Installation requirements of Expansion bolts

1)please refer to tab. 3 for the size of the holes perforated in the ceiling for the upper cover plate of the ceiling lamp rotary lift to be screwed to the ceiling concrete slab with the four expansion bolts.  If the perforation is obstructed by steel bars, please use the spare holes on the square plate.  The holes not used must be filled with cement or adhesive so that the strength of adjacent holes would not be affected.

2)Screw the expansion bolts in order and ensure that the pressure on each bolt is balanced. Refer to tab. 2 for nut tightening torques.

Expansion bolts installation
Screw the upper cover plate (Square) of the ceiling lamp rotary lift to the ceiling concrete slab directly with the four expansion bolts. This method of installation applies to lamps less than 150kg.