DL DUAL GRADE LASER

USER’S MANUAL

CONTENTS

1. What’s what

2. Operation

3. Calibration

4. Battery power

5. Technical specifi cation

6. Warranty

WARNING!

Do not stare directly into the laser beam.

Follow the advise issued by your national occupational safety agency.

3.

4.

5.

1. WHAT’S WHAT

1. Sight groves, X and Y axes

2. Rotating head, laser radiation output

3. Control panel, X-axis

4. Handle

5. Control panel, Y-axis

6. 5/8” thread for high X-grades

7. 5/8” thread for low X-grades

8. Charger connector

1.

2.

6.

7.

8.

1.

2.

3.

4 .

5 .

1. On/Off

2. Direction indicator

3. Value of grade or RPM

4. Percent/Promille indicator

5. RPM indicator

6. Cross axis grade indicator

7. Keylock indicator

15.

8. } Arrow – Move right on display

9. | Arrow – Move left on display

10. Manual/Auto indicator

11. Mode – Switch to RPM or user confi guration

12. Tilt function indicator

13. Plus – Increase grade or toggle function

14. Minus – Decrease grade or toggle function

15. Battery indicator

14.

MODE

13.

12 .

11. 10 .

9 .

8 .

7 .

6.

2. OPERATION

Turning the laser on

Place the DL on the tripod, align the housing with the sight grove. Turn the laser on with the

ON

/

OFF

button (1) on the laser key pad. If the housing is too tilted, the laser will not turn on, and the display will show a stylized level bubble to indicate which direction to adjust.

Code lock

If the code lock function is enabled (by your dealer), you will be prompted to dial in your user code when the instrument is turned on. Dial it in by selecting the digit with the arrow buttons (8,9), and setting the digit with the +/- buttons (13,14). If you lose your user code, you have ten attempts, then the laser is permanently locked and must be returned to your AMA Laser Systems dealer for unlocking.

Grade setting

To set a grade in the X direction, use the X control panel. Look at the grade symbols on the housing to see which direction positive grade goes. Set the desired X grade with the +/- buttons (13,14). Press once, and the grade changes 0,0015% or 1,5mm/100m. By holding down the key, the grade accelerates.

You can set the grade directly to the desired value without scrolling. If you press + or - once, the lowest fi gure starts blinking on the display. As long as it blinks, you can select the next fi gure using the arrow buttons (8,9), and change its value with the +/- buttons. After a few seconds of inactivity, the blinking stops. Setting the Y grade is done in the same way, but using the Y control panel.

The self-levelling action is centered around the grade you put in. This means that as you increase the grade, the mechanism comes closer to the self levelling range limit. When you need an X grade larger than 12%, you need to mount the laser using the second tilted 5/8” thread (no. 6 in What´s what).

Setting the rotation speed

On either control panel, press the

MODE

button (11). The current rotation speed is shown on the display. Change the speed with the +/- buttons. You can select the following speeds: 75, 150, 300, 600, 900 and 1200 rpm. Note that the DL draws more current the higher you set the rotation speed. For long battery life, use a lower speed. For higher accuracy when working with machine receivers and machine control systems, use a higher speed.

User confi guration

On either control panel, press the

MODE

button (11) and keep it depressed for a few seconds. You can now see the user confi guration screen on the display. In this mode you can control seven functions: Mirroring of the Y axis grade,

Tilt function, Auto/Manual, Keylock, Wind, Scope and House. Scroll through the functions with the arrow buttons, toggle the function with the +/- buttons.

Mirroring of the Y axis grade

This function allows you to conveniently switch sign on the Y axis, e.g. from +3,25% to -3,25%. When grading roads, it enables you to grade the camber on one side of the road, then with the same laser setup switch sign of the

Y grade to do the opposite camber.

The cross axis grade indicator (6) shows in which direction the Y grade is running. Change the direction by toggling with the +/- buttons. The direction changes on the indicator, and the laser automatically adjusts to the new grade.

Tilt function

With the tilt function activated, the laser will turn off and warn if it has accidentally moved since startup. To start again after the laser has tilted, press

ON

/

OFF

. The Tilt function indicator (12) shows the status of the function.

Manual/Auto

By selecting

MANUAL

, you turn off the self levelling mechanism of the DL. This enables you to set up manually, for instance to work steeper slopes than 20%. The display shows

MANUAL

( 10). Please be careful when using this function, as the Tilt function will not work. The laser can be knocked out of position without warning you.

Keylock

To avoid accidental change of the grade, you can disable all buttons except

ON

/

OFF

and

MODE

by activating Keylock.

To turn this function off, press

MODE

. The display lights the

KEYLOCK

indicator when the function is active.

Wind

The Wind function gives you a chance to work in windy or vibrating conditions, when the beam otherwise shuts off

because of inaccuracy. It works with a time delay before a disturbance is acted upon by the automatic self levelling.

Set Wind between 1-3 for increasing wind or vibration. Note that the accuracy decreases with a higher value. Wind is always set to 0 (inactive) at startup.

Scope

With this function you calibrate any sight aid (sight groves, diopter, scope etc.) mounted on the laser top. This adjustment rotates the internal movement. The effect is the same as if you were physically moving the DL housing.

To calibrate, do the following: Mount the DL on a tripod, ensure that the housing is level (use the House function described below). Set X and Y to 0. Mount a detector on a rod at a distance of 20m. Aim the DL’s X direction with the sight aid accurately at the detector window. Set the detector height to give a center reading. Set Y to +5%. Select

SCOPE

in the configuration menu. You will see an indicator showing an 8 in the center position. If the beam is high on the detector, you should press the left arrow for bringing the beam down the center position on the detector. Keep pressing and the beam will come down. The display will indicate as you move away from the center position. When the indicator is full, you can still continue adjusting. With a low beam, use the right arrow. Press the

MODE

button to confi rm when the calibration is right.

House

This function simulates externally mounted bubble vials for levelling the housing. You need to level the housing mainly to avoid errors when using sight aids (diopter, scope etc.) mounted on the housing roof of the instrument. Select

HOUSE

with the +/- keys. The displays will now show stylized bubble vials that show you if the housing is level in each direction. Adjust the position of the housing, and wait for the instrument to level to get a new reading on the vial symbol. The accuracy of the center bubble is approx 0,5 degrees, which gives a maximum alignment error between the scope and the main axis of 1cm on 100m. Besides the center reading there are two positions of the bubble on either side. To exit the House function, press

MODE

.

3. CALIBRATION

Calibration checks should be done regularly to ensure good results. Mount the DL on a tripod. Set X and Y grades to 0. Using the sight grove, aim the laser in positive X direction at a receiver at a distance of 50m (set the reciever to its minimum deadband). Adjust the height to get a stable centre reading from the receiver. Turn the laser around

180 degrees, aim at the receiver, and check the height difference. Do the same check in the Y direction. If you error in any of the axes is larger than 5mm, your laser is out of calibration and should be sent to your AMA Laser Systems dealer for calibration.

4. BATTERY POWER

The DL is powered by an in-built battery pack. The battery life during operation is about 60 hours under normal conditions with a fresh battery pack. With a worn battery pack and in cold temperatures, the laser can still operate some 20 hours. Using a lower rotation speed will prolong the lasers operation time per charge.

The battery indicator (15) on the display gives a rough indication of the remaining battery life. The display will show a blinking battery indicator when the battery is low and close to power down.

If the DL shuts down due to low battery, the display will show ”bA Lo”. In this case, shut the laser off and charge.

Charge the battery for 7 hours for full charge. The fi rst 4 hours will charge fast.

The laser can be operated when charging. In emergency situations, as little as 15 minutes of charging will give several hours of battery life. A full charge over the weekend should give you more than a week’s operation. If possible, stick to this charging scheme. If you charge more often, it will shorten the life of the battery. You need not worry about overcharging. The charger can be left connected to the instrument without risking battery damage.

The external power cable can be connected to a 12V battery for long, uninterrupted operation. The DL will not charge off the 12V cable.

Longer periods of non-use without charging will drain the batteries, causing poor capacity. You will need to charge and discharge a couple of times to get the battery up to full capacity after a longer period on the shelf.

This will however not cause noticeable permanent damage. For best performance, make a habit of maintenance charging once a month.

5. TECHNICAL SPECIFICATION

Laser source.......................................... Visible diode, 635 nm, Class 2 or 3R

Range .................................................. 500 m radius

Accuracy at 0% grade ........................... +/-5 mm per 100 m

Grade range, X direction ....................... -5% to +20%

Grade range, Y direction ....................... -7% to +7%

Self levelling range................................ +/-11%

Rotation speed ...................................... Selectable from 0 to 75, 150, 300, 600, 900, 1200 Rpm

Operating temperature range ................ -20 to +50 centigrade, -4ºF to +120ºF

Battery ................................................. Built-in NiCd 5.7Ah, 12V

Charging time ....................................... 7 Hrs

Operating time per charge..................... 60 Hrs

Display................................................. 2 Custom LCD displays, backlight

Sealing................................................. Waterproof, Nitrogen purged

Dimensions ........................................... Width 200 mm, Height 200 mm, Lenght 210 mm

Weight ................................................. 5.8 Kg

6. WARRANTY

Products sold by AMA Laser Systems AB (AMA) are warranted by the company in the following manner to the following extent:

Subject to the succeeding provision hereof, AMA warrants products sold by AMA twenty-four (24) months after date of invoice from AMA. The manufacturer’s liability under this warranty is limited to repairing or replacing any product returned to the factory or authorised service centre and judged, upon inspection to have been defective in material or workmanship.

This warranty covers the cost of labour as well as parts, but does not cover the cost of transportation to the factory or authorised service centre.

The forgoing states the entire liability of AMA to the owner of a registered AMA product.

AMA shall not be held responsible for any consequential damages of any kind. The forgoing is in lieu of all other warranties expressed or implied. In case of malfunction, contact your AMA dealer for shipping instructions.

To help us with our records we would very much appreciate if you fi ll out the warranty card and return it to your appointed AMA dealer. Alternatively, you can register on our home site www.amalaser.com.

AMA Laser Systems AB

Garpenbergsgatan 6

SE-163 53 SPÅNGA

SWEDEN

Tel

Fax: + 46 (0)8981099

E-mail: [email protected]

LASER RADIATION

AVOID DIRECT EYE EXPOSURE

CLASS 3R LASER PRODUCT