Hilti DX E?72 Operating Instructions Manual page 17

Fault
The piston gets stuck in the
base material / fastener is
driven too deeply.
en
The fastener is not driven
deeply enough.
The nail bends.
Concrete spalling.
28
Possible cause
The fastener is too short.
The fastener has no washer.
Driving power is too high.
The fastener is too long.
Driving power is too low.
Hard surface or hard and/or large ag-
gregates in the concrete.
A rebar is located just below the con-
crete surface.
Hard/old concrete.
Hard surface or hard and/or large ag-
gregates in the concrete.
Remedy
Use a longer fastener.
Use a fastener with washer for applic-
ations on wood.
Use a less powerful cartridge.
Use a shorter fastener.
NOTE
Observe the min. fastener driving
depth requirements. Ask you local
Hilti sales and service office for a
copy of the Hilti Fastening Techno-
logy Manual.
Use a more powerful cartridge.
Use a more powerful cartridge.
Use the DX-Kwik method (predrilling).
Use a shorter nail.
Use a nail with a higher application
limit.
Use the DX-Kwik method (predrilling).
Drive the fastener at a different posi-
tion.
Use a shorter nail.
Use a more powerful cartridge.
Use the DX-Kwik method (predrilling).