Volkswagen Amarok 2011 Workshop Manual page 25

Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
2.1.3 Air conditioner compressor without
magnetic clutch
The air conditioner compressor is driven by a V-belt from the en‐
gine.
A shear link is incorporated in the air conditioner compressor V-
belt pulley. In the event of stiffness in the air conditioner com‐
pressor, it shears off and protects the V-belt drive from overload.
The air conditioner compressor draws refrigerant gas from the
evaporator, compresses it and sends it to the condenser.
Note
The air conditioner compressor contains refrigerant oil, which
♦
is miscible with R134a refrigerant at all temperatures.
The maker's nameplate states the refrigerant for which the air
♦
conditioner compressor is suitable. A valve regulates the pres‐
sure on the low-pressure side within the specified range (reg‐
ulation characteristic).
The regulating valve for this air conditioner compressor is ex‐
♦
ternally activated.
The engine should be started only when the refrigerant circuit
♦
has been fully assembled
The air conditioner compressor has an internal oil circuit to
♦
ensure that the air conditioner compressor is not damaged
when the refrigerant circuit is empty. This means that about
3
40 to 50 cm refrigerant oil remain in the air conditioner com‐
pressor.
Air conditioning system with refrigerant R134a - Edition 10.2014
⇒ page 14 .
2. General information on refrigerant circuit
19