User's Manual

CHCNAV ALPHAUNI 900 USER MANUAL | 2020-06 P a g e | 16
3.5.2.2 Extension platform
The roof rack extension platform is easy to assemble, and it also can easily solve “laser scanner
is covered” problem.
The installation steps are simple: Firstly, using 4 manufacture standard M8 screws to fix roof
rack and vehicle cross-bar (THULE brand is recommended). Then, unscrew the screws of roof
rack and adjust the extension length. The maximum length is 400mm which divided into 4
sections and each section is 100mm. The brand of vehicle cross-bar is chosen as THULE and
the maximum load weight is 70kg. Turning in clockwise direction to unscrew thumb screws
and turning in anti-clockwise direction to lock thumb screws.