xsto CT420SC Operation Manual page 25

3.6.5 Climb the last THREE steps
When the crawler reaches the edge
of the last step, the speed must be
set to 1. Set CT420SC to the
automatic adjustment mode of the
loading plate through the hand-held
controller. When moving to 1/3
position of the nylon block below,
press the button of automatic
adjustment mode of the
supporting wheel, and the screen
will show that the automatic
adjustment mode of the supporting
wheel is on . The rear support
wheel will automatically extend until
it touches the step and stops
extending. Continue by controlling
the rocker until CT420SC fully enters
the stair platform. Press the support
wheel automatic debugging mode
button again after the handle. The
screen will show that the support
wheel automatic adjustment mode
is on and the buzzer will keep
ringing. When CT420SC fully enters
the platform, the automatic
adjustment mode of the support
wheel will be turned off, and the
mode will be switched to the
support wheel control mode, and
the rear support will be fully placed