Check that speed control of machine is not set at fully CCW position Check Emergency stop is not engaged Check that guard over rollers is closed and that feed tray is installed If machine is equipped with a clean switch and machine turns when clean switch is used there is a problem with one of the safety switches (E stop , cover over rollers , or feed tray) If machine does not turn when clean switch is used, disconnect power from machine remove lower cover on operator side of machine and reset circuit breakers in electrical panel