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2. If the cartridge still does not fire, wait for 30 seconds and then lift the fastening tool away from the work
surface.
3. Immediately pull the cartridge strip out of the fastening tool.
▶ If the cartridge strip cannot be removed:
▶ Allow the fastening tool to cool down at a safe location under observation.
▶ Contact Hilti Service.
4. Service the tool. → page 11
5. Move the cartridge to a safe location.
6. Dispose of the cartridges that have not fired.
▶ Comply with the locally applicable disposal regulations.
7. Allow the fastening tool to cool down and resume work with a new cartridge strip.
7.3
The cartridge does not fire when the fastening tool is at operating temperature
After 2-3 misfires, i.e. no clearly audible firing sound and fasteners are not driven or not driven adequately,
please proceed as follows:
1. Keep the fastening tool pressed against the work surface for at least 30 seconds and trigger the fastening
tool again.
2. If the cartridge still does not fire, wait for 30 seconds and then lift the fastening tool away from the work
surface.
3. Stop using the tool immediately and remove the cartridge strip.
4. Disassemble the fastening tool. → page 7
5. Check that you are using the correct combination of fastener guides, piston, fasteners and cartridge.
6. Check piston brake and piston for wear; replace the components as necessary. → page 11
7. Clean and oil the fastening tool. → page 11
▶ If the problem persists after the measures described above have been taken, further use of the
fastening tool is not permissible.
▶ Have the fastening tool checked and, if necessary, repaired by Hilti Service.
Dirt and residues build up in the tool under normal operating conditions and functional parts are
also subject to wear.
Service the tool at regular intervals → page 11. Check the piston and piston brake daily if the
fastening tool is used intensively, or at the latest after every 2500 to 3000 fasteners. The interval
corresponds to the regular cleaning cycle of the fastening tool. The service and cleaning cycles
are based on typical tool use.
When 30,000 fasteners have been driven, have the tool fully serviced by Hilti Service.
8
Care and maintenance
8.1
Care of the fastening tool
For cleaning, use only the cleaning accessories supplied by Hilti, or material of equivalent quality. Do not,
under any circumstances, use spray cleaning equipment, compressed air, high-pressure cleaning equipment,
solvents or water for cleaning.
For maintenance and lubrication of the fastening-tool components, always use Hilti spray. Never use
greases, because the use of greases can lead to malfunctions of the fastening tool.
Do not apply oil to the switchgear box. Prevent oil and Hilti spray from entering the switchgear box.
Lubricant penetrating inside the switchgear box can lead to malfunctions.
CAUTION
Risk of damage to the fastening tool! Foreign bodies can jam in the fastening tool and damage the
fastening tool when a cartridge is fired.
▶ Prevent foreign bodies from penetrating into the interior of the fastening tool.
▶ Clean the exterior of the fastening tool with a slightly damp cloth at regular intervals.
▶ Keep the air vents clear and operate the fastening tool only with clear air vents.
10
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