DeWalt DW0822 - Operating Tips; Battery Life Extension; Accuracy Checks; Positioning and Environment

ENGLISH
11
OPERATING TIPS
• To extend battery life, turn the laser off when it is not inuse.
• To ensure the accuracy of your work, check the laser calibration often. Refer to Checking
LaserAccuracy.
• Before attempting to use the laser, make sure it is positioned securely, on a smooth, flat
stable surface that is level in bothdirections.

CAUTION: To reduce the risk of serious injury, never stare directly into the laser beam
with or without these glasses. Refer to Accessories for importantinformation.
• Always mark the center of the beam created by thelaser.
• Extreme temperature changes can cause movement or shifting of building structures,
metal tripods, equipment, etc., which can effect accuracy. Check your accuracy often
whileworking.
• If the laser has been dropped, check to make sure your laser is still calibrated. Refer to
Checking LaserAccuracy.
To Turn the Laser On and Off (Fig.C, D)
1. Unlock unit by sliding Lock/Power‑Unlock bar
6
to theright.
2. With the laser off, place it on a flat surface. This model has three ON/OFF buttons, one for a
horizontal laser line
3
, one for a vertical laser line
4
, and one for the plumb laser spots
5
.
Checking Laser Accuracy
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 accuracy checks listed in this manual, follow these guidelines:
• 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.
• Mark the center of the laserbeam.