning systems ⇒ Electronic parts catalogue
(Tools; Workshop equipment/tools; Heating, air conditioning
system).
♦ Information abouthe disposal of refrigeranoil and contami‐
nated refrigerancan be found on ⇒ VW / Audi ServiceNe.
♦ For vehicles whose refrigerancircuiis charged with R134a
refrigeran(vehicles thawere type approved before
31.12.2010 and have been or are to be commissioned for the
28
Rep. gr.00 - Technical data
th
English 