Johnson 40-6646 Manuale utente

Self-Leveling 3 Dot Laser

Model No. 40-6646

Instruction Manual

Congratulations on your choice of this Self-Leveling 3 Dot Laser. We

suggest you read this instruction manual thoroughly before using the

instrument and save this instruction manual for future use.

This is a Class II laser tool and is manufactured to comply with CRF 21,

parts 1040.10 and 1040.11 as well as international safety rule IEC 285.

1836i-English_Manuals 3/15/17 11:36 AM Page 1

Table of Contents

1. Features and Functions

2. Safety Instructions

3. Location/Content

of Warning Labels

4. Location of Parts/Components

5. Operating Instructions

6. Accuracy Check Instructions

7. Application Examples

8. Troubleshooting Guide

9. Technical Specifications

10. Product Warranty

11. Warranty Registration

1. Features and Functions

• Simultaneously projects three laser beams (front, up and down)

to check plumb and level.

• agnetic dampening compensation system stabilizes pendulum

quickly and accurately, and stays level even with nearby

vibration on the job site.

• Visual out of level indicator alerts you to when the tool is beyond

its leveling range.

• Clearance for all common drywall track materials and 2x

dimensional lumber.

• Locking compensator helps protect the tool’s inner mechanisms.

• Dust resistant construction.

• Tripod thread for convenience.

1836i-English_Manuals 3/15/17 11:36 AM Page 2

2. Safety Instructions

Please read and understand all of the following instructions, prior

to using this tool. Failure to do so, may void the warranty.

DANGER!

Class II Laser Product

ax. Power Output: ≤1mW

Wavelength: 635nm

THIS TOOL EMITS LASER RADIATION.

DO NOT STARE INTO BEAM.

A OID DIRECT EYE EXPOSURE.

ATTENTION IMPORTANT

• Read all instructions prior to operating this laser tool. Do not remove any labels from tool.

• Do not stare directly at the laser beam.

• Do not project the laser beam directly into the eyes of others.

• Do not set up laser tool at eye level or operate the tool near a reflective surface as

the laser beam could be projected into your eyes or into the eyes of others.

• Do not place the laser tool in a manner that may cause someone to unintentionally

look into the laser beam. Serious eye injury may result.

• Do not operate the tool in explosive environments, i.e. in the presence of gases or

flammable liquids.

• Keep the laser tool out of the reach of children and other untrained persons.

• Do not attempt to view the laser beam through optical tools such as telescopes as

serious eye injury may result.

• Always turn the laser tool off when not in use or left unattended for a period of time.

• Remove the batteries when storing the tool for an extended time (more than 3 months)

to avoid damage to the tool should the batteries deteriorate.

• Do not attempt to repair or disassemble the laser tool. If unqualified persons attempt

to repair this tool, warranty will be void.

• Use only original Johnson®parts and accessories purchased from your Johnson®

authorized dealer. Use of non-Johnson®parts and accessories will void warranty.

1836i-English_Manuals 3/15/17 11:36 AM Page 3

3. Location/Content of Warning Labels

1836i-English_Manuals 3/15/17 11:36 AM Page 4

4. Location of Part/Components

Locking

Compensator/

Power Switch

Battery

Cover

Release

Status Light

1/4″-20 Tripod Thread

(underneath, not shown)

Laser

Output

Windows

1836i-English_Manuals 3/15/17 11:36 AM Page 5

5. Operating Instructions

IMPORTANT: It is the responsibility of the user to ensure proper

maintenance of the Self-Leveling 3 Dot Laser. Conduct periodic

test measurements to ensure the instrument is measuring

accurately and consistently. This is most important if the

instrument has been exposed to extreme temperatures or

moisture. Keep the Self-Leveling 3 Dot Laser optic lens clean and

inspect for damage.

Battery Installation

To install batteries in the Self-Leveling 3 Dot Laser:

1. Remove the battery cover, which is located at

the back of the tool, by pressing the battery

cover release found on the left and right side of

the tool and pulling the cover back.

2. Insert 2 “AA” batteries into the battery compart-

ment according to the polarity illustrated inside.

3. Replace the battery cover by seating the bottom door edge first,

then pivoting the battery cover up. Press in the release tabs to

clear the housing as the door closes.

Notes:

• Always check that the locking compensator/power switch is in the

locked position before removing and replacing batteries.

• Use only alkaline batteries.

• Remove the batteries when storing the instrument for an extended

time (more than 3 months) to avoid damage to the tool should the

batteries deteriorate.

1836i-English_Manuals 3/15/17 11:36 AM Page 6

Powering the Laser On/Off

Slide the locking compensator up to power on the unit and unlock

the compensator so that the laser can self-level. The status light

will illuminate, and the unit will emit three laser beams (up, front

and down).

Slide the locking compensator down to power off the unit and

engage the pendulum lock. The laser can be safely transported when

the pendulum is locked.

Note: The Self-Leveling 3 Dot Laser must be within ±5° of level for

the self-leveling feature to function properly. If the instrument is

beyond its 5° self-leveling range, the laser will not self-level, the

laser will be flashing and the status light will turn red. Once the

instrument has been adjusted to within its 5° self-leveling range, the

laser will self-level, the status light will turn green and the laser light

will stop flashing and remain solid on.

Tips from the Pros

• Increasing the Beams’ Visibility – When working in bright

conditions, such as when working near windows or outside walls,

the visibility of the laser beams can be maximized by following

these steps:

• Work towards the laser.

• Use a freestanding target (sold separately).

• Wear laser glasses (sold separately).

Note: Laser glasses enhance beam visibility but should never be

used to stare into the beam or be used as safety glasses. Eye

damage may result if these directions are not followed.

1836i-English_Manuals 3/15/17 11:36 AM Page 7

Care and Handling

• This Self-Leveling 3 Dot Laser is a precision tool that must be

handled with care.

• Avoid exposing unit to shock vibrations and extreme temperatures.

• Remove the batteries when storing the unit for an extended time

(more than 3 months) to avoid damage to the unit should the

batteries deteriorate.

• Avoid getting the unit wet.

• Keep the laser unit dry and clean, especially the laser output

window. Remove any moisture or dirt with a soft, dry cloth.

• Do not use harsh chemicals, strong detergents or cleaning

solvents to clean the unit.

1836i-English_Manuals 3/15/17 11:36 AM Page 8

6. Checking Accuracy

IMPORTANT: It is the responsibility of the user to verify the

calibration of the instrument before each use.

Checking Plumb Accuracy

1. Place the laser on a flat surface in as tall of a room as possible.

20′or higher is ideal. In shorter rooms, a mirror can also be used

on the ceiling to reflect the beam back to the ground to give a

longer effective distance.

2. Turn on the laser. ark the center of the plumb down beam as

Point O. ark the center of the plumb up beam as Point A.

3. Rotate the laser 90 degrees, aligning the plumb down beam with

Point O. ark the plumb up beam as Point B.

4. Rotate another 90 degrees and align the plumb down over Point

O. ark the plumb up as Point C.

5. Rotate another 90 degrees and align the plumb down over Point

O. ark the plumb up as Point D.

6. This will establish 4 points on the ceiling (A, B, C and D), that

should either perfectly superimpose or form a very small circle.

easure the diameter of this small circle. The laser is in tolerance

if the circle is equal to or smaller than:

• 3/64″for a 10′ceiling

• 3/32″for a 20′ceiling, or reflected by a mirror from a

10′ceiling.

• 1/16″for a 30′ceiling, or reflected by a mirror from a

20′ceiling.

1836i-English_Manuals 3/15/17 11:36 AM Page 9

Checking Level Accuracy

• Set the instrument on a level surface such as a tripod, located

between two walls (labeled Wall 1 and Wall 2), located a minimum

of 25′apart (see Fig 1). The laser should be as close as possible

to Wall 1.

• Point the instrument at Wall 1. Turn the laser

on, and mark the beam as Point A. Rotate the

instrument 180 degrees so the laser is pointed

at Wall 2. ark the beam on Wall 2 as Point B.

• ove the instrument and the tripod so the

laser is positioned as close as

possible to Wall 2 near Point B (see

Fig 2). Level the tripod and position the

instrument on the tripod facing Wall 2. Turn the

laser on, and mark the beam as Point C. Point C should be directly

above or below Point B.

• Turn the laser off and rotate the laser 180 degrees so that it is

facing directly to Wall 1.Turn on the laser, and mark the beam as

Point D. Point D should be directly above or below Point A.

• easure the vertical distance between Points A and D.

• easure the vertical distance between Points B and C.

• If the larger of the two differences measured above is less than

1/4″at 25′, your instrument is within tolerance.

Note: This accuracy checking method doubles the error. For example,

if the difference between Point A and Point D is 1/4″at 25′, your

laser is accurate to 1/8″at 25′.

Wall 1 Wall 2

Fig 1

Fig 2

1836i-English_Manuals 3/15/17 11:36 AM Page 10

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