Volkswagen Polo Service & Repair Manual: A/C Service and Recycling Units
Pressure Gauge, Tests and Measurements
Indicators on pressure gauge
1 -
Temperature scale for refrigerant R134a CF3–CH2F or
CH2F–CF3.
2 -&nb ...
Extraction System Group Classifications
At this time, A/C service units for extracting, cleaning and
filling refrigerant for motor vehicle A/C systems are available
from various manufacturers.
...
Other materials:
Expansion Valve
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
system.
Only use tools and materials approved by the
manufactu ...
Odor from Evaporator or Heat Exchanger?
Fishy smell
–
From leak at cooling system of engine or of A/C system
heater core.
Note
If the fishy smell gets weaker when the temperature is set
to “cold” and stronger when i ...
Refrigerant in A/C Service station Container, 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.
...
