Discharging Refrigerant

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting requirements of SAE J2210 (R-134a recycling equipment) or J2209 (R-134a recovery equipment). If accidental system discharge occurs, ventilate work area before resuming service. Additional health and safety information may be obtained from refrigerant and lubricant manufacturers.

Fig 1: Removing HFC-134A (R-134A) From A/C System Using Certified Service Equipment Meeting Requirements Of SAE J2210 (R-134A Recycling Equipment)

Courtesy of NISSAN MOTOR CO., U.S.A.