Poly-Tex CD8000 - Manual (Page 5)

ONCE THE DISPLAY IS IN PLACE, ALL CASTERS MUST BE LOCKED
INTO PLACE USING THE CASTER BRAKES TO PREVENT DISPLAY
MOVEMENT. THE BRAKE IS ACTIVATED BY ROTATING THE LEVER
FROM THE "OFF" POSITION TO THE "ON" POSITION AS SHOWN.
1. SLIDE SIGN POST INTO TOP OF DISPLAY. SLIDE SIGN HOLDER ONTO TOP OF
SIGN POST.