4.
Set the Variable Rotation Mode to the desired rotation speed of the laser head. Ideal speed
for use with laser detector is 600 RPM. (LM800GR: the rotation speed is fixed at 600 RPM)
5.
Take elevation readings using the plane of laser light as a reference (Fig. 3). Follow the
Detector Operation Procedures in this manual.
Ceiling Grid Applications
1.
Attach the laser to the optional wallmount bracket. Be sure the control buttons are facing
outward. Tightening the locking screw will secure the instrument to the bracket.
2.
After installing the first piece of ceiling trim, attach the wallmount to it. Be sure the
wallmount is secure to the trim.
3.
Press the "A" button. Allow the instrument to self-level.
4.
Adjust the distance of the instrument from the grid, typically 1.5-inch (38mm) below the grid.
Loosen the adjustment screw and slide the instrument up/down on the wall mount. When
the desired height has been reached, tighten the adjustment screw to secure the instrument.
5.
Setup a "Benchmark".
6.
Install the ceiling grid. Attach the magnetic laser target to the ceiling trim being installed.
Adjust the height of the trim until the laser beam strikes the target (Fig. 4).
Laydown Applications
(LM800 Only) - (Fig. 5)
1.
Place the instrument in the laydown position on a flat, level surface.
2.
Press the "A" button. Allow the
instrument to self-level.
3.
Setup a "Benchmark"
OPERATIONS
Remove the laser from its carrying case.
Note: Instruments are shipped with ADS on as the default setting. This setting can be changed by
the user (see Anti-Drift System - ADS )
Leveling
1.
The instrument can stand alone on a level, sturdy surface or preferably secured to a 5⁄8" -11
surveyor's tripod.
2.
Press the "A" button once, and allow time (up to 60 seconds) for the instrument to self-level.
Note: The laser head may begin to rotate before leveling is complete. The self-leveling
speed is approximately 1° per 4 seconds.
3.
After self-leveling, the instrument will begin operating in Rotation Mode for LM800-GR, last
select mode of operation (i.e. Sweep, Spot, Rotation Mode) for LM800.
8 • LM800 - LM800GR
Plumbing / Lay-Down
(LM800 Only)
1.
On a flat surface, place the instrument on its back using the built-in trivet (control
panel facing upward).
2.
Press the "A" button once, and allow time for the instrument to self-level.
Variable Rotation Mode
(LM800 Only)
The rotation mode will give you the option of increasing or decreasing the speed of
the rotating laser. This feature can be used to create a room-wide, 360° height
reference or vertical plumb line for general alignment, drop ceiling installation, and
more. Pressing the "D" button, will adjust the speed from 600, 300, 150, and 0 RPM.
Sweep or Scanning Mode
(LM800 Only)
Instead of creating a room-wide reference line, the Sweep (Scanning) Mode
creates a shorter, brighter laser "chalk line" that can be used for leveling or
plumbing doors, windows, fixtures, and more. You may also use this feature to keep the instrument
from interfering with other lasers and detectors on site. Pressing the "E" button, will lengthen or
shorten the sweep of the laser beam. Preset angles of 0º, 10º, 45º, 90º, and 180º can be set.
Position the sweep area by using the "F" and "G" buttons.
Re-Leveling
If bumped or moved, the instrument will automatically attempt to re-level itself. On a job site, it
may be necessary to prevent re-leveling in order to prevent inaccurate measurements by the
operator. The Anti-Drift System (ADS) is used for this purpose (see Anti-Drift System - ADS). The
instrument can also be placed in Manual Mode to allow the instrument to continue operating when
out of level ( see Manual Mode ).
Axis Drive Error
If the laser is set up or tipped beyond its self-leveling range of ±5°, the laser head will initially
attempt to level; however, when the self-leveling limit is reached, an error will indicate an axis
error (Fig. 6). Turn the instrument OFF, move the instrument to a more level position, then turn the
instrument on again.
Spindle Motor Error
If the laser spindle motor fails to rotate or rotates outside of the
set speed, an error indicator will indicate a spindle motor error (Fig. 6). If this occurs, see
Troubleshooting.
LM800 - LM800GR • 9