Hilti DX 450 Manual Del Usuario página 36

Malfunction
Shear breakages
Fastening tool does not ex-
tend
Firing not possible
No fastener driven
Fastener guide cannot be
fully installed.
Piston cannot be installed.
32 English
Possible cause
Fastener driven at unsuitable posi-
tion (where base material too thick,
at edge or curved profiles).
Piston jams in piston brake.
Cartridge strip jams, fastening tool
is overheated.
Fastening tool was not cycled cor-
rectly, the cycling grip is not in the
initial position.
The trigger is pulled before the tool
is pressed fully against the working
surface.
Fastener transport malfunctions.
Fastening tool is damaged.
Fastening tool was not cycled cor-
rectly, the cycling grip is not in the
initial position.
No fastener loaded.
No piston installed in the fastening
tool.
The piston is broken.
Piston does not return.
The fastener guide needs to be
cleaned.
Fasteners are jammed in the fas-
tener guide.
The fastener guide needs to be
cleaned.
Fastening tool, especially the pis-
ton guide, is dirty.
Action to be taken
▶ Check the fastener recommen-
dation. If the type of fastener is
correct, increase driving energy
in accordance with cartridge
recommendations or use a
more powerful cartridge.
▶ Disassemble the fastening tool.
→ page 28
▶ Replace the piston, stop ring
and friction ring.
▶ See the "Cartridge strip cannot
be removed" fault. Adhere to
the maximum fastener driving
rate.
▶ Use only recommended car-
tridges → page 22.
▶ Cycle the fastening tool com-
pletely and set the cycling grip
to the starting position.
▶ Press the fastening tool fully
against the work surface and
then pull the trigger.
▶ Remove the fastener strip.
▶ Check the fastener strip for
damage.
▶ Replace damaged fastener
strips.
▶ Contact Hilti Service.
▶ Cycle the fastening tool com-
pletely and set the cycling grip
to the starting position.
▶ Load a fastener into the
fastening tool.
▶ Install the piston in the fastening
tool.
▶ Change the piston and stop
ring.
▶ Contact Hilti Service.
▶ Service the tool.
▶ Remove jammed fasteners.
▶ Avoid shear breakages and
misfires.
▶ Service the tool.
▶ Service the tool.
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