Volkswagen Polo Service & Repair Manual: Refrigerant R134a Characteristics
Refrigerant R134a Environmental Information
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as ref ...
Commercial Names and Designations
Refrigerant R134a is currently available under the following
trade names:
H-FKW 134a
SUVA 134a
...
Other materials:
Refrigerant Circuit with A/C Service Station, Filling
Caution
If it is suspected that chemicals were added to the
refrigerant circuit to seal leaks, do not connect the
A/C service station and do not extract the refrigerant.
...
A/C Programmer -J127
This programmer switches the refrigerant flow direction
through the second evaporator if the temperature on the cooling
fins on the second evaporator lowers to the freezing point for
water (icing protection).
...
Refrigerant Circuit with Restrictor and Reservoir
Arrows point in direction of refrigerant flow.
A-Low pressure side of refrigerant circuit.
B-High pressure side of refrigerant circuit.
Component
Aggregate state of refrigerant
...
