STANLEY STHT77498-1 Self Leveling Cross Line Laser User Manual

: June 3, 2024
: Stanley

Table of Contents

STANLEY STHT77498-1 Self Leveling Cross Line Laser
Contents
User Safety
Personal Safety
Battery Safety
Installing AA Batteries
Turning the Laser On
- Checking Laser Accuracy
Using the Laser
- Operating Tips
Maintenance **
Troubleshooting
Service and Repairs
Warranty
Specifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

STANLEY STHT77498-1 Self Leveling Cross Line Laser

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 STANLEY® tool, go to http://www.STANLEY.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:
Hazardous Radiation. 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.

Volts
Milliwatts
Laser Warning
Wavelength in nanometers
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.

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 Stanley service center go to http://www.2helpU.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.

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 STHT77498-1 or STHT77499-1 laser.

Turn the laser upside down.
On the bottom of the laser, lift up the latch to open the battery compartment cover (Figure B 1 ).
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 ).
Push the battery compartment cover closed until it snaps in place (Figure B 3 ).

Turning the Laser On

Place the laser on a smooth, flat, level surface, with the laser facing straight ahead toward the opposing wall (0º position).
Turn the laser ON to display the horizontal and vertical laser beams. Either:
- 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 ).
- 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 ).
Check the horizontal and vertical laser beams.
- 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.
- 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.
If ANY of the following statements are TRUE, continue with the instructions for Checking Laser Accuracy BEFORE USING THE LASER for
a project.
- This is the first time you are using the laser (in case the laser was exposed to extreme temperatures).
- The laser has not been checked for accuracy in a while.
- 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.

Place the back of the laser against a wall and facing straight ahead toward the opposing wall (Figure D 1 ).
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.
Turn the laser 45º counter-clockwise so that the right-most end of the laser line is displayed on the wall.
Mark a on the center of the beam on the wall.
Turn the laser 90º clockwise so that the left-most end of the laser line is displayed near a (Figure D 2 ).
Mark b on the center of the beam on the wall.
Measure the vertical distance between a and b .
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.

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.

Place the laser against the end of the wall (Figure E 1 ).
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.
At least 30′ (9m) apart along the laser beam, mark a and b .
Move the laser to the opposite end of the wall (Figure E 2 ).
Position the laser toward the first end of the same wall and parallel to the adjacent wall.
Adjust the height of the laser so the center of the beam is aligned with b .
Directly above or below a , mark c along the laser beam (Figure E 3 ).
Measure the distance between a and c .
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.

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.

On the floor between two walls, mark a 5 ft. (1.5 m) line that is parallel to the adjacent wall (Figure F 1 ).
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.
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.
Where the vertical laser beam appears on the ceiling, mark a . (This should be directly over the midpoint of the line on the floor.)
Move the laser to the other end of the line on the floor (Figure F 2 ).
Where the vertical laser beam appears on the ceiling, mark b , directly beside the first mark a .
Measure the distance between a and b .
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.

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, ceiling grid, or pole.

Securely attach the laser to the bracket.
- Using the 1/4-20 thread on the bottom, side, or back of the laser (Figure C ), position the laser on the 1/4-20 thread on the bracket arm (Figure G 1 ).
If needed, change the height or position of the laser on the bracket.
- Turn the adjustment knob (Figure G 3 ) counter-clockwise to loosen the bracket arm.
- Slide the bracket arm up or down to the desired height (Figure G 4 ). To change the bracket from 90° to 180°, slide the bracket arm to the top of the bracket and then flip the arm to the right (Figure G 5 ).
- Turn the adjustment knob (Figure G 3 ) clockwise to lock the bracket arm in place.
Use the bracket’s clamp (Figure G 6 ) to hold the laser in place on a stud, ceiling grid, or pole.
- If necessary, rotate the clamp so it is positioned at the correct angle for attaching to the object. While holding the bracket arm with one hand, use your other hand to turn the clamp (Figure G 7 ).

Using the Laser with Other Accessories
WARNING:
Since accessories other than those offered by STANLEY have not been tested with this laser, use of such accessories with this laser could be hazardous. Only use STANLEY® 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, side, and back (Figure C ) to accommodate current or future STANLEY® 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 STANLEY service center or visit our website:
http://www.STANLEY.com.

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 ˚F (-20 ˚C) or above 140 ˚F (60 ˚C).
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 STANLEY 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.
If the laser unit is heated above 120 ˚F (50 ˚C), the unit will not turn ON. 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.

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 STANLEY service center, go to http://www.STANLEY.com.

Warranty

Two Year Warranty
Stanley warrants its electronic measuring tools against deficiencies in materials and / or workmanship for two years from date of purchase.
Deficient products will be repaired or replaced, at Stanley’s option, if sent together with proof of purchase to:

Stanley UK Sales Limited
Gowerton Road
Brackmills, Northampton NN4 7BW
This Warranty does not cover deficiencies caused by accidental damage, wear and tear, use other than in accordance with the manufacturer’s instructions or repair or alteration of this product not authorised by Stanley.
Repair or replacement under this Warranty does not affect the expiry date of the Warranty.
To the extent permitted by law, Stanley shall not be liable under this Warranty for indirect or consequential loss resulting from deficiencies in this product.
This Warranty may not be varied without the authorisation of Stanley.
This Warranty does not affect the statutory rights of consumer purchasers of this product.
This Warranty shall be governed by and construed in accordance with the laws of the country sold where in and Stanley and the purchaser each irrevocably agrees to submit to the exclusive jurisdiction of the courts of that country over any claim or matter arising under or in connection with this Warranty. Calibration and care are not covered by warranty.
NOTE:
The customer is responsible for the correct use and care of the instrument. Moreover, the customer is completely responsible for periodically checking the accuracy of the laser unit, and therefore for the calibration of the instrument.

Specifications

| STHT77498-1| STHT77499-1
---|---|---
Light Source| Laser diodes
Laser Wavelength| 630 – 680 nm visible| 510 – 530 nm visible
Laser Power| ≤1.5 mW CLASS 2 LASER PRODUCT
Working Range| 12m (36′)| 16m (53′)
Accuracy| ±6 mm @ 10m (±1/4″” @ 33′)
Power Source| 2 AA (1.5V) size batteries (3V DC)
Operating Temperature| -10°C to 40°C (14°F to 104°F)
Storage Temperature| -20°C to 60°C (-5°F to 140°F)