Assessments - 3, GPA: 5
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In hammer drilling mode, the tool simultaneously rotates and impacts the work. This mode is appropriate for all concrete and masonry operations. In the FIG. 7 FIG. 6 hammering-only mode, the spindle-lock on the tool is engaged. The tool only impacts the work without rotating. This mode is appropriate for light chipping, chiseling and demolition applications. NOTE: In impact-only mode, the hammer can also be used as a lever to free a jammed drill bit. To select the required operating mode, rotate the selector lever over the safety lock until it covers the correct symbol. SERVICE AND POWER INDICATOR LEDS (D25600, D25650) The red service indicator LED lights up when the carbon brushes are nearly worn out to indicate that the tool needs servicing. After approximately 8 hours of use the motor will automatically be shut off. Take the tool to a DEWALT service location for routine inspection and maintenance. DRILLING WITH A SOLID BIT 1. Set the speed and impact control dial. 2. Set the model selector to the “hammer drilling” position (for all units except D25550). 3. Insert the appropriate drill bit. 4. Fit and adjust the side handle. 5. If necessary, set the drilling depth rod. 6. Mark the spot where the hole is to be 7. Place the drill bit on the spot and press the 8. Push with only enough force so that the hammer The hammer only needs enough pressure or mechanism. Pushing harder will not make the hammer 9. To stop the tool, release the ON/OFF switch. Always when work is finished and before unplugging. DRILLING WITH A CORE BIT 1. Turn the speed and impact control dial to the maximum torque position. (D25550, D25500, D25551, D25600, D25650, ) 2. Set the model selector to the “hammer drilling,” position (for all units except D25550). 3. Fit and adjust the side handle. 4. Assemble the centering bit and adapter shank into core bit. 5. Mark the spot where the hole is to be drilled. 6. Place the centering bit on the spot and press the ON/OFF switch. NOTE: Some core drills require the removal of centering bit after about 1 cm of penetration. If so, remove and continue drilling. 7. When drilling through a structure thicker than the depth of the core bit, break away the round cylinder of concrete or core inside the bit at regular intervals. To avoid unwanted breaking away of concrete around the hole, first drill a hole the diameter of the centering bit completely through the structure. Then drill the cored hole halfway from each side of the structure. 8. To stop the tool, release the ON/OFF switch. Always turn the tool off when work is finished and before unplugging. CHIPPING AND CHISELING 1. Set the model selector to the “hammering only with spindle lock” position (all models except D25550). 2. Set the impact control dial to desired impact energy. 3. Insert the appropriate chisel and rotate it by hand to lock it into the desired position. For spline units, use a 3/4” hex x 21/32” round insert tool and for SDS Max models use SDS Max insert tools. 4. Fit and adjust the side handle. 6 582429-00/D25500 etc 1/29/03 9:29 AM Page 7 5. Press the ON/OFF switch and start 6. Push only with enough force to keep ...
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