Trivia: The infamous "melting man" scene was a controversial addition to the film, and many people involved wanted it removed as some found it too disturbing while others found it sort-of silly. In later test screenings, it also proved to be both the single most popular and single most unpopular scene in the film during audience feedback discussions.
Trivia: 7 suits were used to make the whole film.
Answer: Because he knew he was doing illegal activities. Robocop was said to be highly efficient at his job and Jones did not want to risk him out on the streets without the insurance of shutting him down if Robo came after him.
MasterOfAll