Dewalt DW03601 Instruction Manual - Page 9

Checking Laser Accuracy 4. Push the battery compartment cover closed until it snaps in E place (Figure B 4 ). When the laser is not in use, keep the Power/Transport Lock switch in the center (OFF) position (Figure A 2 ) to save battery power. The laser tools are sealed and calibrated at the factory. It is recommended that you perform an accuracy check prior to using the laser for the first time (in case the laser was exposed to extreme temperatures) and then regularly to ensure the accuracy of your work. When performing any of the Turning the Laser On accuracy checks listed in this manual, follow these guidelines: 1. Place the laser on a smooth, flat, level surface, with the laser facing straight ahead toward the opposing wall (0º position). 2. Turn the laser ON to display a horizontal laser beam. • Use the largest area/distance possible, closest to the operating distance. The greater the area/distance, the easier to measure the accuracy of the laser. • Place the laser on a smooth, flat, stable surface that is level in both directions. Either: • Mark the center of the laser beam (dot). • Move the Power/Transport Lock switch to the left to keep the pendulum locked and display the cross beams in manual mode (Figure A 1 )). • Move the Power/Transport Lock switch to the right to unlock the pendulum and display the cross beams in self-leveling mode (Figure A 3 )). Horizontal Beam - Scan Direction Checking the horizontal scan calibration of the laser requires two walls 30′ (9m) apart. It is important to conduct a calibration check using a distance no shorter than the distance of the applications for which the tool will be used. 3. Press (Figure A 4 ) once to display a horizontal laser beam, a second time to display a vertical beam, and a third 1. Place the laser against the end of the wall (Figure D 1 ). time to display both the horizontal and vertical beams. 2. Move the Power/Transport Lock switch to the right (Figure 4. Check the laser beams. • If the laser is tilted so much that it cannot self-level (> 4°), or the laser is not level in manual mode, the laser A 3 ) to turn the laser ON in self-leveling mode and display a horizontal laser beam. 3. At least 30′ (9m) apart along the laser beam, mark a and beams will flash. b. • If the laser beams flash, the laser is not level (or plumb) 4. Turn the laser 180º. and should NOT BE USED for determining or marking level or plumb. Try repositioning the laser on a level surface. 5. Adjust the height of the laser so the center of the beam is aligned with a (Figure D 2 ). 5. If ANY of the following statements are TRUE, continue with the instructions for Checking Laser Accuracy BEFORE 6. Directly above or below b , mark c along the laser beam (Figure D 3 ). USING THE LASER for a project. 7. Measure the vertical distance between b and c . • This is the first time you are using the laser (in case the laser was exposed to extreme temperatures). • The laser has not been checked for accuracy in a while. 8. If your measurement is greater than the Allowable Distance Between b and c for the corresponding Distance Between a and b in the following table, the laser must be serviced at an authorized service center. • The laser may have been dropped. Distance Between a and b Allowable Distance Between b and c 30′ (9m) 40′ (12m) 50′ (15m) 5/32" (4mm) 7/32" (6mm) 5/16" (8mm) 9