# Operating

Make sure that the tool is in correct working order and that the controller is correctly programmed to avoid unexpected behaviour from the tool, which may result in operator injury.

Check that the tool is in the correct running direction by looking at the function light situated above the tool handle, by turning the reverse ring (only for ETV/ETD DS or by turning the arm on the trigger knob (only for ETP DS).

The soft-start function facilitates entering the screw head and thread.

The duration of the soft start is adjustable, see the manual for the drive unit.

The tool is equipped with signal lights,

- Green = OK tightening

- Yellow = Warning – low torque (not for ES)

- Red = Warning – high torque

- Orange = Function indicator (only for SL and DL)

- Blue = Function indicator (only for SL)