First read and observe the introductory information
and safety warnings
Introduction
ChecklistProduct Characteristics
Refrigerants used in motor vehicle air conditioning systems
belong to the new generation of refrigerants based on
chlorine-free, partially fluorinated hydrocarbons (H-FKW,
R134a).
With regard to their physical properties, these are
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Adhesive Surface Pretreatment when Replacing Laser-Soldered Roofs
Dry sand the cataphoretic primer on the roof adhesive surface
-item 6-
→ Item down to the bare metal using P180 sandpaper.
–
Dry sand the roof pillar adhesive surface
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A/C System, Operating after Charging
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.
...