Bear POLAR User manual

™
INSTRUCTION MANUAL
VISIBLE BEAM ROTARY
LASER LEVEL
AUTOMATIC HORIZONTAL & VERTICAL

For trouble-free use of this scientic instrument, please
read this instruction manual carefully and keep it for
future reference.
Place of Purchase : .......................................
Date of Purchase : ............./............/............
www.bearscienticproducts.com
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Thank you for purchasing the model POLAR LASER

Contents
Instrument accessories.................................................. Page 3
Chapter 1. Cautions ....................................................................... Page 4
Chapter 2. Introduction ................................................................... Page 5
Chapter 3. Instrument operation ..................................................... Page 8
Chapter 4. Battery .......................................................................... Page 12
Chapter 5. Remote control.............................................................. Page 14
Chapter 6. Accuracy checking & adjustment.................................... Page 15
Chapter 7. Outdoor receiver ........................................................... Page 24
Chapter 8. Care & maintenance ...................................................... Page 25
Chapter 9. Specifications................................................................ Page 26
Chapter 10. Optional accessories ..................................................... Page 27
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Instrument accessories
Standard Accessories:
1. Instrument
2. Carry Case
3. Instruction Manual
4. Red Laser Target
5. Remote Control
6. Internal Ni-MH Battery Pack
7. Battery Charger
Optional Accessories: (see page 27)
1. Genno Rod B-Genno
2. Wallmount B-WM
3. Outdoor Receiver & Clamp
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1. Cautions
1. The Polar is clasified as a Class 2M/2a laser product according
to United States Government Code of Federal Regulations CFR21.
2. Avoid direct eye exposure to the laser beam.
3. When moving the instrument please turn off the power.
4. Push the buttons on the front of the Polar or the remote control with the base
of your nger not sharp ngernails.
5. When the Laser is not being used for periods greater than 2 months please
remove the batteries from the unit to avoid possible corrosion.

2. Introduction
2.1. Housing Nomenclature
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Laser head
Control panel
Charging port
Laser window
Rubberized
Handle

2.2. Control Panel Nomenclature
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Laser head position
anti-clockwise
Laser head position
clockwise
Auto/manual
Power (ON/OFF)
Manual grades X & Y
Scanning mode
Rotation speed
Anti-drift mode

2.3 Control Panel Operation
1. Beam Position: Rotates the beam clockwise or anti-clockwise when
the laser head is set to a stationary dot or is in scan mode.
2. Auto/Manual: Toggles the laser between auto leveling mode and
manual mode (for set-up of manual slopes).
3. Power (ON/OFF): Switches the unit on or off.
4. Manual Grade: Drives a manual grade into the laser head when the
unit is in manual mode. (see 3.7)
5. Beam Scan: Puts the beam into scan mode and is used to cycle
through the preset scan angles (0°, 10°, 45°, 90°, 180°, 0°).
6. Rotation Speed: Puts the beam into rotation mode and is used to
cycle through the preset rotation speeds (0, 60, 120, 300, 600, 0 rpm).
(Note: When using a receiver use 600rpm)
7. Anti-Drift: Activates the anti-drift system (see 3.6).
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3. Instrument Operation
3.1 Horizontal Leveling:
• Place the Polar on the floor, countertop or mount it to a tripod or wallmount
- suggest a flat head tripod is used.
• Press the power button and allow up to 60 seconds for the unit to level.
While leveling, the laser beam will flash. Once it has finished leveling it will
stop flashing and the beam will begin to rotate.
• The laser beam and auto/manual LED will flash if the instrument is set up
outside its self-leveling range of ±5°.
3.2 Vertical Leveling:
• Place the Polar on the floor or countertop using the built in trivet points or
alternatively mount to a vertical mount (B-WM) and attach to a tripod.
• Press the power button and allow up to 60 seconds for the unit to level.
While leveling, the laser beam will flash. Once it has finished leveling it will
stop flashing and the beam will begin to rotate.
• The laser beam and auto/manual LED will flash if the instrument is set up
outside its self-leveling range of ±5°.
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3.3 Rotation Speed Adjustment:
Once the laser is set-up in either horizontal or vertical leveling mode,
pressing the rotation speed button will cycle through the preset rotation
speeds (0, 60, 120, 300, 600, 0 rpm). Slowing the rotation speed increas-
es the visibility of the beam for interior applications.
Note: for greatest accuracy when using a receiver, always use the laser
in the fastest rotation speed available.
3.4 Scan Mode:
Once the laser is set-up in either horizontal or vertical leveling mode,
pressing the beam scan button will put the beam into scan mode and
cycle through the preset scan angles (0°, 10°, 45°, 90°, 180°, 0°). Using
a lower speed beam in scan mode increases the visibility of the beam for
interior applications and also keeps your beam from interfering with other
workers on-site when you do not require a full 360° rotating beam
Note: in scan mode the beam will not be picked up properly by a receiver.

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3.5 Beam Position:
Once the laser is set-up in either horizontal or vertical leveling mode, if
the rotation speed of the laser is slowed to 0 rpm or the laser is placed in
scan mode, the positioning of the beam can be adjusted clockwise or
anti-clockwise by using the relevant beam position buttons.
3.6 Anti-Drift System:
Once the laser is set-up in either horizontal or vertical leveling mode,
pressing the anti-drift button will activate anti-drift mode. The anti-drift
LED will flash slowly when the anti-drift system is turned on. If the unit is
bumped or moved out of level when anti-drift is engaged, the anti-drift
LED will flash quickly and the laser will stop rotating. To deactivate
anti-drift mode, press the anti-drift mode button again.
3.7 Manual Grade:
• Set up the laser in horizontal leveling mode as above.
• When self-leveling has completed, press the auto/manual button to
enter manual mode.
• Press and hold the ¡ button to drive the beam up to your desired grade
in the X1 direction.

• Press and hold the ¢ button to drive the beam down to your desired
grade in the X1 direction.
• Press and hold the button to drive the beam up to your desired
grade in the Y1 direction.
• Press and hold the £ button to drive the beam down to your desired
grade in the Y1 direction.
Notes:
• Press the auto/manual button again to
enter back into automatic leveling mode.
• Entered grades are not saved when the
unit is turned off. The laser will always
automatically self-level when
turned on.
(See Annex A for manual
slope set-up procedure)
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X2 X1
Y1
Y2

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4. Battery
The Bear Polar comes equipped with a charger and inbuilt rechargeable
battery but should you ever need to remove the battery pack for any reason
(ie. if the unit is not going to be in use for more than two months) please use
the following procedure:
• Unscrew the four retaining screws in the battery pack in the bottom of the
instrument with a phillips head screw driver.
• Turn the unit upright while holding your hand under the base of the laser.
The battery pack should drop out into your hand.
To reinstall the battery pack:
• Place the battery pack inside the base of the unit ensuring that the
orientation of the pack is such that the contacts inside the laser’s base
align with the contacts on the battery pack.
• Install the four retaining screws in the battery pack and tighten them down.

When battery power is low, the power LED will flash indicating that the
batteries must be charged.
To charge the batteries:
• Plug the mains plug of the charger into a 100-240VAC (50/60Hz) power
supply.
• The red LED on the charger will flash.
• Plug the charge plug into the charge port on the laser.
• The red LED will light solidly while the battery is charging.
• When charging is complete, the red LED on the charger will flash again.
• On average, a full charge will take approximately 7 hours.
Note:
• The instrument can still be used
while it is charging.
• Brand new rechargeable batteries or
those that have not been used for a long
time may need to be charged and
discharged several times before they
attain maximum capacity.
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Charging Port
Charger

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5. Remote Control
The Bear Polar comes standard with an infrared
remote control.
The remote can control all functions of the laser
except power on/off and anti-drift mode on/off.
The buttons on the remote control coincide exactly
with the buttons on the control panel of the laser
(refer to 2.3) and all functions are operated in
the same manner.
Operating distance of the remote control is
up to 20m.
The red LED on the remote control will flash to
show that the operating signal has been sent to
the laser when a key is pressed.
Remote

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6. Accuracy Checking & Adjustment:
The Bear model Polar is a sealed unit and is calibrated to precise accura-
cies at the factory. However, it is recommended that you perform a calibration
check before the initial use of the laser and then from time to time to ensure
that you are doing the highest quality work possible. Always check calibration
if the laser has been handled roughly, dropped or loaned to your best mate.
7.1 Horizontal & Vertical Calibration Check:
If possible drop by your dealer for a CAL check - usually takes around 10 minutes.
(there may be a charge for this service).
OR
7.1.1 Y-axis:
1. Attach the laser to a stable at head tripod or stand at least 15m from a wall or
other stable vertical surface (the target). Use a carpenter’s level to ensure the
tripod head is level enough to allow the laser to be aimed in different directions
with minimal re-leveling. Turn the entire laser so that either direction of the Y-axis
is aimed at the target.
2. Turn the laser on in rotation mode, go to the target and nd the laser beam. Make
a mark at the center of the beam thickness. It is easiest to hold your pencil on the

sweeping beam line and move slightly up or down until you see that you are
centered on the beam, make your mark. If conditions make the beam difcult
to see, you can slow the rotation, scan the beam on the target surface or use a
receiver to nd the beam.
3. Turn the entire laser 180 degrees, ensuring that the height of the tripod does not
change as this will affect your results. The opposite Y-axis direction should now
be aimed at the target. Secure the laser, allow it to re-level and mark the laser
beam on the target.
4. The difference between the two marks (if any) is double the difference between
the laser’s calibration and true level for the Y-axis. Half way between these two
marks is true level. Make a long mark at true level. The calibration error of the
laser is the difference between either one of the original marks and true level.
(eg. If the difference between one mark and true level is 1mm and your laser is
30m from the target, then the calibration error of the laser is: 1mm @ 30m).
5. If the calibration error is within the stated specications of ±2.0mm @ 30m then
no calibration is required. If the calibration is outside of this specication do not
move the laser and proceed with the calibration procedure for the Y-axis outlined
in 7.2.1
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7.1.2 X-axis:
1. Follow steps 1 to 4 of procedure 7.1.1 above, substituting the X-axis for
the Y-axis.
2. If the calibration error is within the stated specifications of ±2.0mm @
30m then no calibration is required. If the calibration is outside of this
specification do not move the laser and proceed with the calibration
procedure for the X-axis outlined in 7.2.2
7.2 Horizontal Calibration Adjustment:
7.2.1 Y-axis:
1. Press and hold the ¡ and ¢ buttons on the laser control panel for about
3 seconds. The anti-drift LED will start flashing to indicate that the laser
is in Y-axis calibration mode.
2. Use the £ or buttons to adjust the height of the beam on the target
until it is at true level or within the calibration specifications of the laser.
3. Press and hold the ¡ and ¢ buttons on the laser control panel for about
3 seconds to save the calibration data and exit Y-axis calibration mode.
The laser will return to horizontal leveling mode and the anti-drift LED
will turn off.

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7.2.2 X-axis:
1. Press and hold the £ and buttons on the laser control panel for about
3 seconds. The auto/manual LED will start flashing to indicate that the
laser is in X-axis calibration mode.
2. Use the ¡ or ¢ buttons to adjust the height of the beam on the target
until it is at true level or within the calibration specifications of the laser.
3. Press and hold the £ and buttons on the laser control panel for about
3 seconds to save the calibration data and exit X-axis calibration mode.
The laser will return to horizontal leveling mode and the auto/manual
LED will turn off.
Note: If the laser is turned off without saving the calibration data, the
calibration of the laser will not change and you must begin the
entire calibration procedure again - NOT FUN.