Appendix A ________________________________________________________ Options Installation
VAISALA ______________________________________________________________________ 283
0401-068
Figure 152 Positioning Drilling Holes
2. Drill three 20 mm holes with a depth of 70 mm using the drilling
template. Make sure that the holes are drilled perfectly
perpendicular.
3. Remove the template and clean the holes.
4. Insert the dowels into the holes and hammer them down until their
edges are on the foundation level. Recommended dowels: HILTI
HKD-S M16 x 65.
5a. Use the HILTI tool HSD-G M16 x 65 respectively a 14 mm
mandrel bar and hammer the expanding mechanism of the wedge
bolts down until the bolts are completely fixed inside the holes.
5b. Fasten the frangible mounting rods/foundation screws to the
inserted dowels by hand.
6. Check the right orientation of the foundation screws. The breaking
area (area with smaller diameter → contraction area) just above the
welded nut on the frangible mounting rods/foundation screws must
point upwards.
7. Place a washer between the foundation surface and the welded nut
(see Figure 153 on page 284).
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