Renewing Components - Volkswagen Amarok 2011 Workshop Manual

Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
11

Renewing components

• All components of the refrigerant circuit submitted for quality
monitoring must always be sealed (use the original sealing
caps from the genuine part).
• The genuine parts (air conditioner compressor, reservoir, re‐
ceiver, evaporator and condenser) are charged with nitrogen
before shipment. This filling is being gradually discontinued,
the pressure of the nitrogen filling is so low that escaping gas
is no longer perceptible when the part is initially opened.
• Where vehicles are fitted with an air conditioner compressor
without a magnetic clutch, the engine should be started only
when the refrigerant circuit has been fully assembled (since
the air conditioner compressor will always run when the engine
is running) ⇒ page 14
• The air conditioner compressor with air conditioner compres‐
sor regulating valve - N280- (without magnetic clutch) has an
internal oil circuit to ensure that the air conditioner compressor
is not damaged when the refrigerant circuit is empty. This
means that approx. 40 to 50 cm
the air conditioner compressor
Note
Since genuine parts are sometimes stored for long periods in
♦
various places, it can well be that gas will escape from some
parts when first opened but not from others (even among those
having the same part number). Therefore, be careful when
unscrewing the sealing plugs from the genuine part connec‐
tions and allow the nitrogen gas to escape slowly.
Either a restrictor with a reservoir or an expansion valve with
♦
a receiver is built into the refrigerant circuit.
Seal open connections and lines to prevent moisture from en‐
♦
tering.
Always renew restrictor.
♦
The reservoir or receiver or cartridge of the dryer bag need not
be renewed under the following circumstances:
• After an accident in which there was no damage to the reser‐
voir or receiver.
• Repairs are performed quickly (no more delay than during a
normal repair time) and there was no moisture intrusion. The
vehicle is no more than 5 years old.
The reservoir or receiver or dryer cartridge should be renewed
under the following circumstances:
• The refrigerant circuit was opened and the vehicle is more than
5 years old.
• The refrigerant circuit has been opened for in indeterminate
period (seepage leak).
• Repairs take longer than a normal repair time and there has
been moisture intrusion.
• Always renew collector/reservoir or dryer cartridge after blow‐
ing through with compressed air or purging with refrigerant
R134a. Keep genuine parts sealed for as long as possible to
keep the ingress of moisture as low as possible.
• The air conditioner compressor seizes.
Air conditioning system with refrigerant R134a - Edition 10.2014
.
3
of refrigerant oil remains in
⇒ page 14 .
11. Renewing components
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