Kapro Prolaser 3D All-Lines User manual

Prolaser®3D All Lines Green
Model No. 8831G
Li-ion
165'/50m RECHARGEABLE
Up to 60 m/200'
User Manual
Manual del usuario
Manuel d'utilisation
Руководство по эксплуатации

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Thank you for purchasing Kapro’s 8831G Prolaser 3D All Lines
Green. You now own one of the most advanced laser tools
available. This manual will show you how to get the most out
of your laser tool.
APPLICATIONS
The 8831G Prolaser 3D All Lines Green is a laser level with
3 green diodes, that emits 3 circular beams. The laser is
innovatively designed for a very broad range of professional
and DIY jobs, including:
• Hanging cabinets and shelves.
• Setting floor and wall tiles.
• Drywall installation and hanging acoustic ceilings.
• Framing and aligning windows and doors.
• Leveling electrical outlets, plumbing and studs.
• Accurately laying out right angles for ooring, fences, gates,
decks, pergolas and gazebos.
• Leveling slopes for stairs, rails, roofs and more (manual mode).
NOTE
Keep this user manual for future reference.
EN
Li-ion
165'/50m RECHARGEABLE
Up to 60 m/200'

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CONTENTS
• Features 4
• Safety instructions 5-6
• Battery installation & safety 7-8
• Overview 9
• Operating instructions 10-12
• Maintenance 13
• Field calibration test 14-23
• Specifications 24
• Warranty 25

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FEATURES
• This laser tool automatically determines the horizontal
and vertical planes.
• This laser emits 1 horizontal 360° and 2 orthogonal 360°
vertical green beams, that intersect on 4 walls, floor and
ceiling.
• ±3° self-leveling range in automatic mode.
• Visual and auditory warning when the laser level is out of
leveling range.
• Pulse mode for working with a detector.
• Max. indoor working range - 30 m (100’) with goggles.
• Max. detectable range of the laser in pulse mode is
60 m (200’).
• Manual mode allows angular layout/marking.
• IP65 rating for water and dust protection.
• 1/4" tripod thread.
• Shock resistant rubber over molded casing.
• Multi-purpose magnetic mount.
• Rechargeable Li-Ion battery and type-C USB charger.
NOTE
This device contains precision components
sensitive to external shock, impact or falls
that may compromise its functionality. Handle
with care to maintain its accuracy.

5
SAFETY INSTRUCTIONS
WARNING
This product emits radiation classified as Class II
according to EN 60825 -1
The laser radiation can cause serious eye injury
• Do not stare into the laser beam
• Do not position the laser beam so that it unintentionally
blinds you or others.
• Do not operate the laser level near children or let children
operate the laser level.
• Do not look into a laser beam using magnifying optical
devices such as binoculars or a telescope, since it will
increase the level of eye injury.
WARNING: This product contains lead in soldered joints
and certain Electrical parts contain chemicals which are
known to the State of California to cause cancer, birth
defects or other reproductive harm.
(California Health & Safety Code Section 25249.6- Proposition 65)
NOTE
The green goggles are intended to enhance
the visibility of the laser beam. They will not
protect your eyes against laser radiation.

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• Do not remove or deface warning labels on the laser level.
• Do not disassemble the laser level. Laser radiation can
cause serious eye injury.
• Do not drop the laser.
• Do not use solvents to clean the laser.
• Do not use in temperatures below -10°C or above 40°C
(14°F / 104°F)
• Do not operate the laser in the presence of flammable
liquids or gases. Sparks from the tool can cause ignition.
• When not in use, turn off the power, engage the pendulum
lock and place the laser in the carrying pouch.
• Make sure the pendulum lock mechanism is engaged
before transporting the laser.
NOTE
If the pendulum lock mechanism is not
engaged before transportation, internal
mechanical damage can occur.

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The 8831G Prolaser 3D All Lines Green is powered by a
rechargeable Li-Ion battery. 2 batteries packs are included in
the set. The laser can be powered by using only the included
charger.
Installation
1. Press down the latch of the battery cover.
2. Insert the Li-Ion battery pack.
3. Close the battery cover.
BATTERY INSTALLATION & SAFETY

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The LED indicator (c) on the laser will flash when the battery is
low. In this case, use the included charger to charge the battery
or replace it with a new one. The battery can be charged while
inside the laser.
1. Rechargeable Li-Ion battery
2. Charger unit
3. Type-C USB charging cable
4. Battery LED indicator
• Red – charging
• Blue – fully charged
WARNING: Battery can deteriorate, leak or explode and
can cause injury or fire.
1. Do not shorten the battery terminals.
2. Do not dispose of battery into household waste.
3. Do not dispose of battery in re.
4. Defective or dead batteries must be disposed of according
to local regulations.
5. Keep the batteries out of children's reach.
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2

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65
OVERVIEW
8
c
1. Power switch
2. Top horizontal beam
3. Side vertical beam
4. Front vertical beam
5. 1/4" tripod mount
6. Battery cover
7. Type-C USB charging port
8. Keypad
a. Horizontal beam selector & indicator
b. Vertical beam selector & indicator
c. Pulse Mode button\Low battery indicator
d. Manual Mode button & indicator
4
2
3
b8a
d
1
7

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OPERATING INSTRUCTIONS
Working in Automatic mode (self-leveling):
In Automatic mode the laser level will level itself within a ±3° range.
1. Remove the laser level from the case and place it on a solid,
flat, vibration free surface or on a tripod.
2. Push the POWER switch to ON mode. The bottom horizontal
beam and its LED indicator will turn on.
3. Choose the required beams by using the selector buttons:
a. Horizontal beam selector (a) operates in the following cycle:
Top beam (default) → No beams.
b. Vertical beam selector (b) operates in the following cycle:
Side beam (default) → Front beam → Both beams → No
beams.
4. If the initial inclination of the laser level is beyond ±3°, the laser
will alert by flashing and beeping. In this case reposition the
laser level on a more suitable surface.

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Working in Manual mode:
In manual mode the 8831G self-leveling mechanism is disabled
and the laser can be set at any required slope.
The laser beams will flash every 2 seconds to indicate that the
laser is in Manual mode.
1. In OFF mode, press the Manual mode button (d) for 2 seconds.
The Manual mode red LED indicator (d) will turn on.
The bottom horizontal beam and its LED indicator will turn on.
2. Select the required laser beams.
3. To mark a slope, tilt the laser to the desired angle.
4. To return to self-leveling mode, push the POWER switch to ON.
The laser will return to Automatic mode and the Manual mode
LED indicator will turn off.
Make sure you are within the self-leveling range before activating
the automatic mode.

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Working in Pulse mode with a detector:
For outdoor work under direct sunlight or bright conditions,
and for extended indoor ranges of up to 60 meters (200 ft.),
use the pulse mode with a detector.
1. Push the POWER switch to ON mode.
2. Press the Pulse mode button (d) to activate it. The Pulse
mode indicator (d) will turn on.
3. Turn on the detector and search for the laser beam.
4. While in Pulse mode, you can select different beams by
pressing the appropriate beam selector buttons.
5. To switch off the Pulse mode, press the Pulse mode
button (d) again. The Pulse mode indicator (d) will turn off.

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MAINTENANCE
This laser level left the factory fully calibrated. To keep
your laser level accurate, check the accuracy of the device
according to the field calibration tests procedures (p. 14).
• Change the battery when the laser beams begin to dim.
• Wipe the aperture lens and the body of the laser level with a
clean soft cloth. Do not use solvents.
• Although the laser is dust and dirt resistant to a certain
degree, don't store in dusty places, since long term exposure
may damage internal moving parts.
• If the laser level is exposed to water, dry the laser level
before returning it to the carrying case to prevent corrosion
damage.
• Remove the battery if the laser level is unused for a long
period of time to prevent corrosion damage.

14
FIELD CALIBRATION TEST
This laser level left the factory fully calibrated.
Kapro recommends that the user will check the accuracy of the
laser periodically, or if the unit falls or is mishandled.
1. Check the height accuracy of the cross created by the side
vertical and the horizontal beams.
2. Check the height accuracy of the cross created by the
front vertical and the horizontal beams.
3. Check the accuracy of the front vertical beam.
4. Check the accuracy of the side vertical beam.
5. Check the perpendicularity between the 2 vertical beams.
NOTE: All the calibration tests must be done in Automatic mode.
1. Checking the height accuracy of the cross created by
the side vertical and horizontal beams.
(Up and down deviation)
1) Place the laser on a table or on the floor between 3 walls
A, B and C. The distance between A and Bshould be
approximately 5 meters.
2) Place the laser approximately 0.5 meters from wall A
and 2 meters from wall C.
3) Turn the device ON and activate the horizontal and
the 2 vertical beams.
4) Place the intersection point of the horizontal and the
side vertical beam on wall A. Place the intersection point of
the horizontal and the front vertical beams on wall C.

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5) Mark on wall Athe intersection point as a1, and on wall C
mark the intersection point as c1 (see figure 1).
6) Turn the laser 180° and reposition it. Verify that the 2 vertical
beams pass through a1 and c1 points.
7) Mark on wall Bthe intersection point as b1(see figure 2).
BA
C
a1
c1
x
x
0.5 m
2 m
BA
C
a1 b1
c1
x
xx
0.5 m
2 m
180°
Figure 1
Figure 2

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8) Without turning the laser, move the laser towards
wall Band place it approximately 0.5 meter from wall B.
9) Verify that the vertical beam passes through a1 and b1.
10) On wall B, mark the intersection point as b2 (see figure 3).
11) Turn the laser 180° and reposition it. Verify that the
2 vertical beams pass through b2 and a1 points.
12) On wall A, mark the intersection point as a2 (see figure 4).
BA
C
a1 b2
b1
x
x
x
0.5 m
2 m
Figure 3

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13) Measure the distances:
Δa= |a2-a1|
Δb= |b1-b2|
14) The difference |Δa – Δb| should be no more than 3 mm,
otherwise send the laser to a qualified technician for repair.
BA
C
a2
a1
b2
b1
x
x
x
x
0.5 m
2 m
180°
Figure 4

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2. Checking the height accuracy of the cross created by
the front vertical and horizontal beams.
(Up and down deviation)
1) Place the laser on a table or on the floor between 3 walls
A, B and C. The distance between Aand Bshould be
approximately 5 meters.
2) Place the laser level approximately 0.5 meters from wall A
and 2 meters from wall C.
3) Turn the device ON and activate the horizontal and the 2
vertical beams.
4) Place the intersection point of the horizontal and the front
vertical beams towards wall A.
5) Repeat stage 1. procedure from steps 5 – 14.
3. Checking the Accuracy of the front vertical beam.
1) Hang an approximately 3 meter long plumb line on a wall.
2) After the plumb line has settled, mark point a1 on the wall
behind the plumb line, near the plumb cone. (see figure 5).

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3) Place the laser on a tripod or on a solid surface in front of the
wall, at a distance of approximately 2 meters.
4) Turn the device ON and activate the front vertical beam towards
the plumb line.
5) Turn the laser, so the vertical beam will merge with the
plumb line below the hanging point.
a1 x
Figure 5
approximately 3 m

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6) Mark point a2 on the wall, in the middle of the vertical beam
at the same height as a1. (see figure 6).
7) The distance between a1 and a2, should be no more than
1 mm, otherwise send the laser level to a qualified technician
for repair.
2 m
a1
a2
x
x
x
Figure 6