4
How to Use the Laser System
Installing / Removing the Batteries
1. Turn battery housing screws counterclockwise and remove the
battery housing. A universal key (supplied) or small coin can be used
to turn the screws.
2. Install or remove the batteries as required.
Note:
When installing the batteries, be sure to note the positive (+) and
negative (–) diagram inside the housing. Place ribbon straps behind
the batteries for easy battery removal.
Note:
The laser has reverse-polarity protection. If the batteries are put
in wrong, no damage occurs to the laser, but it does not operate.
3. Put the battery housing in place and turn the screws clockwise to tighten.
Setting Up and Leveling the Laser
1. Set up a tripod to the height appropriate for your application needs.
2. Insert the 5/8-11 tripod screw into the laser’s 5/8-11 threaded insert.
3. Turn the screw and tighten to hold the laser securely in place.
4. Press the power switch to turn the laser on.
Note:
When the laser is initially turned on, the out-of-level LED will
flash if the laser needs leveling.
5. Using the left-thumb rule (seethe Note that follows),
turn both X axis screws equal amounts in opposite
directions to move the level bubble to the center of
the bull’s-eye.
Note:
Left-thumb rule - both thumbs in, both thumbs
out, the bubble follows the direction of the left thumb.
6. Observe the location of the bubble (top or bottom of
the bull's-eye) and using the left-thumb rule, turn the
Y axis screw to move the level bubble to the center of
the bull's-eye.
Note:
When the laser is level, the bubble is centered in
the bull’s-eye and the out-of-level LED stops flashing and the laser’s
rotor begins rotating.
Note:
If the laser is knocked out of its self-leveling range, the out-of-level
LED start flashing, the rotor stops, and the laser beam turns off.
7. To restore level, simply re-level the laser and check your initial
reference elevation.
5
Setting Up and Leveling the Laser
Determining the Height of Instrument (HI)
The height of instrument (HI) is the elevation of the laser’s beam. The
HI is determined by adding the grade-rod reading to a benchmark or
known elevation.
1. Set up and level the laser.
2. Attach the detector to a grade
rod and turn on the detector.
3. Place the grade rod on a
benchmark (BM) or other known
elevation.
4. Slide the detector up or down
the grade rod until the LCD shows
an on-grade reading.
5. Add the grade-rod reading to
the benchmark to determine the height of instrument.
Example:
Benchmark elevation = 100.23 ft
(30.55 m)
On-grade rod reading = + 4.34 ft
(1.32 m)
Height of instrument = 104.57 ft
(31.87 m)
6. Use this HI as a reference for all other elevations.