Troubleshooting - Hilti DX 351-BT Manual

3. Check the driven fastener with the test gauge and, if necessary, adjust the driving energy.
Follow the instructions for correct use of the test gauge in the operating instructions of the fastener.
4. Continue driving test fasteners until the sealing washer of the fastener achieves a good seal and the
fastener achieves the correct driving depth.
6.2 Driving a fastener
CAUTION
Risk of injury due to electric shock! Driving fasteners into concealed electrical wiring leads to the risk of
an electric shock.
▶ Check that there is no concealed electrical wiring in the work area.
▶ Always hold the fastening tool by the black parts of the grip section.
▶ Check the insulated gripping surfaces for damage at regular intervals.
Before starting work, familiarize yourself with the characteristics of the fastener to be used and with the
technical specifications for the application. Read the operating instructions of the relevant fastener.
1. Insert a fastener into the fastener guide.
2. Select the appropriate driving energy for your application. → page 23
3. Mark the attachment point.
4. Drill a hole until the stepped drill bit cuts a bright ring in the base material.
Never regrind a stepped drill bit. Otherwise the system function cannot be achieved.
5. Clean the drillhole.
6. Position the threaded stud directly in the drilled hole.
7. Hold the fastening tool perpendicular to the working surface and then press it at right angles against the
surface.
8. Drive the fastener by pulling the trigger.
7

Troubleshooting

DANGER
Risk of injury by unsecured fastening tool! If the fastening tool jams in the compressed state or if a
cartridge does not fire, the fastening tool might be loaded with the safety off. Unintentional triggering can
cause severe injuries.
▶ At all times, make sure that the fastening tool is not pointing toward you or anyone else.
▶ Make sure that the fastening tool cannot be fired accidentally and do not hold your hand in front of the
muzzle of the fastener guide.
▶ Keep a fastening tool with the safety off under observation at all times.
▶ Free the jammed components. → page 24
▶ After 2-3 misfires, i.e. no clearly audible firing sound and fasteners are not driven or not driven adequately,
please proceed as follows: → page 25
▶ If a cartridge does not fire, proceed as follows: → page 25
7.1 Fastening tool jams and does not extend
DANGER
Risk of injury by unsecured fastening tool! If the fastening tool jams in the compressed state or if a
cartridge does not fire, the fastening tool might be loaded with the safety off. Unintentional triggering can
cause severe injuries.
▶ At all times, make sure that the fastening tool is not pointing toward you or anyone else.
▶ Make sure that the fastening tool cannot be fired accidentally and do not hold your hand in front of the
muzzle of the fastener guide.
▶ Keep a fastening tool with the safety off under observation at all times.
24 English
9
377627
*377627*