Hilti HIT-RE 500 Manual page 57

Hilti HIT-RE 500 mortar w/
rebar (as post-installed conn.)
Setting instruction
1. Drill hole
4. Bore hole cleaning
Compressed air cleaning (CAC)
910
These pages are part of the Anchor Fastening Technology Manual issue September 2014
Review the Material Safety Data Sheet (MSDS) before use for
proper and safe handling!
Wear well-fitting protective goggles and protective gloves when
working with Hilti HIT-RE 500.
Important: Observe the installation instruction of the manufacturer
provided with each foil pack.
Note: Before drilling, remove carbonized concrete; clean contact areas
(see Annex B1)
In case of aborted drill hole the drill hole shall be filled with mortar.
Drill hole to the required embedment depth with an appropriately
sized Hilti TE-CD or TE-YD hollow drill bit with Hilti vacuum
attachment.
This drilling system removes the dust and cleans the bore hole
during drilling when used in accordance with the user's manual.
After drilling is complete, proceed to the "injection preparation" step
in the instructions for use.
Drill the hole to the required embedment depth using a hammer-drill
with carbid drill bit set in rotation hammer mode, a compressed air
drill or a diamond core machine.
(Not needed with Hilti TE-CD and Hilti TE-YD drill bit)
The borehole must be free of dust, debris, water, ice, oil, grease and
other contaminants prior to mortar injection.
Just before setting an anchor, the bore hole must be free of dust and
debris by one of two cleaning methods described below
Blowing
2 times from the back of the hole with oil-free compressed air (min. 6
bar at 100 litres per minute (LPM)) until return air stream is free of
noticeable dust. Bore hole diameter ≥ 32 mm the compressor must
supply a minimum air flow of 140 m³/hour.
If required use additional accessories and extensions for air nozzle
and brush to reach back of hole.
Brushing
2 times with the specified brush HIT-RB size (brush Ø ≥ borehole Ø)
by inserting the round steel brush to the back of the hole in a twist ing
motion. The brush shall produce natural resistance as it enters the
anchor hole. If this is not the case, please use a new brush or a
brush with a larger diameter.
Blowing
2 times again with compressed air until return air stream is free of
noticeable dust.
If required use additional accessories and extensions for air nozzle
and brush to reach back of hole.
09 / 2014