Hilti DX 35 Mode D'emploi page 34

Fault
Concrete spalling.
Damaged nail head.
The nail doesn't penetrate
deeply enough.
The nail doesn't hold in the
base material.
Possible cause
Hard/old concrete.
Hard and/or large aggregates in the
concrete.
A rebar is located just below the con-
crete surface.
Driving power is too high.
Application limit exceeded (very hard
material).
The piston is damaged.
Driving power is too low.
Application limit exceeded (very hard
material).
The system is unsuitable.
Thin steel base material (< 4 mm)
Remedy
Use a shorter nail.
Use a more powerful cartridge.
If necessary, use a more powerful tool
and nails with a higher application
limit (e.g. DX 460 with X-U nails).
Use a shorter nail.
Use a nail with a higher application
limit.
Use a less powerful cartridge.
Use a nail with a higher application
limit.
Change the piston.
Use a more powerful cartridge.
Use a nail with a higher application
limit.
Use a more powerful system, e.g.
DX 76 (PTR).
Use a different cartridge.
Use a nail suitable for thin steel base
material.
en
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