Guidelines For Clean Working Conditions

Even slight contamination can cause malfunctions for this reason when working on the A/C system pay attention to the following cleanliness regulations:

• Immediately seal off any open lines and connections with clean plugs taken from the Engine Bung Set:VAS 6122  , for example.
• Place removed parts on a clean surface and cover them with lint-free cloths.
• Carefully cover or seal opened components if repairs are not performed immediately.
• Only install clean parts: remove the replacement parts from their packaging just before installing them. Do not use any parts that have been kept out of packaging (for example, in a toolbox).
• Do not work with compressed air when the system is open.
• Protect the disconnected connectors from dirt and moisture and only connect when they are dry.