Hilti HIT FP 700-R Bedienungsanleitung Seite 16

European technical assessment ETA-2 1 / 0 6 2 4
English translation prepared by CSTB
Splicing applications
Drilling aid
Drill hole cleaning
Manual Cleaning (MC) for hammer drilled holes:
for drill hole diameters d
Injection system Hilti HIT-FP 700 R for rebar connections
Intended use
Installation instruction
Measure and control concrete cover c.
c = c + d /2.
drill 0
Drill parallel to surface edge and to existing rebar.
Where applicable use Hilti drilling aid HIT-BH.
For drill holes depths > 20 cm use drilling aid.
Ensure that the drill hole is parallel to the existing rebar.
Three different options can be considered:
 Hilti drilling aid HIT-BH
 Lath or spirit level
 Visual check
Hole drilling with Hilti drilling aid HIT-BH
Just before setting the bar the drill hole must be free of dust and debris.
Inadequate hole cleaning = poor load values.
≤ 20 mm and all drill hole depths ≤ 10·ϕ.
0
The Hilti hand pump may be used for blowing out drill holes up to diameters
≤ 20 mm and drill hole depths ≤ 10·ϕ.
d
0
Blow out at least 4 times from the back of the drill hole until return air stream is free
of noticeable dust.
Brush 4 times with the specified brush (see Table B4) by inserting the steel brush
Hilti HIT-RB to the back of the hole (if needed with extension) in a twisting motion
and removing it.
The brush must produce natural resistance as it enters the drill hole
(brush Ø ≥ drill hole Ø) - if not the brush is too small and must be replaced with the
proper brush diameter.
Blow again with the Hilti hand pump at least 4 times until return air stream is free of
noticeable dust.
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Annex B9