Singercon WIE-LED-80L Manual De Instrucciones página 23

4. If you choose direct ceiling mounting, screw the brackets (4) into the
pre-drilled holes with the pins. Loosen the nut of the screw (5)
clamping the bracket (4) and insert the tube. Tighten the screw (5) to
secure the position of the bracket.
5. If you choose cable suspension installation, follow these steps:
a) Adjust the hanging height of the tube from the ceiling. To reduce the
height, pull the steel cable to the outside of the bracket. To increase
the height, press the lock marked "a" in the figure below and pull the
steel cable.
The bracket should be bolted to the ceiling by screwing it into the pre-
drilled holes with pins.
b) Fix the end of the steel cable in the bracket (4) with a double threaded
connector and nut.