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Anleitung Zusammenfassung
The operator must not hold the trigger pulled on contact trip tools except during fastening operation, as serious injury could result if the trip accidentally contacted someone or something, causing the tool to cycle. Keep hands and body away from the discharge area of the tool. A contact trip tool may bounce from the recoil of driving a fastener and an unwanted second fastener may be driven, possibly causing injury. 3. SEQUENTIAL TRIP OPERATION: The SEQUENTIAL TRIP MODEL contains a contact trip that operates in conjunction with the trigger to drive a fastener. To operate a sequential trip tool, first position the contact trip on the work surface WITHOUT PULLING THE TRIGGER. Depress the contact trip and then pull the trigger to drive a fastener. As long as the contact trip is contacting the work and is held depressed, the tool will drive a fastener each time the trigger is depressed. If the contact trip is allowed to leave the work surface, the sequence described above must be repeated to drive another fastener. -7 TOOL OPERATION CHECK: CAUTION: Remove all fasteners from tool before performing tool operation check. 1. TRIGGER OPERATED TOOL: A. With finger off the trigger, hold the tool with a firm grip on the handle. B. Place the nose of the tool against the work surface. C. Pull the trigger to drive. Release the trigger and cycle is complete. CAUTION: THE TOOL WILL CYCLE EACH TIME THE TRIGGER IS PULLED! 2. CONTACT TRIP OPERATION: A. With finger off the trigger, press the contact trip against the work surface. THE TOOL MUST NOT CYCLE. B. Hold the tool off the work surface, and pull the trigger. THE TOOL MUST NOT CYCLE. C. With the tool off the work surface, pull the trigger. Press the contact trip against the work surface. THE TOOL MUST CYCLE. D. Without touching the trigger, press the contact trip against the work surface, then pull the trigger. THE TOOL MUST CYCLE. 3. SEQUENTIAL TRIP OPERATION: A. Press the contact trip against the work surface, without touching the trigger. THE TOOL MUST NOT CYCLE. B. Hold the tool off the work surface and pull the trigger. THE TOOL MUST NOT CYCLE. Release the trigger. The trigger must return to the trigger stop on the frame. C. Pull the trigger and press the contact trip against the work surface. THE TOOL MUST NOT CYCLE. D. With finger off the trigger, press the contact trip against the work surface. Pull the trigger. THE TOOL MUST CYCLE. IN ADDITION TO THE OTHER WARNINGS CONTAINED IN THIS MANUAL OBSERVE THE FOLLOWING FOR SAFE OPERATION • Use the BOSTITCH pneumatic tool only for the purpose for which it was designed. • Never use this tool in a manner that could cause a fastener to be directed toward the user or others in the work area. • Do not use the tool as a hammer. • Always carry the tool by the handle. Never carry the tool by the air hose. • Do not alter or modify this tool from the original design or function without approval from BOSTITCH, INC. • Always be aware that misuse and improper handling of this tool can cause injury to yourself and others. • Never clamp or tape the trigger or contact trip in an actuated position. • Never leave a tool unattended with the air hose attached. • Do not operate this tool if it does not contain a legible WARNING LABEL. • Do not continue to use a tool that leaks air or does not function properly. Notify your nearest Bostitch representative if your tool continues to experience functional problems. -8 BASIC TOOL OPERATION Bostitch pneumatic tools are cycled by a compressed air operated single piston design. The following illustrations show the four functional cycles that occur when the tool is operated to drive a fastener: FIG.1 AT REST EXHAUST OPEN HEAD VALVE CLOSED SLOTS FOR AIR FLOW FOR PISTON RETURN TRIGGER VALVE RELEASED PASSAGE FOR AIR RELEASED FROM HEAD VALVE TRIGGER VALVE PORT (TO SUPPLY AIR TO TOP OF HEAD VALVE) PISTON STOP RETURN CHAMBER BUMPER RESERVOIR OF HIGH PRESSURE AIR HOLES IN CYLINDER WALL RESERVOIR OF HIGH PRESSURE AIR EXHAUST SEALED BY PISTON STOP FIG.2 DRIVING STROKE HEAD VALVE TRIGGER VALVE PORT AIR RELEASED FROM ABOVE HEAD VALVE TRIGGER VALVE ACTUATED FIG.3 END OF STROKE TRIGGER STILL PULLED EXHAUST STILL CLOSED HEAD VALVE OPEN TRIGGER VALVE STILL ACTUATED AIR FLOWS INTO RETURN CHAMBER PISTON IS SEALED AGAINST BUMPER EXHAUST FIG.4 OPEN RETURNING HEAD VALVE CLOSED AIR IN RETURN CHAMBER PUSHES PISTON UPWARD TRIGGER VALVE RELEASED – AIR PRESSURE RETURNS TO TOP OF HEAD VALVE MAINTAINING THE PNEUMATIC TOOL When working on air tools, note the warnings in this manual and use extra care evaluating problem tools. CAUTION: Pusher spring (constant force spring). Caution must be used when working with the spring assembly. The spring is wrapped around, but not attached to, a roller. If the spring is extended beyond its length, the end will come off the roller and the spring will roll up with a snap, with a chance of pinching your hand. Also the edges of the spring are very thin and could cut. Care must also be taken to ...
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