Laser LAR-250 GB Operating instructions
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GB Operating instructions The STABILA LAR-250 rotation laser is an easy to operate rotation laser for horizontal and vertical levelling and plumb lines. The LAR-250 has a sealed casing (IP 65). It is self-levelling in a range of ± 5°. The laser beam can be received at distances of up to 175 m (570 ft) with the use of a receiver, even when it is no longer visible to the naked eye. We have endeavoured to explain the unit's handling and functioning in as clear and comprehensible manner as possible.
Remote control: Adjusting and aligning the laser beam (16) -> Selector switch: Rotation function Scan function 20 19 16 Rotation function: (19) -> Reduce rotation speed 17 18 (20) -> Increase rotation speed Rotation speed = 0 (17) -> The laser dot moves to the left (18) -> The laser dot moves to the right Scan function: (17) -> The scanning line moves to the left (18) -> The scanning line moves to the right Scan funktion: (20) -> The scanning line is longer (19) -> The scanning line is shorter When w
Main applications: Levelling Set the unit on a firm base or a tripod. Tip: It is useful to set up the rotation laser centrally to the subsequent measurement points. 3 D 19 20 16 17 Pressing the button (3), switches the rotation laser ON and it starts to level itself automatically. Once levelling is complete, the laser begins to rotate.
Height of tool alert function Minor tremors or vibrations are automatically compensated for only up to a set threshold. If these disruptive influences are greater than this, the height of tool alert function engages and rotation stops. The laser beam switches off and the Y LED flashes. You must switch the laser unit off using button (3) and then switch it on again. Disruptive influences that can lead to adjustment of the precise alignment and the laser beam's setting do not therefore go unnoticed.
3 4c After switching on (via button 3), press button (4c) until the Z LED lights. The unit is now in height of tool alert function mode. Buttons (17) and (18) on the remote control can now be used to incline this laser plane at right angles to the line from the targeting marks. The inclined plane is automatically levelled horizontally in this line's direction.
Vertical levelling Adjusting only in point mode (only using the Rotation and not the Scan function) (17) -> The laser plane moves to the left (18) -> The laser plane moves to the right 2 basic methods of vertical levelling Generating parallel planes: Swivelling until S1 = S2 Continuous beam Rotational beam Creating vertical reference areas, e.g. measuring dividing walls.
Checking the calibration The LAR-250 rotation laser has been designed for building site use and leaves our factory perfectly calibrated. As with any precision instrument, however, its calibration must be regularly checked. The unit should be checked before starting any new tasks, particularly when the unit has been exposed to strong vibrations. After an impact, the unit should be checked throughout its whole self-levelling range.
Adjustment - Horizontal If the readings are determined as being outside the tolerance limits during the horizontal check, the laser can be adjusted as follows. The decisive factor is the distance between the opposing measurement points, i.e. points 1 + 3 and 2 + 4. Points 1 and 3 on the unit's y-axis and points 2 and 4 on the unit's x-axis now correspond.For example, if the distance between points 2 + 4 is outside the tolerance limit of 0.
Vertical checking (The unit is tilted 90° to the side foot). Two parallel wall surfaces at least 10m ( or 50 ft) apart are required for the vertical check. 1. For vertical levelling, the rotation laser is set directly in front of wall A either on its side feet or mounted on a tripod. I 2. Switch the unit on and let it level automatically - Button (3) 3 3. Align the laser beam against wall A. I 4. Mark the position of the visible laser dot on wall A (Point 1). K 5.
Adjustment - Vertical If a tolerance has been exceeded when performing the vertical check, the laser can be re-adjusted as follows. Switch the laser off. To go to Adjustment mode, hold down button (4a) first. Additionally press button (3). as soon as the y LED illuminates, release button (4a). The Z LED now flashes rapidly. The laser can now be adjusted in the Z-axis. The laser is correctly adjusted when the laser dot is precisely centred between Points 1 and 3 for the vertical check.
Operating status display and error messages via the LEDs The red LEDs (5a) next to the corresponding buttons show the operating mode selected.
Care and maintenance • Dirty lens glass on the beam emitter detracts from the quality of the beam. It should be cleaned with a soft cloth. • Clean the laser unit with a damp cloth. Do not spray or immerse the unit! Do not use solvents or thinners! The LAR-250 rotation laser must be handled carefully, in the same way as any precision optical instrument. Technical data Laser type: Red diode laser, wavelength 635 nm Output: < 1 mW, Laser Class 2 to EN 60825-1:03-10 Self-levelling range: ca.
