Super Max 8790 ASTPrice excludes freight. The Super Max 8790 AST is the most powerful portable, electric cold water pressure washer in Daimer's 8700 AST series. It features the world's only, a Daimer exclusive, AST (Automatic Shutoff Technology) which provides control over the start and stop of the motor and pump when the trigger gun is operated. When AST is in the "on" position; it automatically shuts off the pump after an adjustable 30 seconds of inactivity to