Operation; Application Guidelines - Hilti DX 351-CT Mode D'emploi

7 Operation

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CAUTION
Never push back the fastener guide with the palm of
the hand, with any other part of the body or with the
nail as this presents a risk of injury.
WARNING
Driving a fastener may cause flying fragments. The user
of the tool and bystanders must wear protective
glasses and a hard hat. Flying fragments present a
risk of injury to the eyes and body.
CAUTION
The fastener driving action is initiated by ignition of a pro-
pellant charge. The user of the tool and other persons
in the immediate vicinity must wear ear protectors.
Exposure to noise can cause hearing loss.
WARNING
Never make the tool ready to fire by pressing it against a
part of the body (e.g. the hand). This could cause a nail
or the piston to be driven into a part of the body. Never
press the tool against a part of the body.
7.1 Fitting the grip to the tool 2
CAUTION
Unless national or local regulations specify a shorter
length, a maximum of 3 extensions (3 ft and / or 1 ft
extensions) may be fitted between the grip and the
tool in order to reach high ceilings. The maximum
permitted length of all extensions (not including the
grip) is 9 ft (3 m).
CAUTION
Check that the grip and extension are fitted correctly.
Push the grip onto the tool from the rear.
7.2 Operation 3 4
CAUTION
Keep your hands on the black gripping section and
avoid electric cables (risk of electric shock). Regularly
check to ensure the gripping section and extension
are in good condition.
6
Printed: 17.04.2014 | Doc-Nr: PUB / 5069830 / 000 / 03
1. Insert the fastener.
2. Push the cartridge strip, narrow end first, into the
grip of the tool from below until the full length of the
cartridge strip is inside the grip.
NOTE If the cartridge strip is already partly used,
pull it through by hand until an unused cartridge is
in position in the cartridge chamber.
3. Adjust the driving power by turning the regulating
wheel (1 = minimum power, 2 = medium power,
3 = maximum power). Start with minimum power.
Increase the power if the fastener does not penetrate
deep enough.
4. Position the tool perpendicular to the ceiling.
5. Fire the tool and drive the fastener by pushing the
grip toward the ceiling.
7.3 Changing the equipment 5
1. Pull the cartridge strip out of the tool at the cartridge
strip exit aperture.
2. Push the fastener guide firmly against the piston
guide and then screw it on in a clockwise direction
until it engages.

7.4 Application guidelines

NOTE
For detailed information, please ask your local Hilti repre-
sentative for a copy of the applicable technical guidelines
or national technical regulations.
7.4.1 Procedure if a cartridge fails to fire
If a cartridge fails to fire or misfires, always proceed as
follows:
Keep the nose of the tool pressed at right angles against
the working surface for 30 seconds.
If the cartridge still fails to fire, withdraw the tool from the
working surface, taking care to avoid pointing it toward
your body or toward bystanders.
Pull the cartridge strip through to the next cartridge
by hand. Use up the remaining cartridges on the strip
and remove the used cartridge strip from the tool. The
(partly) used cartridge strip must then be disposed of
appropriately to prevent further use or misuse of any
unfired cartridges.
7.4.2 Instructions for use of the X‑CW 6
Recommended fastener guides: X‑351‑F8CT
Use of the X‑CW fastener with other DX351 fastener
guides may result in poorer fastening quality (higher rate
of failure).
Insert the X‑CW fastener in the fastener guide.