JOHNSON Rotary Laser 40-6535/40-6541 User Guide
- June 6, 2024
- Johnson
Table of Contents
Quick Start Guide: Rotary Laser 40-6535 · 40-6541
Thank you for purchasing this high-accuracy dual-slope horizontal rotary
laser. This laser is ideal for critical level measurements, where accuracy
can’t be compromised.
This tool features:
- Class IIIa long-range laser
- Dual-slope for grading
- Tilt indicator
- Remote control
Typical Applications Include:
- Setting and leveling concrete formwork
- Grading
- Concrete flatwork
BUTTON GUIDE
Most functions of this laser are accessed via the remote control – this minimizes disturbances to the laser during operation. The power and tilt indicator buttons can be accessed from the laser.
GETTING STARTED
- Insert batteries into the laser and the remote control.
- Most functions of the laser require a remote control for operation. Note: The laser will stop receiving remote signals after 30 minutes of inactivity. Press on the laser to re-enable communication with the remote.
- Tap to power on the laser. The laser will self-level and rotate. The laser will flash if out of its self-leveling range. If this occurs, bring the laser within 5° of level and restart it.
- Tap to disable or enable the tilt indicator. See the Tilt Indicator section for more information.
- To power off the laser, tap . The laser will turn off and enter sleep mode for 30 minutes. It can be woken with the remote control or the laser keypad. After 30 minutes, it will fully power down and stop receiving remote control signals in order to conserve the battery.
TILT INDICATOR
The tilt indicator disables the laser if it’s bumped while operating,
preventing you from taking inaccurate measurements.
To enable the tilt indicator:
- With the laser-powered on, press .
- The Tilt Mode LED will flash for 30 seconds. During this time, the laser will automatically re-level and restart if bumped. This gives you time to make any final adjustments to the laser height.
- After 30 seconds, the Tilt Mode LED will remain on, indicating Tilt Mode is active. Any disturbance to the laser will cause it to stop spinning and flash to alert you.
- Reset the laser after a tilt event or exit tilt mode by pressing .
For a video quick start guide, scan the QR code to the right:
DUAL-AXIS SLOPE MODE
Dual-axis slope mode angles the laser beam in either X, Y, or both axes, for
example sloping a concrete slab towards an edge or corner.
When in dual-slope mode, the tilt indicator can not be used. Ensure the laser
is not bumped while operating in dual-slope mode.
If desired, you can slope only one axis in dual-slope mode – the other axis
will remain fixed level, but if the laser is moved, it will not automatically
re-level.
To enter dual-slope mode:
- Tap on the remote to start dual-slope mode.
- The X-axis indicator will blink. Use and adjust the slope on the X-axis. Tap for minor adjustments, or press and hold for larger adjustments.
- Tap on the remote to toggle axes and set the slope in the Y direction. The Y-axis indicator will blink. Use and adjust the slope in the Y-axis.
- If the laser exceeds its slope range, the rotation will stop, the laser will flash, and the alarm will sound. If this happens, reduce the slope in either axis until the laser resumes operation.
- Exit dual-slope mode by holding for 3 seconds. The laser will self-level and begin to spin horizontally. Pro Tip: To set a specific slope, use a detector and grade rod. For
Pro Tip: To set a specific slope, use a detector and grade rod. For example to set 1” per 10’ slope:
- Level the laser, and let it spin in horizontal mode.
- Mark a point 10’ from the rotary, orthogonal to the desired axis.
- Fine grade with a grade rod. Lower the detector 1”.
- Adjust laser slope until the detector reads “on-grade”.
- Set detector height so that it reads “on-grade” when positioned immediately next to the rotary.
- Don’t make any additional detector height adjustments – The bottom of the grade rod will always read the proper ground level at all locations, consistent with a 1:120 or 1”/10’ slope.
USING A LASER DETECTOR
Laser detectors help you locate the laser beam when you otherwise can’t see it
with your naked eyes, such as in outdoor conditions, high ambient light, and
long distances.
Models 40-6535 and 40-6541 both come with Johnson’s dual-sided laser detector
model 40-6715. These models are also compatible with Johnson’s 40-6791 machine
mount detector for mounting to skid steers, excavators, and other similar
equipment.
40-6715 DETECTOR OPERATION GUIDE
- Power on the detector by pressing .
- Adjust the sound level and backlight using and .
- Press to set the accuracy. Higher accuracy makes for more accurate laser readings, lower accuracy makes it quicker to locate the beam when accuracy is less critical (as in rough excavation).
- With the detector window facing the rotary laser, move the detector up and down until it crosses the laser beam. It will begin to beep when it locates the beam.
- Use the arrow on the LCD as a guide – to find grade, move the detector in the direction indicated by the arrow.
- When the arrow turns into a solid line, and the beeping turns into a solid tone, you have located grade.
We want to get you up and running as quickly as possible – but this quick start guide is not a replacement for reading and understanding your operator’s manual! For complete safety & operating instructions, refer to the operator’s manual included with your rotary laser, or scan the QR code.