This document is an instruction manual for the Johnson Self-Leveling Cross-Line Laser, covering models 40-6601, 40-6603, 40-6605, and 40-6609. It provides comprehensive information on the device's features, operation, safety, and maintenance.
Function Description:
The Johnson Self-Leveling Cross-Line Laser is a versatile tool designed to project two laser beams simultaneously, both horizontally (level) and vertically (plumb). This capability makes it suitable for a wide range of applications requiring precise alignment and leveling. The device incorporates a magnetically dampened compensator system, which ensures quick and accurate stabilization of the pendulum, maintaining level even in environments with nearby jobsite vibration. It also features a "Tilt Mode" (Manual Level Mode) that allows users to project laser lines at any desired angle, which is particularly useful for tasks like plotting lines for stairs or railings. A status light alerts the user if the laser is beyond its self-leveling range, turning red when out of range and green when level. For protection during transportation, the laser includes a locking mechanism that secures the pendulum. The tool is equipped with a 1/4"-20 tripod thread, making it compatible with most common tripods for stable positioning.
Important Technical Specifications:
- Laser Wavelength:
- 635 nm (for models 40-6603 & 40-6605 - Red Laser)
- 520 nm (for models 40-6601 & 40-6609 - Green Laser)
- Laser Classification: Class II
- Maximum Power Output: ≤1mW
- Self-Leveling Range: ±4°
- Laser Accuracy: ±3/16″/30′
- Measuring Range: 0' - 50'
- Power Supply: 2 "AA" alkaline batteries (included)
- Battery Life (reported with all beams enabled, as tested with lithium AA/Alkaline AA):
- 36 hours/20 hours (40-6603 & 40-6605)
- 16 hours/9 hours (40-6601 & 40-6609)
- Operating Temperature Range: 32°F - 104°F
- Storage Temperature Range: 0°F - 120°F
- Dimensions: 3" x 3" x 2.37"
- Weight: 0.53 lbs
- Tripod Thread: 1/4" - 20
- IP Rating: IP 50
Usage Features:
The laser offers two primary operating modes:
- Self-Leveling Mode: To activate, slide the locking compensator up to the unlocked position. The status light will illuminate, and two laser beams (horizontal and vertical) will be emitted. If the tool is beyond its ±4° self-leveling range, the laser will flash, and the status light will turn red. Once adjusted within range, the status light turns green, and the laser beams become solid. To power off, slide the locking compensator down to the locked position.
- Tilt (Manual Level) Mode: With the locking compensator in the locked position, press the tilt mode button to power on the unit. The status light will illuminate in red, indicating that the tool is not self-leveling. Two perpendicular laser beams will be emitted, but they will not self-level. This mode is ideal for projecting lines at custom angles, such as for stair railings. Best results are achieved when the tool is mounted on a tripod in this mode. Press the tilt mode button again to power off.
The manual also provides "Tips from the Pros" for increasing beam visibility in bright conditions, including working towards the laser, using a freestanding target (included with some models), and wearing laser glasses (included with some models). It's crucial to note that laser glasses enhance visibility but are not safety glasses and should never be used to stare into the beam.
Maintenance Features:
Proper maintenance is essential for the longevity and accuracy of the Self-Leveling Cross-Line Laser.
- Battery Installation: The device uses 2 "AA" alkaline batteries. To install, press the battery cover release tabs on the left and right sides of the tool and pull the cover out. Insert batteries according to polarity and replace the cover, pressing the release tabs as it's inserted. Always ensure the locking compensator/power switch is in the locked position before changing batteries.
- Battery Storage: Remove batteries when storing the tool for extended periods (more than 3 months) to prevent damage from battery deterioration.
- Cleaning: Keep the laser unit dry and clean, especially the laser output window. Use a soft, dry cloth to remove any moisture or dirt. Avoid using harsh chemicals, strong detergents, or cleaning solvents.
- Handling: This is a precision tool and should be handled with care. Avoid exposing the unit to shock vibrations and extreme temperatures. Do not get the unit wet.
- Calibration Verification: Users are responsible for conducting periodic test measurements to ensure the tool's accuracy, especially if it has been exposed to extreme temperatures or moisture. The manual provides detailed instructions for checking plumb accuracy, horizontal line transverse accuracy, and horizontal pitch accuracy.
- Repairs: Do not attempt to repair or disassemble the laser tool. Unauthorized repairs will void the warranty. Use only original Johnson® parts and accessories from authorized dealers; non-Johnson® parts will void the warranty.
Safety Instructions:
The manual emphasizes critical safety precautions:
- Read all instructions before operating.
- Do not remove any labels from the tool.
- Do not stare directly into the laser beam.
- Do not project the laser beam directly into the eyes of others.
- Do not set up the laser tool at eye level or operate it near reflective surfaces.
- Do not place the tool in a manner that may cause unintentional eye exposure.
- Do not operate in explosive environments.
- Keep the laser tool out of reach of children and untrained persons.
- Do not attempt to view the laser beam through optical tools like telescopes.
- Always turn the laser tool off when not in use or left unattended.
The device is a Class II laser product, complying with CRF 21, parts 1040.10 and 1040.11, and international safety rule IEC 285. Warning labels on the device itself provide specific laser radiation cautions for both 635nm (red laser) and 520nm (green laser) models.
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