ORIGINAL OPERATING INSTRUCTIONS DX 351‑CT powder-actuated fastening tool 1 These numbers refer to the corresponding illustra- It is essential that the operating instructions tions. The illustrations can be found on the fold-out cover are read before the tool is operated for the pages.
2.2 Through-shot and ricochet safety device Manual). The tool utilizes a captive piston to provide optimum As a result of the piston principle, the DX 351-CT is functional reliability and working safety. The tool features classified as a low-velocity tool. Most excess driving automatic piston return and cartridge transport powered energy is dissipated inside the tool.
3 Consumables NOTE Not all of the products listed in the following tables are available in all countries. Please contact Hilti in your country for further information or check the Hilti catalog for details of the products available. DX 351-CT powder-actuated fastening tool...
Never attempt to use the tool without first receiv- repaired or replaced properly at a Hilti service ing proper instruction on its use and observance center unless otherwise indicated in the operat- of the associated safety precautions.Contact your...
If necessary, have the tool repaired at an authorized Hilti service center. Check the piston and piston brake for wear and ensure that the parts have been fitted correctly.
Exposure to noise can cause hearing loss. NOTE For detailed information, please ask your local Hilti repre- WARNING sentative for a copy of the applicable technical guidelines Never make the tool ready to fire by pressing it against a or national technical regulations.
Never use grease for the maintenance/lubrication of parts of the tool. This may lead to malfunctions. Use 7.5 Changing the piston and piston brake 8 9 only Hilti lubricant spray or a product of equivalent WARNING quality. All cartridges must be removed from the tool. Ensure that there is no fastener in the fastener guide.
If necessary, the tool Do not use a spray or steam/water jet system for cleaning. should be repaired by Hilti Service. Never operate the tool when the ventilation slots are blocked. Do not permit foreign objects to enter the interior of the tool.
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The tool is fouled with dirt and Clean the tool. residues. The piston is broken. Change the piston. The tool is damaged. Contact Hilti. The tool remains compressed The tool is fouled with dirt and Clean the tool. (does not extend to original residues.
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WARNING Do not attempt to forcibly remove cartridges from the magazine strip or tool. Contact Hilti. The tool is damaged. Contact Hilti. The cartridge strip melts. The tool is pressed against the work- Fire the tool sooner after pressing it ing surface for too long before firing.
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Fault Possible cause Remedy The piston jams in the fastener The piston is damaged. Unscrew the black housing. guide. Check the piston and replace it if nec- essary. Use of excessively high driving power Reduce the driving power. on steel. Firing the tool at a high power setting Avoid firing the tool without a fastener without a fastener loaded.
10 Disposal Most of the materials from which Hilti tools or appliances are manufactured can be recycled. The materials must be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for taking back old tools and appliances for recycling.
11 Manufacturer’s warranty - tools Hilti warrants that the tool supplied is free of defects in Additional claims are excluded, unless stringent na- material and workmanship. This warranty is valid so long tional rules prohibit such exclusion. In particular, Hilti...
Variations in operating conditions may cause deviations from these emission values. 14.2 Vibration Further information about user health and safety can be found at www.hilti.com/hse. Total vibration in accordance with 2006/42/EC does not exceed 2.5 m/s².
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