CMHT77629 - Laser level Craftsman - Free user manual and instructions

USER MANUAL CMHT77629 Craftsman

Self-Leveling Cross-line Laser

Line drawing of a craftman-shaped electronic device casing with internal compartments and mounting holes (no text or symbols)

Figures

GRAFTSMAN ①23 ② ≤ 4° >4°

B

Technical line drawing of a mechanical device with labeled component (no text or symbols)

Technical diagram of a device with labeled components and battery terminals

©

1/4-20

Figures
D
①

a 45° ≥ 30 ft. (9m)

2

b a x 90°

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Figures
F
1

a 5 ft. (1.5m)

②

b a x D 5 ft. (1.5m)

Technical diagram of a device with numbered parts and labeled parts, including a U-shaped component and a vertical bar.

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Contents

• Laser Information
• User Safety
• Battery Safety
• Installing AA Batteries
• Turning the Laser On
• Checking Laser Accuracy
• Using the Laser
• Maintenance
• Troubleshooting
  • Service and Repairs
• Specifications

Laser Information

The CMHT77629 laser is a Class 2 laser product. The laser is a self-leveling laser tool that can be used for horizontal (level) and vertical (plumb) alignment projects.

User Safety

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 which, if not avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, 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.

If you have any questions or comments about this or any CRAFTSMAN® tool, go to www.CRAFTSMAN.com.

WARNING:

Read and understand all instructions. Failure to follow the warnings and instructions in this manual may result in serious personal injury.

SAVE THESE INSTRUCTIONS

WARNING:

Laser Radiation Exposure. Do not disassemble or modify the laser level. There are no user serviceable parts inside. Serious eye injury could result.

WARNING:

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

The label on your laser may include the following symbols.

Symbol Meaning
V Volts
mW Milliwatts
	Laser Warning
nm Wavelength in nanometers
2 Class 2 Laser

WARNING LABELS

For your convenience and safety, the following labels are on your laser.

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

WARNING: LASER RADIATION. DO NOT STARE INTO BEAM. Class 2 Laser Product.

CRAFTSMAN. CMHT77629 ! TYPE 1:3VDC Made in China SER. ≤1mW @630~680 nm IEC 60825-1:2014 Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007. www.CRAFTSMAN.com 888-331-4569

• If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
• Do not operate the laser in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. This tool may create sparks which may ignite the dust or fumes.
• Store an idle laser out of reach of children and other untrained persons. Lasers are dangerous in the hands of untrained users.
• Tool service MUST be performed by qualified repair personnel. Service or maintenance performed by unqualified personnel may result in injury. To locate your nearest CRAFTSMAN service center go to www.CRAFTSMAN.com.
• 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 modify the laser in any way. Modifying the tool may result in hazardous laser radiation exposure.

• 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, the user or others may inadvertently expose themselves to radiation.
• Position the laser securely on a level surface. If the laser falls, damage to the laser or serious injury could result.

Personal Safety

• Stay alert, watch what you are doing, and use common sense when operating the laser. Do not use the laser when you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the laser 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.

Tool Use and Care

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

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FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a different circuit (not the circuit to which the receiver is connected).
• Consult the dealer or an experienced radio/TV technician for help.

Canada, Industry Canada (IC) Notices

This Device complies with Industry Canada License-exempt RSS standard(s). Operation is subject to the following two conditions: 1) this device may not cause interference, and 2) this device must accept any interference, including interference that may cause undesired operation of the device.

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

Battery Safety

WARNING:

Batteries can explode, or leak, and can cause injury or fire. To reduce this risk:

• Carefully follow all instructions and warnings on the battery label and package.
• Always insert batteries correctly with regard to polarity (+ and -), as marked on the battery and the equipment.
• Do not short battery terminals.
• Do not charge disposable batteries.
• Do not mix old and new batteries. Replace all batteries at the same time with new batteries of the same brand and type.
• Remove dead batteries immediately and dispose of per local codes.
• Do not dispose of batteries in fire.
• Keep batteries out of reach of children.
• Remove batteries when the device is not in use.

Installing AA Batteries

Load new AA batteries in the CMHT77629 laser.

1. Turn the laser upside down.
2. On the bottom of the laser, lift up the latch to open the battery compartment cover (Figure B ①).
3. Insert two new, high-quality, name brand AA batteries, making sure to position the - and + ends of each battery as noted inside the battery compartment (Figure B ②).
4. Push the battery compartment cover closed until it snaps in place (Figure ⑧③).

When the laser is not in use, keep the Power/Transport Lock switch in the center (OFF) position (Figure A 2) to save battery power.

Turning the Laser On

1. Place the laser on a smooth, flat, level surface, with the laser facing straight ahead toward the opposing wall ( 0^ position).

2. Turn the laser ON to display the horizontal and vertical laser beams. Either:

3. Move the Power/Transport Lock switch to the left to keep the pendulum locked and display the cross beams in manual mode (Figure A 1).

4. Move the Power/Transport Lock switch to the right to unlock the pendulum and display the cross beams in self-leveling mode (Figure A ③).

5. Check the horizontal and vertical laser beams.

6. If the laser is tilted so much that it cannot self-level ( >4^ ), or the laser is not level in manual mode, the laser beams will flash.

7. If the laser beams flash, the laser is not level (or plumb) and should NOT BE USED for determining or marking level or plumb. Try repositioning the laser on a level surface.

8. If ANY of the following statements are TRUE, continue with the instructions for Checking Laser Accuracy BEFORE USING THE LASER for a project.

9. This is the first time you are using the laser (in case the laser was exposed to extreme temperatures).

10. The laser has not been checked for accuracy in a while.
11. The laser may have been dropped.

Checking Laser Accuracy

The laser tools are sealed and calibrated at the factory. It is recommended that you perform an accuracy check prior to using the laser for the first time (in case the laser 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.
• Place the laser on a smooth, flat, stable surface that is level in both directions.
  • Mark the center of the laser beam.

Horizontal Beam - Scan Direction

Checking the horizontal scan calibration of the laser requires two walls at least 30' (9m) 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 back of the laser against a wall and facing straight ahead toward the opposing wall.
2. Move the Power/Transport Lock switch to the right (Figure A 3) to turn the laser ON in self-leveling mode and display the horizontal and vertical beams.

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1. Turn the laser 45 ^o counter-clockwise so that the right-most end of the laser line is displayed on the wall (Figure D 1).
2. Mark a on the center of the beam on the wall.
3. Turn the laser 90° clockwise so that the left-most end of the laser line is displayed near ⓐ (Figure D ②).
4. Mark ⓑ on the center of the beam on the wall.
5. Measure the vertical distance between a and b.
6. If your measurement is greater than the Allowable Distance Between a and b for the corresponding Distance Between Walls in the following table, the laser must be serviced at an authorized service center.

Distance Between Walls	Allowable Distance Between a and b
30' (9m) 7/16"	(11.0mm)
40' (12m) 9/16"	(14.4mm)
50' (15m) 23/32"	(18.0mm)

Horizontal Beam - Pitch Direction

Checking the horizontal pitch calibration of the laser requires a single wall at least 30' (9m) 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. Place the laser against the end of the wall (Figure ①).
2. Move the Power/Transport Lock switch to the right (Figure A ③) to turn the laser ON in self-leveling mode and display the horizontal and vertical beams.
3. At least 30' (9m) apart along the laser beam, mark a and b.
4. Move the laser to the opposite end of the wall (Figure ⑤②).

5. Position the laser toward the first end of the same wall and parallel to the adjacent wall.

6. Adjust the height of the laser so the center of the beam is aligned with ⓑ.

7. Directly above or below ⓐ, mark Ⓒ along the laser beam (Figure E 3).
8. Measure the distance between a and c.
9. If your measurement is greater than the Allowable Distance Between a and c for the corresponding Distance Between a and b in the following table, the laser must be serviced at an authorized service center.

Distance Betweena and b	Allowable DistanceBetween a and c
30' (9m) 7/16"	(11.0mm)
40' (12m) 9/16"	(14.4mm)
50' (15m) 23/32"	(18.0mm)

Vertical Beam - Plumb

Checking the vertical (plumb) calibration of the laser can be most accurately done when there is a substantial amount of vertical height available, ideally 30' (9m), with one person on the floor positioning the laser 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. On the floor between two walls, mark a 5 ft. (1.5 m) line that is parallel to the adjacent wall (Figure F①).
2. Move the Power/Transport Lock switch to the right (Figure A ③) to turn the laser ON in self-leveling mode and display the horizontal and vertical beams.
3. Place the laser at one end of the line on the floor, making sure the vertical laser beam is aligned and centered on the line.

4. Where the vertical laser beam appears on the ceiling, mark a. (This should be directly over the midpoint of the line on the floor.)

5. Move the laser to the other end of the line on the floor (Figure F 2).

6. Where the vertical laser beam appears on the ceiling, mark ⓑ, directly beside the first mark ⓐ.
7. Measure the distance between and .
8. If your measurement is greater than the Allowable Distance Between a and b for the corresponding Ceiling Height D in the following table, the laser must be serviced at an authorized service center.

Ceiling Height D	Allowable Distance Between a and b
8' (2.5m) 1/8"	(3.0mm)
10' (3.0m) 5/32"	(3.6mm)
14' (4.0m) 7/32"	(4.8mm)
20' (6.0m) 5/16"	(7.2mm)
30' (9.0m) 15/32"	(10.8mm)

Using the Laser

Operating Tips

• Always mark the center of the beam created by the laser.
• Extreme temperature changes may cause movement of internal parts that can affect accuracy. Check your accuracy often while working.
• If the laser is ever dropped, check to make sure it is still calibrated.
• As long as the laser is properly calibrated, the laser is self-leveling. Each laser 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.
• Use the laser on a smooth, flat, level, surface.

Turning the Laser Off

Slide the Power/Transport Lock switch to the OFF position (Figure A ②) when the laser is not in use. If the switch is not placed in the OFF position, the laser will not turn off.

Using the Laser with the Bracket

A bracket (Figure G) is included with the laser so you can easily attach the laser to a stud or wall.

Securely attach the laser to the bracket.

• Using the 1/4-20 thread on the bottom of the laser (Figure G 1), position the laser on the 1/4-20 thread on the bracket arm (Figure G 2).
• Turn the bracket knob (Figure③) clockwise to lock the laser on the 1/4-20 thread on the bracket arm.
• The bracket has magnets and a keyhole for hanging the laser from a wall (Figure G 4).

Using the Laser with Other Accessories

WARNING:

Since accessories other than those offered by CRAFTSMAN have not been tested with this laser, use of such accessories with this laser could be hazardous.

Only use CRAFTSMAN® accessories that are recommended for use with this model. Accessories that may be suitable for one laser may create a risk of injury when used with another laser.

The laser is equipped with a 1/4-20 female thread on the bottom (Figure ©) to accommodate current or future CRAFTSMAN® accessories.

Other recommended accessories for use with this laser are available at extra cost from your local dealer or authorized service center. If you need assistance locating any accessory, please contact your nearest CRAFTSMAN service center or visit our website:

www.CRAFTSMAN.com.

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Maintenance

• When the laser is not in use, clean the exterior parts with a damp cloth, wipe the laser with a soft dry cloth to make sure it is dry, and then store the laser in the kit box provided.
• Although the laser exterior is solvent resistant, NEVER use solvents to clean the laser.
• Do not store the laser at temperatures below -5^ (-20^) or above 140^ (60^) .
• To maintain the accuracy of your work, check the laser often to make sure it is properly calibrated.
• Calibration checks and other maintenance repairs may be performed by CRAFTSMAN service centers.

Troubleshooting

The Laser Does Not Turn On

• Check the AA batteries to make sure:
• Each battery is installed correctly, according to (+) and (−) listed inside the battery compartment.
• The battery contacts are clean and free of rust or corrosion.
• The batteries are new, high-quality, name brand batteries to reduce the chance of battery leakage.

- Make sure the AA batteries are in proper working condition. If in doubt, try installing new batteries.

- When using rechargeable batteries, make sure the batteries are fully charged.

- Be sure to keep the laser dry.

- If the laser has been stored in extremely hot temperatures, allow it to cool. The laser level will not be damaged by using the Power/Transport Lock switch before cooling to its proper operating temperature.

The Laser Beams Flash

When in self-leveling mode, the lasers are designed to self-level up to an average of 4^ in all directions. If the laser is tilted so much that the internal mechanism cannot level itself (or the laser is not level when in manual mode), the laser beams will flash indicating that the tilt range has been exceeded.

THE FLASHING BEAMS CREATED BY THE LASER ARE NOT LEVEL OR PLUMB AND SHOULD NOT BE USED FOR DETERMINING OR MARKING LEVEL OR PLUMB. Try repositioning the laser on a more level surface.

The Laser Beams Will Not Stop Moving

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

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 should be performed by authorized service centers. Service or maintenance performed by unqualified personnel may result in a risk of injury. To locate your nearest CRAFTSMAN service center, go to www.CRAFTSMAN.com.

Warranty

Go to www.CRAFTSMAN.com for the latest warranty information.

Specifications

	CMHT77629
Light Source Laser diodes
Laser Wavelength 630–680 nm visible
Laser Power ≤ 1 mW CLASS 2 LASER PRODUCT
Working Range	33' (10m)
Accuracy	±1/4" @ 33' (±6 mm @ 10m)
Power Source 2 AA (1.5V) size batteries (3V DC)
Operating Temperature 14°F to 104°F (-10°C to 40°C)
Storage Temperature -5°F to 158°F (-20°C to 70°C)
IP Rating IP50

Contenido

CRAFTSMAN. CMHT77629 Laser 2 ≤1mW @630~680 nm IEC 60825-1:2014 COMplies with 21CR 1040.0 and 1040.11 except for deviations pursuant to laser Notice No. 50, dated June 24, 2007. TYPE 1:3VDC Made in China SER. www.CRAFTSMAN.com 888-331-4569

CRAFTSMAN. CMHT77629 ! TYPE 1:3VDC Made in China SER. ≤1mW @630~680 nm IEC 60825-1:2014 Complies with 21CR 1040.0 and 1040.11 except for deviations pursuant to laser Notice No. 50, dated June 24, 2007. www.CRAFTSMAN.com 888-331-4569