Centech 61839 Assembly instructions

ITEM 61839
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Email our technical support at: [email protected]
ITEM 61839
REV 14e
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2014 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Important Safety Information
Work Area Safety
1. Keep your work area clean and well lit.
Cluttered benches and dark
areas may cause accidents.
2. Operate the Camera in a
well-ventilated work area.
3. Do not operate the Camera in explosive
atmospheres, such as in the presence of
flammable liquids, gases, or heavy dust.
4. Keep a fire extinguisher suitable for
gasoline/chemical/electrical fires nearby.
5. Keep bystanders, children and visitors
away while operating the Camera.
6. This product is not a toy. Do not allow
children to play with or near this item.
7. Use as intended only.
8. Inspect before every use; do not use
if parts are loose or damaged.
9. Maintain product labels and
nameplates. These carry
important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
Electrical Safety
1. Before inspecting walls, shut off the
circuit breakers to the whole house.
2. Before inspecting pipes that may
contain an electric charge, have them
checked by a qualified electrician.
3. Before inspecting an engine,
turn off the automobile.
4. Do not use the Camera
while standing in water.
5. Avoid body contact with grounded
surfaces such as pipes, radiators,
ranges and refrigerators.
6. Do not expose the Handheld Display
Unit to rain or wet conditions.
Water entering the Handheld
Display Unit will increase the
risk of electric shock.
7. Do not place the Imager Head
and Cable into any place that may
contain a live electric charge or
moving parts, which increases
the risk of electric shock.
8. Make sure your hands are dry
before operating the Camera
or charging the battery.

Page 3For technical questions, please call 1-888-866-5797.Item 61839
Camera Safety
1. The Handheld Display Unit is not
waterproof. The Imager Head and
Cable are rated to IP67.
See “Specifications” on page 4.
2. Do not use the Camera if condensation
forms in the Imager Head.
Let condensation evaporate before use.
3. Do not submerge the Imager
Head and Cable into corrosive
substances, such as drain cleaner.
4. Do not get gasoline or oil on the
Imager Head and Cable.
5. Do not use excessive force to insert or
withdraw the Imager Head and Cable.
6. Do not use the Camera near
moving machinery.
7. Do not place the Camera on
any unstable cart or surface.
8. Handle the Camera with care. If
the Camera is dropped, check for
breakage and any other conditions
that may affect its operation.
9. Store the Camera, cables and
accessories in a locked area
out of the reach of children.
Personal Safety
1. Wear ANSI-approved safety
goggles during use.
2. Do not wear loose clothing or jewelry.
Keep your hair, clothing, and
gloves away from moving parts.
Loose clothes, jewelry, or long hair
can be caught in moving parts.
3. Do not use the Camera while tired or
under the influence of drugs, alcohol, or
medications. A moment of interruption
can result in serious personal injury.
4. Do not over-reach. Keep proper footing
and balance at all times. Proper footing
and balance enables better control of
the Camera in unexpected situations.
5. Do not use the Camera for personal
inspection or medical use in any
way. This is not a medical camera.
6. WARNING: Handling the cord
on this product will expose you
to lead, a chemical known to
the State of California to cause
cancer, and birth defects or other
reproductive harm. Wash hands
after handling. (California Health &
Safety Code § 25249.5, et seq.)
7. People with pacemakers should
consult their physician(s) before
use. Electromagnetic fields in close
proximity to heart pacemaker could
cause pacemaker interference
or pacemaker failure.
8. The warnings, precautions, and
instructions discussed in this instruction
manual cannot cover all possible
conditions and situations that may
occur. It must be understood by the
operator that common sense and
caution are factors which cannot
be built into this product, but must
be supplied by the operator.
Service
There are no user serviceable parts. Camera service must
be performed only by qualified repair personnel.

Page 4 For technical questions, please call 1-888-866-5797. Item 61839
Specifications
Battery Type 4 x AA 1.5V Alkaline (sold separately)
Display Screen 2.4" TFT LCD (320 x 240)
Handheld Display Unit
Operating Temperature 32°F to 113°F
Imager Head 8.5mm (0.3")
Imager Head Lights 4 x Adjustable LED
Image Sensor 1/6" VGA CMOS
Imager Head Ingress
Protection Rating
IP67 - Protected against the effect of
immersion between 15cm and 1m
Imager Head and Cable
Operating Temperature 14°F to 176°F
Video Output RCA Cable

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This device complies with Part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

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Setup- Before Use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this document including all text under subheadings therein
before set up or use.
Components
Hook
Mirror Magnet
Display
Screen
Cable
Imager
Head with
Light
RCA
Cable
Cable
Connector
Handheld
Display
Unit
RCA
Video Out
Port
Figure A

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Installing Batteries
CAUTION: Position batteries in
proper polarity and do not install
batteries of different types, charge
levels, or capacities together.
The battery compartment is located
on the bottom of the handle.
1. Slide the Battery Cover off, remove
the battery case, insert four AA
batteries (not included).
2. Slide the battery case back in and
replace the Battery Cover.
Figure B: Battery Cover
Tool Set Up
TO PREVENT SERIOUS INJURY FROM ELECTRICAL SHOCK:
Make sure that the Camera is OFF before performing any procedure in this section.
1. Connecting Cable:
a. Carefully push Cable’s key
into Cable Connector’s slot.
b. Turn Cable Connector
counterclockwise until the
Cable and Cable Connector
are securely attached.
2. Disconnecting Cable:
a. Turn Cable Connector clockwise
until the Cable and Cable
Connector are detached.
b. Remove Cable.
Cable
Key
Slot
Cable
Connector
Figure C
3. Attaching Accessories:
a. Hold the accessory against
the Imager Head, placing
the Hook in the hole.
b. Match the slot on the Sleeve
to the accessory, then slide the
Sleeve down the Imager Head
until it covers the Hook.
Imager
Head
Accessory
Sleeve
Hook
Figure D
4. Connecting to External
Monitor with RCA Cable:
Plug one end into the RCA Video Out
Port on Camera, then plug other end
into RCA Video In Port on monitor.

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Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this document including all text under subheadings therein
before set up or use of this product.
TO PREVENT SERIOUS INJURY AND DEATH:
Always wear eye protection. Wear ANSI-approved safety goggles during use.
Before inspecting walls, shut off the circuit breakers to the whole house.
Before inspecting pipes that may contain an electric charge, have them checked by a
qualified electrician.
Before inspecting an engine, turn off the automobile.
Handheld Display Unit Controls
Power
Dim
Light
Brighten
Light
Flip
Image
Figure E

Page 9For technical questions, please call 1-888-866-5797.Item 61839
General Operating Instructions
Live Viewing
View on Display Screen or use RCA cable to view on external monitor.
1. Press the Power button to
turn the Camera on.
2. Adjusting Light: Press Left
button to dim and turn off light.
Press Right button to turn on
light and increase brightness.
3. Flip Image: Press the
Flip Image button to flip
image horizontally and vertically.
4. When finished, press the Power button
to turn the Camera off, then clean
and store according to “Inspection
and Maintenance” on page 10.

Page 10 For technical questions, please call 1-888-866-5797. Item 61839
Inspection and Maintenance
Procedures not specifically explained in this manual
must be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ELECTRICAL SHOCK:
Make sure that the Camera is OFF before performing any procedure in this section.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
Inspection
1. BEFORE EACH USE, inspect the
general condition of the tool. Check for:
• condensation in Imager Head,
• cracked or damaged Cable,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
Cleaning and Storage
1. AFTER USE, use a mild detergent
on a clean cloth to remove any oil,
grease or dirt from the Camera,
especially on the buttons and ports,
being careful to not put excessive
pressure on the Display Screen.
2. Remove batteries before storage.
3. Store the Camera, cables and
accessories in a locked area
out of the reach of children.
Troubleshooting
Problem Possible Causes Likely Solutions
Display is on, but does
not show image.
1. Cable connection loose.
2. Imager Head is dirty.
1. Check that cable is connected.
2. Clean Imager Head.
1. Light is dim at
maximum brightness.
2. Display turns itself off.
3. Camera will
not turn on.
Low Batteries. Replace Batteries.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.

Page 11For technical questions, please call 1-888-866-5797.Item 61839
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST IN
THIS DOCUMENT AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND
TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE
PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE
PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN
BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS
TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING
OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
Parts List
Part Description Qty
1 Handheld Display Unit 1
2 Cable with 8.5mm Imager Head 1
3 RCA Cable 1
4 45°Mirror Accessory 1
5Hook Accessory 1
6Magnet Accessory 1
7 Storage Case 1
Record Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.

Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase.
This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence
or accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation
charges prepaid. Proof of purchase date and an explanation of the complaint must accompany
the merchandise. If our inspection verifies the defect, we will either repair or replace
the product at our election or we may elect to refund the purchase price if we cannot readily
and quickly provide you with a replacement. We will return repaired products at our expense,
but if we determine there is no defect, or that the defect resulted from causes not within
the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797