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ORIGINAL OPERATING INSTRUCTIONS DX 351‑CT powder-actuated fastening tool It is essential that the operating instructions are read before the tool is operated for the first time. Always keep these operating instructions together with the tool. Ensure that the operating instructions are with the tool when it is given to other persons.
Never point the tool toward yourself or other persons. d) Never press the nosepiece of the tool against your hand or against any other part of your body (or other person’s hand or part of their body). e) Keep other persons, especially children, away from the area in which the work is being carried out. f) Keep the arms slightly bent while operating the tool (do not straighten the arms). Stop using the tool immediately if you experience pain or discomfort. c) en 1.1.
b) Always wear gloves if the tool has to be dismantled for cleaning or maintenance before it has been allowed to cool down. c) The tool must be allowed to cool down if the plastic cartridge strip begins to melt. 1.1.8 Electrical safety precautions Never use force when attempting to remove cartridges from the tool. d) Unused cartridges must be stored in a dry, high place, locked up or out of reach of children. c) 1.1.
3 Description 3.1 Use of the product as directed en The Hilti DX 351‑CT is a powder-actuated tool designed for driving nails into concrete, steel and other materials suitable for DX fastening (see Fastening Technology Manual). The tool utilizes a captive piston to provide optimum functional reliability and working safety. The tool features automatic piston return and cartridge transport powered by gas pressure resulting from operation of the tool.
Additional accessories Ordering designation 3FT extension X‑PT CT‑351 3FT 1FT extension X‑PT CT‑351 1FT Woven fabric shoulder bag X‑PT CT Cartridge type Ordering designation Heavy 6.8/11 M red Medium 6.8/11 M yellow Light 6.8/11 M green en 5 Technical data Right of technical changes reserved. Description Weight Dimensions (L x W x H) DX 351‑CT tool (main unit, piston, fastener guide) X‑PT CT‑351 grip 2.7 kg (5.95 lb) 0.9 kg (2 lb) 3FT extension 0.5 kg (1.2 lb) 1FT extension 0.
7 Operation 1. 2. en 3. 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 propellant charge.
Check to ensure that the fastener is inserted correctly. Any fasteners which fail to hold or are incorrectly driven must be replaced. Base material: Concrete Fasteners: X‑CW C27; X‑CW C32; X‑CW U22; X‑CW U27 Fastening quality: The head of the nail must press the sleeve against the working surface. Nail stand-off: 5 ‑ 7 mm (0.2" ‑ 0.27") 1. 2. 3. 4. 7.4.3 Instructions for use of the X‑CC 7 Recommended fastener guides: X‑FG8S351; X‑FG8ME‑351 Insert the X‑CC fastener in the fastener guide.
8.1 Care of the tool en Clean the outside of the tool at regular intervals with a slightly damp cloth. NOTE Do not use a spray or steam/water jet system for cleaning. Never operate the tool when the ventilation slots are blocked. Do not permit foreign objects to enter the interior of the tool. 8.2 Maintenance Check all external parts of the tool for damage at regular intervals and check that all controls operate faultlessly.
Fault Possible cause Remedy The fastener is not driven deep enough. Fastener driving power is too low. Increase fastener driving power in accordance with recommendations or, respectively, use a more powerful cartridge. The fastener used is too long. Use a shorter fastener if permissible. The tool is fouled with dirt and residues. Clean the tool. The piston is broken. Change the piston. The tool is damaged. Contact Hilti. The tool is fouled with dirt and residues. Clean the tool.
Fault Possible cause Remedy The cartridge strip cannot be removed. The tool is damaged or has overheated as a result of an excessively high fastener driving rate. Allow the tool to cool. Subsequently remove the cartridge strip carefully from the tool. WARNING Do not attempt to forcibly remove cartridges from the magazine strip or tool. Contact Hilti. The tool is damaged. Contact Hilti. The tool is pressed against the working surface for too long before firing.
Fault Possible cause Remedy The piston jams in the fastener guide. The piston is damaged. Unscrew the black housing. Check the piston and replace it if necessary. Use of excessively high driving power on steel. Reduce the driving power. Firing the tool at a high power setting without a fastener loaded. Avoid firing the tool without a fastener loaded. Hard and/or large aggregates in the concrete. Use a shorter fastener if permissible. A rebar is located just below the concrete surface.
Fault Possible cause Remedy Nail breakage. Driving power is too low. Increase driving power or use a more powerful cartridge. The application limits have been exceeded (very hard material). Use a stronger nail. Unused cartridge problem. The tool is not pressed fully against the working surface. Press the tool fully against the working surface and then pull the trigger. Considerable force is required to unscrew or refit the locking sleeve. Dirt or deposits on the screw thread. Clean the thread.
11 Manufacturer’s warranty - tools Please contact your local Hilti representative if you have questions about the warranty conditions. en 12 EC declaration of conformity (original) Designation: Type: Powder-actuated fastening tool DX 351‑CT Generation: Year of design: Hilti Corporation, Feldkircherstrasse 100, FL‑9494 Schaan 01 2008 We declare, on our sole responsibility, that this product complies with the following directives and standards: 2006/42/EC, 2011/65/EU.
Declared measured values of noise characteristics according to 2006/42/EC Machinery Directive in conjunction with DIN EN 15895 110 dB (A) Noise (power) level, LWA, 1S 1 en Emission noise-pressure level in the work station, LpA, 1s 2 Peak sound pressure emission level, LpC, peak 3 97 dB (A) 127 dB (C) 1 ± 2 dB (A) 2 ± 2 dB (A) 3 ± 2 dB (C) Operation and set-up conditions: Set-up and operation of the pin driver in accordance with E DIN EN 15895-1 in the semi-anechoic test room of Müller-BBM GmbH.
Hilti Corporation Printed: 17.04.2014 | Doc-Nr: PUB / 5126210 / 000 / 02 388037 / A4 388037 Hilti = registered trademark of Hilti Corp., Schaan W 3557 | 0414 | 00-Pos. 3 | 1 Printed in Liechtenstein © 2014 Right of technical and programme changes reserved S. E. & O. *388037* LI-9494 Schaan Tel.: +423 / 234 21 11 Fax:+423 / 234 29 65 www.hilti.
