Refrigerant Circuit, Tracing Leaks, With Electronic Leak Detector :VAG1796: Notes
Minor leaks can be detected using an electronic leak detector for example.
-- Evacuate the refrigerant circuit with the A/C Service Station. Refer to REFRIGERANT CIRCUIT, EVACUATING WITH A/C Service Station .
Be ready to evacuate a large leak should one be found. Refer to REFRIGERANT CIRCUIT, EVACUATING WITH A/C Service Station .
If no leak is found during evacuation or there is a leak that is so small that the location cannot be found, proceed as follows. Refer to SEARCHING FOR REFRIGERANT CIRCUIT LEAKS WITH COMPRESSED AIR OR NITROGEN .
Currents of air quickly disperse refrigerant gas. Drafts must therefore be avoided during leak detection.
If the refrigerant circuit is completely empty, fill with refrigerant to approximately 10% of the fill capacity (R134a label or vehicle-specific Service Information).