Hilti DX 5 Manual página 37

Malfunction
The fastener is not driven
flush.
Concrete spalling.
Damaged fastener head.
7.3 Problems with fasteners to be driven into steel
Malfunction
Damaged fastener head.
The fastener doesn't pene-
trate deep enough.
The fastener doesn't hold in
the base material.
2211871
*2211871*
Printed: 30.05.2018 | Doc-Nr: PUB / 5433084 / 000 / 00
Possible cause
A rebar is located just below the
concrete surface.
Hard surface (steel, concrete).
Hard/old concrete.
Hard aggregates in concrete
Driving power is too high.
The wrong piston has been fitted.
The piston is damaged.
Possible cause
Driving power is too high.
The wrong piston has been fitted.
The piston is damaged.
Driving power is too low.
The application limits have been
exceeded (very hard material).
The system is unsuitable.
Thin supporting steel (4­5 mm).
Action to be taken
▶ Use a shorter nail.
▶ Use a nail with a higher
application limit.
▶ Drive the fastener in at a
different position.
▶ Increase driving power (adjust
power regulating wheel).
▶ Driving threaded studs: Spall
stop: X-SS...
▶ Use a more powerful cartridge.
▶ Use the single-fastener tool
instead of the magazine tool.
▶ Reduce driving power (adjust
the power regulating wheel).
▶ Use a less powerful cartridge.
▶ Use the nails with a "top hat".
▶ Use the nails with a washer.
▶ Check that the right combina-
tion of piston and fastener is
used.
▶ Change the piston.
Action to be taken
▶ Reduce driving power (adjust
the power regulating wheel).
▶ Use a less powerful cartridge.
▶ Use the nails with a "top hat".
▶ Use the nails with a washer.
▶ Check that the right combina-
tion of piston and fastener is
used.
▶ Change the piston.
▶ Increase driving power (adjust
power regulating wheel).
▶ Use a more powerful cartridge.
▶ Use a nail with a higher
application limit.
▶ Use the single-fastener tool
instead of the magazine tool.
▶ Use shorter nails.
▶ Use a more powerful system ,
e.g. DX 76 (PTR).
▶ Use a different power setting or
different cartridge power level.
▶ Use a nail suitable for thin
supporting steel.
English 29