Siemens UL 1066 Operating Instructions Manual page 257

Size
5
3,5 Nm
31 lb-in
1 Using a hexagon socket screwdriver (or equivalent), screw the shutter spring assemblies and the shutter subassembly together.
When setting the screws in place, hold the shutter steady by its corners. Tighten the 8 screws with 31 lb-in ±10%.
(1) Torque wrench for tightening torque 31 lb-in ± 10%
1 Use a torque wrench to ensure that the eight screws are tightened to a torque of 31 lb-in ± 10%.
2 Carry out a visual check that the shutter assembly installation looks sqare and 4 trumpets are parallel to side walls. Inspect for any
crack or bending signs on the four corner of the shutter guides or shutter sliding windows. Inspect for and remove any loose parts,
e.g. springs, screws etc.
1
(1)
2
18 – 7