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5 Working with the air conditioner serv‐
ice station
Caution
♦ If there is evidence to suggest that chemical substances
have been added in the vehicle to seal leaks, do not con‐
nect the air conditioner service station and do not extract
the refrigerant.
♦ Chemical substances used to seal leaks form deposits in
the refrigerant circuit. These can impair the function of the
air conditioning system and cause the air conditioning
system (and your air conditioner service station) to fail.
♦ Make your customer aware of the fact that there are sub‐
stances in his/her air conditioning system that do not have
VW approval. This air conditioning system cannot be
drained or repaired by you.
Note
♦
Volkswagen AG does not authorise the use of chemical sub‐
stances (leak inhibitor additives) for purposes of sealing leaks
in refrigerant circuits. There are currently no permanent, ef‐
fective or material compatible tests that guarantee never caus‐
ing damage or malfunctions in an air conditioning system or
air conditioner service station.
♦
The leak inhibitor additives currently available on the market
have differing physical and chemical characteristics that may
subsequently affect the function of the air conditioning system
and air conditioner service station or even cause a total failure.
♦
Volkswagen rejects the use of chemical substances for pur‐
poses of sealing leaks in refrigerant circuits.
♦
Chemical substances used for sealing leaks in refrigerant cir‐
cuits often react with the surrounding air and the humidity
contained within. They cause deposits to build up in the re‐
frigerant circuit (and your air conditioner service station),
valves to malfunction and defects in other components with
which they come into contact. These deposits cannot be com‐
pletely removed from the components.
♦
It is often not possible to detect from the outside whether
chemical substances have been used to seal leaks in the re‐
frigerant circuit. The adhesive label that serves to identify its
use can usually not be found. Therefore, exercise caution on
vehicles for which you have no service or repair record.
♦
Containers or tanks are offered as accessories on the open
market that are designed to separate these chemical substan‐
ces (to seal leaks). Since Volkswagen rejects the use of these
substances, no statement can be made at this point regarding
the effectiveness and separation rate of these filters.
Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
5. Working with the air conditioner service station 47
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