Influences On Accuracy - Milwaukee 3521-20 Manual Del Operador

5. If the tool cannot achieve a level state (i.e., the
work surface is > 4 degrees off true level), the laser
points will flash rapidly (3 flashes per second).
Relocate or adjust the work surface.
Troubleshooting
If the tool does not turn on:
• Ensure battery is installed properly. Fuel gauge
should indicate remaining charge when correctly
installed.
• Ensure battery is charged.
• Ensure the tool's internal temperature is within
specified operating ranges. If stored in excessive
heat or cold, allow at least 2 hours to acclimate to
ambient temperature before turning on the tool.
If problem persists, please contact a MILWAUKEE
service facility for support.
ACCURACY FIELD
CHECK
Perform the Accuracy Field Check
NOTICE
procedure immediately upon unboxing
of each new Laser Level and before exposure to
jobsite conditions. See "Accuracy Field Check"
for information. Should any deviation from listed
p r o d u c t a c c u r a c y b e f o u n d , p l e a s e c o n -
tact a MILWAUKEE service facility. Failure to do so
could result in rejection of warranty claim.

Influences on Accuracy

Ambient temperature gradients can impact laser
accuracy. For accurate and repeatable results, the
following procedure should be conducted with the
laser elevated off the ground and placed in the center
of the working area.
Abusive treatment of the Laser Level, such as exces-
sive impacts from drop, can also lead to deviations
in product accuracy.
Therefore, it is recommended to conduct the Field
Check procedure after any impact or before complet-
ing any critical jobs.
Horizontal Height Accuracy
A free measuring distance of approximately 66' on a
firm surface between two walls or structures A and
B is required for this check.
It is also suggested to mount the Laser Level to a
commercially available Tripod for easy adjustment.
1. Securely mount the tool within 1' of wall A.
A
1'
66'
2. Turn the tool to
Level & Plumb Lines Mode.
3. Direct the front laser beam against the nearest
wall A and allow to self-level. Mark the center of
the laser cross on the wall (point I).
4. Rotate the tool 180° without changing the height,
allow it to self-level, and mark the center of the
laser cross on the opposite wall B (point II).
A
180
5. Move the tool within 1' of wall B. Allow the laser
to self level. Align the laser cross in the general
direction of point II on wall B.
A
6. Adjust the height of the tool (using the tripod or
by adding shims, if required) to align the laser
cross directly onto point II on wall B. Allow the
tool to self-level.
7. Rotate the tool 180° without changing the height,
allow it to self-level, and mark the center of the
laser cross on wall A (point III). Point III should
be aligned as vertically above or below point I on
wall A as possible.
A
B
d
8. The distance between points I and III on wall A is
the height deviation (d) of the tool. This distance
should not exceed 1/8" (max.) at 33' (1/2" at 132').
For the Measuring distance of 2 x 66' = 132', the
maximum allowable deviation (d) is: 132' x ±1/8"
÷ 33' = ±1/2".
6
ON and to Perpendicular
1'
180
B
B
B
B