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*2338162*
2338162
English
31
Malfunction
Possible cause
Action to be taken
The cartridge doesn’t fire
Not fully pressed against the work
surface.
▶
Press the fastening tool fully
against the work surface and
then pull the trigger.
Firing pin damaged.
▶
Contact
Hilti
Service.
Insufficient nail stand-off
Driving energy too high.
▶
Select the appropriate cartridge
power level for the application
Wrong piston inserted.
▶
Use the correct equipment
configuration with compatible
piston and fastener.
The piston is worn.
▶
Replace the piston, stop ring
and friction ring.
Insufficient driving depth
Space between metal sheet and
profile.
▶
Avoid gaps between profile and
beam, or secure the beam on
the correct side.
Excessive nail stand-off
Fastener driven into the rib of the
beam (possibly with shear break-
age).
▶
Check the piston; replace the
piston if necessary. Also check
for residues.
Supporting material is too thick, or
the thickness has changed.
▶
Select the appropriate cartridge
power level for the application.
Fastener driving power is too low.
▶
Select the appropriate cartridge
power level for the application.
▶
Increase driving energy in
accordance with cartridge
recommendations or use a
more powerful cartridge.
Excessive build-up of foreign mat-
ter on the fastening tool.
▶
Clean the fastening tool.
The piston is worn.
▶
Replace the piston, stop ring
and friction ring.
Fastening tool is damaged.
▶
Contact
Hilti
Service.
Wrong piston inserted.
▶
Use the correct equipment
configuration with compatible
piston and fastener.
Nail stand-off varies consid-
erably
The fastening tool was rammed
hard against the working surface.
▶
Avoid ramming the fastening
tool against the work surface.
Irregular, partly incomplete cycling.
▶
Cycle the tool completely.
Irregular driving energy.
▶
Service the tool.
▶
Contact
Hilti
service.
Shear breakages
The face of the piston is worn or
chipped (see the section headed
"Criteria for replacement of wear
parts").
▶
Replace the piston, stop ring
and friction ring. → page 29
Fastener driven into the rib of the
beam (possibly with shear break-
age).
▶
Check the piston; replace the
piston if necessary. Also check
for residues.
Summary of Contents for DX 450
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