ACS 620 — Digital Air Conditioning Refrigerant Handling System. The Bosch ACS 615 is the latest in technology for air conditioning service! This fully automatic machine is accurate and efficient, saving the shop time and money, plus it is J2788 compliant. The ACS 615 is technician friendly and very easy to use. The innovative revolving control panel turret houses large easy-to-read 4" dial gauges, a large 4x20 LCD display and intuitive keypad. The fully-automatic programming increases hop efficiency. The easy-access Filter reduces the amount of time for maintenance. The unique foam-filled rear tires will not go flat, and combined with the ergonomic 'whale tail' handle; help make the ACS 615 easy to maneuver around the shop.