DCLE14201 - Laser pointer DEWALT - Free user manual and instructions

USER MANUAL DCLE14201 DEWALT

English (original instructions) 28

Technical diagram of a mechanical assembly with numbered components labeled 15 and 16

Fig. D

Diagram of a DSLR camera with labeled parts including 14, 15, and directional arrows indicating motion or assembly.

Fig. C

Diagram of a device control panel with numbered labels pointing to various functions like buttons, dials, and switches.

Fig. E

45° ≥90m (30') a

90° b a b a

Fig. F

graph TD
    A["Step 1,2: Vehicle with X at Step 3"] --> B["9 m (30'): Step 3 with X"]
    B --> C["Step 8: Step 7 with X at Step 7"]
    C --> D["Steps 4,5: Step 6 with X at Step 6"]

Fig. G

STEP 7 a b STEP 4 a STEP 6 b STEPS 2,3 —1.5 m (5') STEP 1 STEP 5

Fig. H Fig. I

1 6

1 17

Fig. J 18 20 19 20

Fig. K

Technical line drawing of a mechanical component with directional arrows and angle annotation (no readable text or symbols)

Fig. L

FLASHING FLASHING FLASHING FLASHING

Fig. M

Line drawing of a tripod-mounted camera setup with no visible text or symbols

Fig. N

DEWALT 22

SIGTE-LASERAPPARAT

DCLE14201

Tillykke!

You have chosen a DEWALT laser level. Years of experience, thorough product development and innovation make DEWALT one of the most reliable partners for professional laser level users.

DCLE14201
Type 1
Light Source Laser diodes
Laser Wavelength Green: 510 nm–530 nm,Red: 630 nm–690 nm
Laser Power 2.0 mW (green), 1.5 mW (red)CLASS 2 LASER PRODUCT
Working Range Green: 45 m (150'), 100 m (330') withdetector (sold separately)Red: 30 m (100'), 50 m (165') withdetector (sold separately)
Accuracy (Plumb) +/-3 mm per 10 m
Accuracy (Level) +/-3 mm per 10 m
Battery Low 3 LEDs Flashing on Battery meter
Flashing Laser Beams Tilt range exceeded/unit is not level
Power Source Integral Li-Ion Battery
Input power 5–20V, <= 3.0 A
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 60 °C
Humidity Maximum relative humidity 80% fortemperatures up to 31 °C, decreasinglinearly to 50% relative humidityat 40 °C
Altitude 2000 m

WARNING: To reduce the risk of injury, read the instruction manual.

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word. Please read the manual and pay attention to these symbols.

DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING: Indicates a potentially hazardous situation when, if not avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation when, if not avoided, may result in minor or moderate injury.

NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.

Davotes risk of electric shock.

Diabetes risk of fire.

Safety Instructions for Lasers

WARNING! Read and understand all instructions. Failure to follow all instructions listed below may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS

- Do not operate the laser in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.

- The internal battery of the laser level is not user serviceable.

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• Store idle laser out of reach of children and other untrained persons. Lasers are dangerous in the hands of untrained users.
• Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one laser, may create a risk of injury when used on another laser.
• Tool service MUST be performed only by qualified repair personnel. Repairs, service or maintenance performed by unqualified personnel may result in injury. For the location of your nearest authorised DEWALT repair agent, refer to the list of authorised DEWALT repair agents on back of this manual or visit www.2helpU.com on the Internet.
• Do not use optical tools such as a telescope or transit to view the laser beam. Serious eye injury could result.
• Do not place the laser in a position which may cause anyone to intentionally or unintentionally stare into the laser beam. Serious eye injury could result.
• Do not position the laser near a reflective surface which may reflect the laser beam toward anyone's eyes. Serious eye injury could result.
• Turn the laser off when it is not in use. Leaving the laser on increases the risk of staring into the laser beam.
• Do not operate the laser around children or allow children to operate the laser. Serious eye injury may result.
• Do not remove or deface warning labels. If labels are removed user or others may inadvertently expose themselves to radiation.
• Position the laser securely on a level surface. Damage to the laser or serious injury could result if the laser falls.

WARNING: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

WARNING! DO NOT DISASSEMBLE THE LASER. There are no user serviceable parts inside.

Disassembling the laser will void all warranties on the product. Do not modify the product in any way. Modifying the tool may result in hazardous laser radiation exposure.

Additional Safety Instructions for Lasers

• Do not replace a laser diode with a different type. If damaged, have the laser repaired by an authorised repair agent.
• Do not use the laser for any purpose other than projecting laser lines.
• An exposure of the eye to the beam of a class 2 laser is considered safe for a maximum of 0.25 seconds. Eyelid reflexes will normally provide adequate protection.

Residual Risks

The following risks are inherent to the use of this device:

• injuries caused by staring into laser beam.

Labels on the tool

The following pictographs are shown on the tool:

LASER 2 ≤2.0mW@510-530nm IEC 60825-1:2014/EN 50689:2021 EN 60825-1:2014/A11:2021 CONSUMER LASER PRODUCT

LASER 2 ≤1.5mW @ 630-690nm IEC 60825-1:2014 / EN 50689:2021 EN 60825-1:2014/A11:2021 CONSUMER LASER PRODUCT

Green laser Red laser

Read the instruction manual before use.

Laser warning.

Do not stare into the laser beam.

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Important Safety Instructions for All Integral Battery Charging

WARNING: Read all safety warnings, instructions, cautionary markings for the battery, USB cable and product. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

WARNING: Only charge products using a certified power adapter that is compliant with applicable country regulations and international/regional safety standards with an output of 5-20V, 3A. Using adapters that do not meet applicable safety standards could result in injury.

• Use only a power supply and cable recommended by the manufacturer for charging.
• Charge this laser every month if not in constant use, and after each use when used often to ensure battery longevity.
• The provided USB cable is not intended for any uses other than charging DEWALT rechargeable tools with USB-C ports. Charging other types of tools may cause their batteries to overheat and burst, resulting in personal injury, property damage, fire, electric shock or electrocution.
• DO NOT expose USB cable to water, rain or snow.
• Pull by the plugs rather than the cord when disconnecting the USB cable. This will reduce the risk of damage to the plugs and cord.
• Make sure that the cord is located so that it will not be stepped on, tripped over or otherwise subjected to damage or stress.
• DO NOT use a USB cable with a damaged cord or plugs. Have them replaced immediately.
• Foreign materials of a conductive nature, such as, but not limited to, grinding dust, metal chips, steel wool, aluminum foil or any buildup of metallic particles should be kept away from the USB and USB-C plugs and port.
• Always unplug the USB cable from the power supply when there is no tool attached to it.

Personal Safety

• Stay alert, watch what you are doing, and use common sense when operating the laser level. Do not use the laser level when you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the laser level may result in serious personal injury.
• Use personal protective equipment. Always wear eye protection. Depending on the work conditions, wearing protective equipment such as a dust mask, non-skid safety shoes, hard hat, and hearing protection will reduce personal injury.

Laser Level Use and Care

• Do not use the laser level if the pendulum lock/unlock and power switch does not turn the laser level on or off. Any laser level that cannot be controlled with the switch is dangerous and must be repaired.
• Follow instructions in the Maintenance section of this manual. Use of unauthorised parts or failure to follow Maintenance instructions may create a risk of electric shock or injury.

Date Code Position (Fig. A)

The production date code 21 consists of a 4-digit year followed by a 2-digit week and is extended by a 2-digit factory code.

Before First Time Use

• Check for damage to the tool, parts or accessories which may have occurred during transport.
  • Take the time to thoroughly read and understand this manual prior to operation.

Description (Fig. A)

WARNING: Never modify the power tool or any part of its damage or personal injury could result.

1 Keyhole slot
2 Laser head

EnGLIsh

3 Laser window
4 Laser label location
5 USB port cover
6 Magnetic pivot bracket
7 Brightness control button
8 Pendulum lock indicator
9 Remote control link indicator (DCLE14201G only)
10 Battery meter
11 Horizontal laser line on/off button
12 Vertical laser line on/off button
13 Pendulum lock/unlock and power switch
14 Fine adjust knob
15 USB cable

Intended Use

The DCLE14201 Cross Line Laser is a Class 2 laser product. It is a self-leveling laser tool that can be used for horizontal (level) and vertical (plumb) alignment projects.

The crossline laser is a professional tool. DO nOT let children come into contact with the tool. Supervision is required when inexperienced operators use this tool.

- This product is not intended for use by persons (including children) suffering from diminished physical, sensory or mental abilities; lack of experience, knowledge or skills unless they are supervised by a person responsible for their safety. Children should never be left alone with this product.

Charging Procedure (Fig. A, B)

1. Pull the USB charging port cover 5 away from the laser level.
2. Use a compatible power supply with this unit. For best results, use a USB Power Delivery (PD) capable power supply of 45W or greater.
3. Insert the USB cable 15 into the charging port 16.

4. Plug the power supply into a wall outlet.

5. Charging is complete when all three bars of the battery meter 10 light up on the side of the laser level. The battery can be left charging or the USB cable can be disconnected.

Important Charging Notes

• The laser level may become warm to the touch while charging. This is a normal condition, and does not indicate a problem. To facilitate the cooling of the laser level after use, avoid placing the laser level in a warm environment such as in a metal shed or an uninsulated trailer.
• If the laser level does not charge properly, take the laser level and USB cable to your local service center.
• You may charge a partially used battery whenever you desire with no adverse effect on the laser level.

nOTE: The laser level may be used while charging.

Hot and Cold Condition

On charging, when the temperature is 52 °C or higher (hot condition) or 0 °C or colder (cold condition), the charging is turned off and following battery state of charge pattern will flash:

Until the temperature is between 50 °C and 0 °C, the charging will not turn on and the indication shown above will continue.

Viewing the Battery Meter (Fig. A, C)

When the laser level is ON, the state of battery meter 10 on the keypad indicates how much power remains.

- All three LEDs will flash when the battery level is low (< 10%). The laser level may continue to operate for a short time while the battery power continues to drain.

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• After the battery is charged, and the laser level is turned ON again, the battery indicator level will indicate full capacity.
- If any or all of the LEDs on the battery meter remain ON, this indicates that the laser level is not fully powered OFF. When the laser level is not in use, make sure the pendulum lock/unlock and power switch 13 is placed to the DOWN Locked/OFF position.

BATTERY METER LED
STATE OF CHARGE

Battery is 80%–100% charged

Battery is 50%–80% charged

Battery is 10%–50% charged

Battery is < 10% charged

Battery is < 10% charged, unit is charging

OPERATING TIPS

• To extend battery life per charge, turn the laser level off when it is not in use.
• To ensure the accuracy of your work, check the laser level calibration often. Refer to Checking Laser Accuracy.
- Before attempting to use the laser level, make sure it is positioned securely, on a smooth, flat stable surface that is level in both directions.

CAUTION: To reduce the risk of serious injury, must are directly into the laser beam with or without glasses.

• Always mark the center of the beam created by the laser level.

• Extreme temperature changes can cause movement or shifting of building structures, metal tripods, equipment, etc., which can effect accuracy. Check your accuracy often while working.
• If the laser level has been dropped, check to make sure your laser level is still calibrated. Refer to Checking Laser Accuracy.

Turning the Laser On (Fig. C)

Your laser level is equipped with a three-position pendulum lock/unlock and power switch 13.

• Horizontal position: Power off
- Middle position: Manual Slope Mode (Power On, Pendulum Locked)
• Vertical position: Self-Leveling Mode (Power On, Pendulum Unlocked)

The laser beams will turn on automatically if the pendulum lock/unlock and power switch is moved from the horizontal position to either the middle position or the vertical position.

Self-Leveling Mode

When the switch is placed in the vertical position, the laser will self-level as long as the surface the laser level is placed on is less than 4^ tilt.

With the laser level off, place it on a flat surface. This model has a keypad to activate the laser beams with two buttons; one for a horizontal laser line 11 and one for a vertical laser line 12. Each laser line is powered on by moving the pendulum lock/unlock and power switch to the UNLOCKED/ON position and pressing the required laser line button on the keypad. The laser lines can be powered one at a time or at the same time. Pressing the laser line buttons again turns the laser lines off. The pendulum lock/unlock and power switch disables the lasers as well as locks the pendulum, and should always be placed in the LOCKED/OFF position when the laser level is not in use.

Manual Slope Mode

When the switch is placed in the middle position, the laser unit is in manual slope mode. The laser will not self level in

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this mode and is used in situations where a fixed laser line is required.

NOTE: The laser is NOT LEVEL when the pendulum lock indicator 8 is illuminated, and the beams will flash 3 times every 10 seconds to further indicate this.

Laser Line Brightness (Fig. A, C)

The brightness of the laser lines can be adjusted by pressing the brightness level 7 button on the keypad which will cycle through high, medium, and low brightness.

Lowering the brightness of the laser level increases battery life.

Remote Control Compatible (Fig. A) Optional Accessory

Only available via service centres

WARNING: Do not operate the laser level via remote control when not in the same room or in presence of the laser level.

An optional DCLEAUSBRC1 remote control allows one person to set up and operate the DCLE14021G model laser level from a distance. The DCLEAUSBRC1 remote control is not compatible with the DCLE14021R model laser level.

The remote control link indicator 9 flashes blue to indicate a remote control is ready to pair.

The functions on the remote keypad are identical to the functions on the laser level itself (horizontal laser line on/off button 11, vertical laser line on/off button 12, brightness control 7.

Checking Laser Accuracy

The laser levels are calibrated and sealed at the factory. It is recommended that you perform an accuracy check prior to using the laser level for the first time (in case the laser level was exposed to extreme temperatures) and then regularly to ensure the accuracy of your work. When performing any of the accuracy checks listed in this manual, follow these guidelines:

• Use the largest area/distance possible, closest to the operating distance. The greater the area/distance, the easier to measure the accuracy of the laser. Refer to Field Calibration Check.
• Place the laser level on a smooth, flat, stable surface that is level in both directions.
  • Mark the center of the laser line.

Field Calibration Check

Checking Accuracy – Horizontal Beam, Scan Direction (Fig. A, E)

Checking the horizontal scan calibration of the laser level requires two walls at least 9 m (30") apart. It is important to conduct a calibration check using a distance no shorter than the distance of the applications for which the tool will be used.

1. Place the laser on a smooth, flat, stable surface that is level in both directions.
2. Power on the laser and slide the pendulum lock/unlock and power switch 13 to the vertical position. Refer to Turning the Laser On.
3. Turn on the laser level's horizontal beam and pivot the laser level approximately 45^ so that the rightmost end of the laser line is striking the opposing wall at a distance of at least 9 m (30'). Mark (a) on the opposing wall.
4. Pivot the laser level approximately 90^ to bring the leftmost end of the laser line around to mark (a). Mark the center of the beam (b).
5. Measure the vertical distance between the marks (a and b).

- If the measurement is greater than the values shown below, the laser level must be serviced at a DEWALT service centre.

ENGLISH

Distance Between Walls Allowable Distance Between a and b
10.0 m 3.0 mm
12.0 m 3.6 mm
15.0 m 4.5 mm

Checking Accuracy – Horizontal Beam, Pitch Direction (Fig. A, F)

Checking the horizontal pitch calibration of the laser level requires a single wall at least 9 m (30') long. It is important to conduct a calibration check using a distance no shorter than the distance of the applications for which the tool will be used.

1. Attach the laser level to one end of a wall using its pivot bracket.
2. Power on the laser and slide the pendulum lock/unlock and power switch 13 to the vertical position. Refer to Turning the Laser On.
3. Turn on the laser level's horizontal beam and pivot the laser level toward the opposite end of the wall and approximately parallel to the adjacent wall.
4. Mark the center of the beam at two locations (a, b) at least 9 m (30') apart.
5. Reposition the laser level to the opposite end of the wall.
6. Turn on the laser level's horizontal beam and pivot the laser level back toward the first end of the wall and approximately parallel to the adjacent wall.
7. Adjust the height of the laser level so that the center of the beam is aligned with the nearest mark (b).
8. Mark the center of the beam (c) directly above or below the farthest mark (a).
9. Measure the distance between these two marks (a, c).
10. If the measurement is greater than the values shown below, the laser level must be serviced at an authorised service centre.

Distance Between Walls Allowable Distance Between a and c
10.0 m 6.0 mm
12.0 m 7.2 mm
15.0 m 9.0 mm

Checking Accuracy - Vertical Beam (Fig. A, G)

Checking the vertical (plumb) calibration of the laser level can be most accurately done when there is a substantial amount of vertical height available, ideally 6 m (20'), with one person on the floor positioning the laser level and another person near a ceiling to mark the position of the beam. It is important to conduct a calibration check using a distance no shorter than the distance of the applications for which the tool will be used.

1. Start by marking a 1.5 m (5') line on the floor.
2. Power on the laser and slide the pendulum lock/unlock and power switch 13 to the vertical position. Refer to Turning the Laser On.
3. Turn on the laser level's vertical beam and position the unit at one end of the line, facing the line.
4. Adjust the unit so its beam is aligned and centered on the line on the floor.
5. Mark the position of the laser beam on the ceiling (a). Mark the center of the laser beam directly over the midpoint of the line on the floor.
6. Reposition the laser level at the other end of the line on the floor. Adjust the unit once again so its beam is aligned and centered on the line on the floor.
7. Mark the position of the laser beam on the ceiling (b), directly beside the first mark (a).
8. Measure the distance between these two marks.

- If the measurement is greater than the values shown below, the laser level must be serviced at an authorised service centre.

Distance Between Floor and Ceiling	Allowable Distance Between a and b
2.5 m 1.7 mm
3.0 m 2.1 mm
4.0 m 2.8 mm
6.0 m 4.1 mm

Using the Laser (Fig. K)

Leveling the Laser

As long as the laser level is properly calibrated, the laser level is self-leveling (in pendulum unlocked mode). Each laser level is calibrated at the factory to find level as long as it is positioned on a flat surface within average ±4^ of level. No manual adjustments are required.

If the laser level has been tilted so much that it cannot self-level ( >4^ ), the laser beam will flash. There are two flashing sequences associated with the out of level condition.

• In pendulum unlocked mode, the laser diode blinks continuously.
• In manual slope mode, the laser diode blinks three times every ten seconds (total cycle), repeating this pattern continuously.

When the beams flash THE LASER LEVEL IS NOT LEVEL (OR PLUMB) AND SHOULD NOT BE USED FOR DETERMINING OR MARKING LEVEL OR PLUMB.

Rotating the Laser Head (Fig. A, D)

The laser head 2 is permanently attached to the laser level base. This laser head can be manually rotated by hand by gripping the laser head and rotating, or by using the fine adjust knob 14 for smaller, more precise movements.

Fine Adjust (Fig. A, D)

The fine adjustment knob 14 on the side of the laser level is for lining up the vertical beam. Place the laser level on a flat surface and turn the knob to the right (clockwise) to rotate the laser level to the left, or to the left (anticlockwise) to move the beam to the right.

Using the Pivot Bracket (Fig. H, I)

The laser level has a magnetic pivot bracket 6 permanently attached to the unit.

WARNING: Position the laser level and/or wall mount or a suitable surface. Serious personal injury or damage to the laser level may result if the laser level falls.

• The bracket has a keyhole slot 1 so it can be hung from a nail or screw on any kind of surface.
• The bracket has magnets 17 which allow the unit to be mounted to most upright surfaces made of steel or iron. Common examples of suitable surfaces include steel framing studs, steel door frames, and structural steel beams.

Multi-Surface Mounting Plate (Fig. I, J)

1. To attach the laser level to a wooden stud 18, screw in multi-surface mounting plate 20 first and mount laser level using the laser's magnets 17.
2. To attach the laser level to a metal stud 19, sandwich the metal stud between the multi-surface mounting plate 20 and the laser's magnets 17. Placing the multi-surface mounting plate behind the metal stud will significantly increase the magnetic strength and holding capacity of the laser level.

MAINTENANCE

Your laser level has been designed to operate over a long period of time with minimum maintenance. Continuous satisfactory operation depends upon proper tool care and regular cleaning.

WARNING: To reduce the risk of serious personal injury, turn laser level off before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury.

- To maintain the accuracy of your work, check the laser level often to make sure it is properly calibrated. See Field Calibration Check.

EnGLIsh

• Calibration checks and other maintenance repairs may be performed by DEWALT service centres.
• Do not store your laser level in the case if the laser level is wet. The laser level should be dried first with a soft, dry cloth prior to storage.

Cleaning

WARNING: Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the laser level. These chemicals may weaken the materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the laser level; never immerse any part of the laser level into a liquid.

Exterior plastic parts may be cleaned with a damp cloth. Although these parts are solvent resistant, NEVER use solvents. Use a soft, dry cloth to remove moisture from the laser level before storage.

TROUBLESHOOTING

The Laser Level Does Not Turn On (Fig. A)

• Fully charge the battery.
- If the laser level is exposed to extremely hot/cold temperatures, the battery meter 10 will flash. Refer to Hot and Cold Condition. If the laser level has been stored in extremely hot temperatures, allow it to cool. The laser level will not be damaged by pressing the on/off button before cooling to its proper operating temperature.

The Laser Beams Flash (Fig. L)

In manual slope mode, flashing will occur 3 times every 10 seconds regardless of tilt, to remind the user they are in manual slope mode.

In unlocked mode, if the laser unit is tilted more than 4^ , the unit will flash every second, to indicate that while they are in self leveling mode, the unit is too tilted to properly self level.

THE FLASHING BEAMS CREATED BY THE LASER LEVEL ARE NOT LEVEL OR PLUMB AND SHOULD NOT BE USED FOR DETERMINING OR MARKING LEVEL OR PLUMB. Try repositioning the laser level on a more level surface. If the laser level battery has a low state of charge, the beams will flash in a distinctive pattern of 3 quick flashes in 1 second, followed by constant light output for 4 seconds. This flashing pattern indicates that the battery should be recharged.

The Laser Beams Will Not Stop Moving

The laser level is a precision instrument. Therefore, if it is not positioned on a stable (and motionless) surface, the laser level will continue to try to find level. If the beam will not stop moving, try placing the laser level on a more stable surface. Also, try to make sure that the surface is relatively flat, so that the laser level is stable.

Accessories (Fig. M)

The laser level is equipped with a 1/4"-20 and 5/8"-11 threads on the bottom of the unit to accommodate current or future DEWALT accessories, such as a tripod.

Figure M shows an example of accessories that are sold separately from these laser levels. Only use DEWALT accessories specified for use with this product. Follow the directions included with the accessory.

Laser Detector (Fig. N)

The laser detector 22 allows the laser line to be detected at much further distances than the visible range.

DE0892-XJ for the DCLE14201R red laser.

DE0892G-XJ for the DCLE14201G green laser.

WARNING: Since accessories, other than those offered by DEWALT, have not been tested with this product, use of such accessories with this laser level could be hazardous. To reduce the risk of injury, only DEWALT recommended accessories should be used with this product.

If you need any assistance in locating any accessory, please contact your nearest DEWALT dealer, or go to www.DEWALT.eu.

Service and Repairs

NOTE: Disassembling the laser level will void all warranties on the product.

To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment, such as service to the internal battery should be performed by authorised service centres. Service or maintenance performed by unqualified personnel may result in a risk of injury. To locate your nearest DEWALT service centre, go to www.2helpu.com.

Warranty

Go to www.DEWALT.eu for the latest warranty information.

LÁSER RETICULAR

DCLE14201

¡Enhorabuena!

Distanza tra le pareti Distanza ammissibile tra a e c

10,0 m 6,0 mm

12,0 m 7,2 mm

15,0 m 9,0 mm

Distância entre as paredes	Distância permissível entre a e c
10,0 m 6,0 mm
12,0 m 7,2 mm
15,0 m 9,0 mm

Verificar o rigor - feixe vertical (Fig. A, G)