Volkswagen Amarok 2011 Workshop Manual page 70

Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
Note
The air conditioning system must be operated for at least
♦
60 minutes to ensure that the injected leak detecting additive
is distributed throughout the entire refrigerant circuit (air con‐
ditioner compressor must run). The leak may become visible
after a short period, but this depends on the size of the leak.
For leaks on the evaporator, the additive can wash off with the
♦
condensed water and leak out from the condensed water
drain-off. As the evaporator is not accessible on the majority
of models without a great amount of pre-preparation, a check
of the condensed water drain point can indicate a leaking
evaporator. The additive must have been in the refrigerant cir‐
cuit for a long time to make this possible.
The eye protect is not only required to protect the eyes, it also
♦
amplifies the illumination of the additive under the UV lamp.
Independent of the accessibility to the various components of
♦
the refrigerant circuit, it may become necessary to remove
certain components from the vehicle (e.g. bumper or air filter).
– Position the vehicle in a darker area of the workshop (in day‐
light or under strong lighting the effect of the UV lamp is greatly
reduced).
– Check the accessibility to the various components of the re‐
frigerant circuit and remove components in the vicinity of the
refrigerant circuit that obstruct the view of the respective circuit
components (e.g. sound insulation and bumper).
– Protect eyes with protective glasses.
– Connect UV lamp to a 12 V battery (vehicle battery). Ensure
that it is connected to the correct terminals.
– Switch on UV lamp and illuminate components of the refriger‐
ant circuit. Locations where leaking refrigerant along with
refrigerant oil and leak detecting additive can leak out, light-up
(fluorinate) under UV light.
Note
The leak detection additive can be allowed to remain in the
♦
refrigerant circuit.
Using cleaning solution - VAS 6201/3- , clean the engine com‐
♦
partment and, if necessary, the components of the refrigerant
circuit, to remove leak detection additive residue left from the
repair work.
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Rep. gr.00 - Technical data