Oce TCS400 User Manual page 201

Replace the handles.
Return the sliders to their default position.
7
Move the slider to the center of the pressure platen passed the safety button.
Hold the slider in its position.
[63] The location of the safety button
[63] The location of the safety button
Press the safety button and release the slider.
Use one hand to press down on the platen.
Make sure that the slider is returned to the default position.
Repeat the procedure for the other slider.
Maintenance 201