Kapro Prolaser Bambino GREEN User manual

Prolaser®Bambino GREEN
Model No. 842G
User Manual
2AA
15m/50' INCLUDED

2
Thank you for purchasing Kapro’s 842G Prolaser®
Bambino 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 842G Prolaser® Bambino GREEN is a laser level with
one green diode. The laser is innovatively designed for a
very broad range of professional and DIY jobs, including:
• Aligning tiles, marble, cabinets, borders, moldings and
trimmings
• Marking lay out for doors, windows, rails, stairs, fences
gates, decks and pergolas installation.
• All types of DIY jobs, including hanging shelves,
hanging hooks, pictures, curtains and more
2AA
15m/50' INCLUDED
NOTE
Keep this user manual for future reference.

3
CONTENTS
• Features 4
• Safety instructions 5-6
• Battery installation & Safety 7-8
• Overview 9
• Operating instructions 10-11
• Maintenance 12
• Field calibration test 13-18
• Specifications 19
• Warranty 20-21

4
FEATURES
• This laser tool automatically determines the horizontal
and vertical plans.
• The laser projects intersected horizontal and vertical
lines.
• Max. indoor working range - 15 m (50’).
• Self-levels in automatic mode when the laser is
positioned within its self-leveling range.
• Visual warning (blinking) when the laser is out of
leveling range falls.
• Manual mode allows angular layout/marking.
• Locking mechanism to protect the pendulum during
transportation.
• 1/4" tripod adaptor.
• Compact size - ts in your toolbox.
NOTE
This device contains precision components
that are sensitive to external shock, impact
or drop that may compromise its functionality
–handle with care to maintain its accuracy.

5
SAFETY INSTRUCTIONS
WARNING
This product is emitting radiation that is 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, as this will
increase the level of eye injury.
WARNING: This product contains lead in solder 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.

6
• 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 45°C
(14°F / 113°F)
• Do not operate the laser in explosive atmospheres such as
ammable liquids, gases or dust. 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 may occur.

7
• 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 45°C
(14°F / 113°F)
• Do not operate the laser in explosive atmospheres such as
ammable liquids, gases or dust. 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.
1. Push the latch and open the battery cover.
2.Insert 2 new AA batteries of the same brand according to
the polarity diagram on the inside of the battery compartment.
3. Close the battery cover.
BATTERY INSTALLATION & SAFETY
NOTE
If the pendulum lock mechanism is not
engaged before transportation, internal
mechanical damage may occur.
NOTE
If the laser level will not be used for a long
period of time, remove the batteries from
the battery compartment. This will battery
leakage and corrosion damage.

8
WARNING: Batteries can deteriorate, leak or explode, and
can cause injury or re.
1. Do not shorten the battery terminals.
2. Do not charge Alkaline batteries.
3. Do not mix old and new batteries.
4. Do not through batteries into household waste.
5. Do not dispose of the batteries in re.
6. Defective or dead batteries must be disposed of according
to local regulations.
7. Keep the batteries out of reach from children.

9
OVERVIEW
1. On/Off Locking Switch
2. Laser output window
3. Manual Mode button
4. Operation LED indicator
5. Battery cover
6. ¼” Tripod mount

10
OPERATING INSTRUCTIONS
Working in Automatic Mode (self-leveling):
In automatic mode the laser level will level itself in the
range of ±3° and will project crossed horizontal and
vertical laser beams.
1. Remove the laser from the pouch and place it on a
solid, at, vibration free surface or on a tripod
2. Push the locking switch #1 to the position.
The laser level will generate the crossed horizontal
and vertical lines and the green LED will light up.
3. If the initial slope of the laser is beyond ±3° the laser
lines will ash. In this case reposition the laser on a
more leveled surface.
4. Before moving the laser level switch the locking switch
#1 back to the position, this will lock the
pendulum and protect your laser.

11
OPERATING INSTRUCTIONS
Working in Manual Mode:
In manual mode the self-leveling mechanism of the 842G
is disabled (button #1 is in OFF position) and the laser lines
can be set at any slope required.
1. To activate the Manual mode, long press the #3 button.
The laser will project blinking cross lines and the red
LED will light up.
2. Tilt the laser to the desired slope.
3. To turn the manual mode off, press the Manual mode
button again.
4. While in Manual mode turning the locking switch #1
from to position will turn off the Manual mode.
The automatic self – leveling will be activated if the
laser level is within the self – leveling range.

12
MAINTENANCE
• To maintain the accuracy of your project, check
the accuracy of your laser level according to the eld
calibration tests procedures.
• Change the batteries 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 level is dust and dirt resistant to a
certain degree, do not store in dusty places as 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 damages.
• Remove the batteries if the laser level is unused for for
an extended period, to prevent corrosion damage.

13
MAINTENANCE
This laser level left the factory fully calibrated. Kapro
recommends checking the accuracy of the laser periodically,
or if the unit falls or is mishandled.
To do so, rst check the height accuracy of the horizontal
line, then check the leveling accuracy of the horizontal line,
and nally check the leveling accuracy of the vertical line.
Checking the Height Accuracy of the Horizontal Line.
(Up and down deviation)
1) Set up the laser on a tripod or on a at surface between
two walls Aand B, approximately 5 meters apart.
2) Position the laser level approximately 0.5 meter from wall A
3) Unlock the pendulum and press the button to project the
horizontal and the vertical cross lines towards wall A.
4) Mark the center of the cross lines as a1 on the wall.
(see gure 1)
FIELD CALIBRATION TEST
BA
a1
0.5 m
x
Figure # 1
approximately 5 m

14
5) Turn the laser 180° towards wall B, and mark the center
of the cross lines as b1 on the wall (see gure 2).
6) Move the laser level towards wall Band position it
approximately 0.5 meters from wall B.
7) On wall Bmark the center of the cross lines as b2
(see gure 3).
BA
a1
b2
x
b1
x
x
0.5 m
BA
a1
b1
x
x
180°
Figure # 2
Figure # 3

15
8) Turn the laser 180° towards wall A, and mark the center
of the cross lines as a2 on the wall (see gure 4).
9) Measure the distances:
Δa= |a2-a1|
Δb= |b1-b2|
10) The difference | Δa – Δb| should be no more than
4 mm, otherwise send the laser level to a qualied
technician for repair.
Checking the Level Accuracy of the Horizontal Line.
(Side to side inclination)
1) Set up the laser on a tripod or on a at surface at a
distance of approximately 1.5 meters from a 5 meter long wall.
2) Unlock the pendulum and press the button to project the
horizontal and the vertical cross lines towards the wall.
BA
a1
b1
x
b2
x
x
a2
x
180°
Figure # 4

16
3) Mark point a1 on the wall, in the middle of the
horizontal line at the left edge of the horizontal line
(see gure 5).
4) Turn the laser level counterclockwise until the right
edge of the horizontal line reaches near a1, mark a
point a2 on the wall, in the middle of the horizontal line
(see gure 6).
1.5 m
a1
x
x a1
x a2
Figure # 5
approximately 5 m
Figure # 6

17
5) The distance between a1 and a2, should be no more
than 2 mm otherwise send the laser level to a qualied
technician for repair.
Checking the Accuracy of the Vertical line.
1) Hang an approximately 4 meter 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 gure 7).
3) Set up the laser on a tripod or on a at surface in front
of the wall, at a distance of approximately 2 meters.
4) Unlock the pendulum and press the button to project the
vertical line toward the plumb line.
5) Turn the laser so that the vertical line will merge with the
plumb line below the hanging point.
a1 x
Figure # 7
approximately 4 m

18
6) Mark point a2 on the wall, in the middle of the vertical
line at the same height as a1. (see gure 8).
7) The distance between a1 and a2, should be no more
than 2mm, otherwise send the laser level to a
qualied technician for repair.
2 m
a1
a2
x
x
x
Figure # 8

19
Laser beams
output pattern
Vertical and horizontal cross lines
Laser range Indoor - 15m (50ft)
Accuracy ±0.4mm/m (±0.0004in/in)
Fan angle 100° ±5°
Self-leveling range ±3°
Laser line width 2.5 mm±0.5mm/5m
(0.13” ±0.02” at 20’ )
Wavelength 520 ±10nm - Laser Class II
Power supply 2 AA batteries (included)
Battery life 12 hours of continuous operation
Operating temp. -10° C + 45° C (14°F +113°F)
Storage temp. -20° C +60° C ( -4°F +140°F)
Water & dust proof IP54
Dimensions 7.6cm x 6.5cm x5cm
(3” x 2.6” x 2” )
Weight including
batteries
180gr±10gr
(0.4 lbs±0.35 oz)
SPECIFICATIONS

20
WARRANTY
This product is covered by a two year limited warranty
against defects in materials and workmanship. The
warranty does not cover products that are used
improperly, altered, or repaired without Kapro's approval,
nor a process of recalibration if needed.
REPAIR AND CALIBRATION PROCEDURE
1. If your product requires repair or calibration, please
return it to the point of sale, alongside your proof of
purchase.
2. After a return authorization procedure is initiated, the
laser level will be sent to an authorized repair lab.
3. Once completed, the product will be returned to a
point of sale of your choice for collection.
COSTS AND WARRANTY
• Products under warranty will be shipped and repaired
free of charge.
• In case of products that are not under warranty, you
will be notied by the dealer of the estimated cost for
the repair, before the beginning of the process.
The serial number sticker is positioned inside the battery
compartment.