Johnson 40-6174 Manuel utilisateur

Magnetic Torpedo Laser Level

Model No. 40-6174

Instruction Manual

Congratulations on your choice of this Magnetic Torpedo Laser Level.

We suggest you read this instruction manual thoroughly before using

the instrument. Save this instruction manual for future use.

This tool emits one laser beam that is selectable as a dot, vertical

line, or horizontal line. Visibility of the beam depends upon lighting

conditions in the work area.

This is a Class IIIa laser tool and is manufactured to comply

with CFR 21, parts 1040.10 and 1040.11 as well as international

safety rule IEC 285.

7920H-English_Manuals 3/21/14 9:35 AM Page 1

Table of Contents

1. Kit Contents

2. Features and Functions

3. Safety Instructions

4. ocation/Content

of Warning abels

5. ocation of Parts/Components

6. Operating Instructions

7. Using the Product

8. Self-Check & Fine Calibration

9. Technical Specifications

10. Application Demonstrations

11. Care and Handling

12. Product Warranty

13. Warranty Registration

14. Accessories

1. Kit Contents

Description for Model 40-6174 ty.

Magnetic Torpedo aser evel 1

“AA” Alkaline Batteries 2

eveling Base 1

Mounting Straps 2

Instruction Manual with Warranty Card 1

Soft-sided Carrying Case 1

2. Features and Functions

• Able to project laser dot.

• Able to project a horizontal laser line.

• Able to project a vertical laser line.

• The laser output mode is switchable between dot and line

for ease of use.

• Includes a convenient leveling base.

• Magnetic surface allows unit to be attached to metal.

• Includes straps for use when mounting to round, square or

irregular shaped objects. Slip straps through horizontal slots

below horizontal vial.

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3. 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 IIIa aser Product

Max. Power Output: ≤5mW

Wavelength: 640-660nm

THIS TOOL EMITS LASER RADIATION.

DO NOT STARE INTO BEAM.

AVOID 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.

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4. Location/Content of Warning Labels

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5. Location of Part/Components

eveling Base

Power

Switch

Vertical Vial

Mode

Conversion

Head

Rotating Head

Horizontal Vial

Battery Door

Cross Vial

Magnet

1/4" Screw

Thread hole

V-Shaped Base

eveling Screw

Attachment Bolt

Power

Switch

Battery Door

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6. Operating Instructions

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

calibration of the instrument before each use.

Battery Installation

Remove battery door by rotating it counter-

clockwise, and put in two alkaline “AA”

batteries according to the illustrated polarity

requirements, and then install the battery

door by rotating it clockwise.

Note: Used (discharged) batteries are hazardous waste and should be

disposed of properly.

Leveling Base Usage

1. Install the leveling base by screwing the

attachment bolt clockwise into 1/4" thread hole

at the bottom of the instrument.

2. evel the instrument by rotating two leveling screws.

7. Using the Product

Power On/Off

1. Press power switch to project laser line or dot.

2. Press power switch again to shut off laser output.

Switch Between Laser Dot and Laser Line

Turn the mode conversion knob to switch between laser line and

laser dot. Rotating the wedge lens up or down converts the laser

Battery

Battery Door

Power Switch

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from a dot to a line, or line to a dot. Rotating wedge

lens counter-clockwise, while in line mode, rotates

line from horizontal to vertical, or vice versa.

Note: The rotating head can be turned only in the

direction indicated by arrow sign.

8. Self-Check & Fine Calibration

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

calibration of the instrument before each use.

Checking Vials

Start by making sure that the vials are accurate. This is done by

placing the level on a flat surface and noting the position of the vial.

Rotate the level by 180 degrees (on the same gauging edge) and

observe that the bubble is in the same position.

Rotate to switch

between point

and line

Rotating Direction

Indication

Wedge lens

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Calibrating Vials

To access the calibration screws remove the stickers located to the

right and left of the vial at the top of the unit. First, adjust the

calibration screws to move the bubble back to center taking out half

of the error in the vial. Rotate the level 180° on the same gauging

edge and move the bubble to center. Repeat this process until the

error is entirely removed and the bubble stays in the center. Plumb

vial and 45° vial cannot be calibrated.

Checking Laser

Once the vials are accurate, laser accuracy can be verified (near tar-

get, far target method). Start by placing the unit on a flat surface and

aim the laser at a stationary target. Position the unit/target at close

range and note a reference point on the target. As the unit is moved

away from the target, such that alignment of the laser to the target is

fixed, and the only variable is distance, the accuracy of the laser can

be verified/calibrated.

Calibrating Laser

There are set screws on the side and bottom of the unit that provide

calibration for the laser.

For vertical calibration, use underside screws, tightening the front

screw to adjust up and tighten the rear to adjust down.

For horizontal calibration, use two screws on the side of the part

number and date code. Tighten the front screw to adjust right.

Tighten the back screw to adjust left.

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9. Technical Specifications

aser Wavelength 650nm ± 10

aser Classification Class IIIa

Maximum Power Output ≤5mW

Accuracy ± 1/8"/50 ft. (±1mm/5m) in the

horizontal direction of laser point

Interior Working Range Up to 100 ft. (30m) depending upon

light conditions

Power Supply 2 “AA” alkaline batteries (included)

Dimensions 7.37" x 2" x 1"

(188 x 51 x 25mm)

Weight 0.7 lbs. (0.3 kg)

Working Temperature 14°F to 113°F (-10°C to +45°C)

Center Screw Thread 1/4" – 20

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10. Application Demonstrations

Projects one laser point

Projects one horizontal laser line

Projects one vertical laser line

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