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Warning: There is potential risk when CT420SC moves on
the highest stair. CT420SC may roll over forward or backward.
Make sure there is nobody and no goods beneath the stair. When
a rollover is inevitable, loosen the armrest and dodge in time.
Personnel shall avoid from the side.
3.7.4 Going downstairs smoothly
will indicate that the support wheel is
in automatic mode） , use 1 gear speed
to move forward slowly. During the
process, the crawler will slowly
descend. When the crawler
completely falls on the stairs, the rear
support wheel will automatically
retract.
Note: The automatic
extension mode of the support wheel
is turned off after CT420SC leaves the
landing
When CT420SC gets off the edge
of the platform totally and goes
down stably, cancel automatic
mode. If the base of CT420SC is
unstable when going downstairs,
adjust to rotating mode by
hand-held controller. Adjust
manually loading board rotating
angle according to different cargo
gravity so that CT420SC can go
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