The Mastercool A/C machines, Nos. 69788A and 69789, certified for compliance with SAE J2788 can perform automatic and continuous recover/recycle, vacuum, vacuum leak test and recharge. Includes an installed data base of thousands of vehicle refrigerant capacities for domestic and imports from 1998 to 2012. Automatic operation includes auto oil discharge, auto air purge, auto vacuum leak test and auto filter alarm. Also incorporates a 6cfm vacuum pump for efficient air and moisture removal. Thirty pound internal DOT tank, heavy duty load cell scale and compact footprint will provide for years of reliable performance.