Bump Alarm
Due to the laser's high leveling accuracy, the laser is
very sensitive to knocks, vibrations, and changes in
position. The Bump Alarm will be triggered if the laser
is moved from its initial location. Once auto-leveling
is finished and the Leveling Mode Indicator LED be-
comes solid green, the Bump Alarm Indicator LEDs
will begin to flash white indicating the Bump Alarm
is initializing. During this time, disturbances will not
trigger an alarm but will restart the initialization timer.
If the laser has not moved for 30 seconds, the Bump
Alarm Indicator LEDs will become solid white. This
indicates that the Bump Alarm is active. Any bumps
above the sensitivity limits will trigger the alarm. The
laser diode will turn off, the head will stop rotating,
the Bump Alarm Indicator LEDs will alternate flashing
white, the Leveling Mode Indicator LED will flash red,
and an audible tone will sound.
Clearing the Bump Alarm:
• In the event of a Bump Alarm, press either the Level-
ing button or the Bump Alarm button. The alarm will
clear, and the laser will begin leveling sequence and
re-initiate the Bump Alarm. The laser can be power
cycled to clear the Bump Alarm if needed.
NOTE: Check the position of the laser plane to
determine if it has moved. Additional setup may be
needed to re-align the laser with previous bench-
marks.
Changing the Bump Alarm Sensitivity:
The Bump Alarm sensitivity default is set to high
from the factory, both Bump Alarm Indicator LEDs
will be illuminated. Set up the laser on a flat and
stable surface to avoid interruptions in operation.
If the Bump Alarm becomes overly sensitive to the
environmental conditions, the setting can be changed
by pressing the Bump Alarm button. Only the left
Bump Alarm Indicator LED will illuminate, indicating
the lower sensitivity selected. The Bump Alarm will
re-initiate when the sensitivity is changed. Once
complete, the LED will turn solid white to show that
the Bump Alarm is armed. To switch back, press the
Bump Alarm button again.
Complete Manual Mode
Ensure the laser completes self-leveling successfully
before entering this mode. Complete Manual Mode
is only available to engage when the laser is level,
and the leveling LED is solid green.
1. To turn ON Complete Manual Mode, press the
Leveling button.
2. The Leveling Mode Indicator LED will turn solid
red, and the laser will no longer attempt to self
level.
NOTE: The Bump Alarm Indicator LEDs will turn
off. The Bump Alarm is not available in Complete
Manual Mode.
3. To turn OFF Complete Manual Mode, press the
Leveling button again, and the laser will begin self-
leveling sequence and the Levling Mode Indicator
LED will go back to solid green if leveled properly.
Manual Masking
To avoid interference with other users on the jobsite,
manual masking flaps can be used to block 4 indi-
vidual quadrants of the rotating laser plane.
• To MASK, use finger to flip up the mask in the de-
sired quadrant to block the laser beam exiting the
window.
• To UNMASK, simply use finger to flip the mask back
down.
Troubleshooting
• Ensure the battery is installed correctly. The fuel
gauge should indicate the remaining charge when
correctly installed.
• Ensure the battery is charged.
• Leveling Error - The Leveling Mode Indicator LED
will flash red, and the alarm will sound. Ensure that
the laser is on a level surface and that the tool is in
the proper Horizontal orientation. Try pressing the
Leveling button to initiate auto-leveling. Try power
cycling the tool to clear the setting. If this fails, return
the laser to an authorized MILWAUKEE service
center.
• Bump Alarm too Sensitive - Ensure the laser is on
a level and stable surface. Try changing to a less
sensitive setting using the Bump Alarm button on the
laser keypad. Clear the Bump Alarm by using one
of the options from the "Clearing the Bump Alarm"
section. If this fails, return the laser to an authorized
MILWAUKEE service center.
• ONE-KEY™ Lock Out - The laser will turn on briefly
but shut down after ~15 seconds. The ONE-KEY™
Indicator LED will be flashing red. This is an indica-
tor that the laser is locked out. Use the ONE-KEY™
app to connect and unlock the tool.
NOTE: If all the recommended troubleshooting fails,
power cycle the laser with the Power button. Try
removing/re-inserting the battery to restart the tool. If
the problem persists, return the laser to an authorized
MILWAUKEE service center.
ACCURACY FIELD CHECK
Perform the Accuracy Field Check
NOTICE
procedure immediately upon unboxing
of each new laser and before exposure to jobsite
conditions. See "Accuracy Field Check" for in-
formation. Should any deviation from listed product
accuracy be found, please contact an authorized
MILWAUKEE service center. Failure to do so could
result in rejection of warranty claim.
Influences on Accuracy
Ambient temperature can impact laser accuracies.
For accurate and repeatable results, the following
procedure should be conducted with the laser el-
evated off the ground and placed in the center of the
working area. Abusive treatment of the laser, such
as excessive impacts from drops, can also lead to
deviations in product accuracy. Therefore, it's recom-
mended to conduct the field check procedure after
any impacts or before completing any critical jobs.
NOTE: Accuracies and leveling times are measured
at ambient temperatures (68°F). Use of the tool at
extreme temperatures (even within the operating
temperature range) may negatively impact these
specifications.
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