Ames Instruments 58447 Assembly instructions

Page 1For technical questions, please call 1-888-866-5797.Item 58447
Visit our website at: http://www.harborfreight.com
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. 21g
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©2021 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.

Page 2 For technical questions, please call 1-888-866-5797. Item 58447
Table of Contents
Safety ..........................................2
Specifications ..............................4
Setup ...........................................4
Operation.....................................5
Maintenance................................ 7
Warranty ......................................8
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
Safety Warnings and Precautions
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result
in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
1. Electrical shock can cause death
or injury! NEVER TOUCH exposed
conductors of electricity.
2. Inspect the Tester before use. In
addition to a general inspection,
look specifically for:
a. Pay special attention to the
insulation protecting the connectors.
b. Check the leads for exposed metal,
damaged insulation, and continuity.
c. Replace damaged test lead
immediately, before use.
3. Do not use the Tester if:
a. Either of the test leads are
damaged in any way.
b. Test leads are dirty.

Page 3For technical questions, please call 1-888-866-5797.Item 58447
SAFETYOPERATIONMAINTENANCE SETUP
c. Near any explosive
gasses or fumes.
d. Any abnormal operation is detected.
(If in doubt about the condition
of the Tester, have it serviced.)
4. Use caution when working near
voltages above 30 VAC rms, 42 VAC
peak, or 60 VDC. Voltages this high
present a risk of electric shock.
5. Hold the probes with fingers
behind guards.
6. Avoid electrical shock. Use extreme
caution when working near uninsulated
conductors or bus bars. Prevent body
contact with grounded surfaces such
as pipes, radiators, ranges, and cabinet
enclosures when testing voltages.
7. Observe work area conditions. Do
not test voltages in damp or wet
locations. Don’t expose to rain.
Keep work area clean and well lit.
8. Keep children away. Children must
never be allowed in the work area.
9. Stay alert. Watch what you are doing,
use common sense. Do not operate
any Tester when you are tired.
10. Do not operate Tester if under the
influence of alcohol or drugs. Read
warning labels on prescriptions to
determine if your judgment or reflexes
are impaired while taking drugs. If there
is any doubt, do not operate the Tester.
11. 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.
12. Do not test voltage on circuits
higher than rated capacity.
13. Store idle equipment. When not
in use, Testers must be stored in a
dry location to decrease exposure
to moisture. Lock up Testers and
keep out of reach of children.
14. Dress properly. Protective,
electrically nonconductive
clothes and nonskid footwear are
recommended when working.
15. Wear ANSI-approved safety
goggles during use.
16. Only use accessories intended
for use with this Tester.
17. The warnings, cautions, 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.
18. Avoid damaging Tester. Use only
as specified in this manual.
19. Do not switch between testing
modes with the Tester is in use.
20. Do not disassemble Tester; take
it to a qualified technician when
service or repair is required.
Incorrect reassembly may result
in a risk of electric shock or fire.
21. Have the Tester calibrated by a
qualified technician every year.
A Tester that is not calibrated yearly
may not yield accurate results.
SAVE THESE INSTRUCTIONS.

Page 4 For technical questions, please call 1-888-866-5797. Item 58447
SAFETY OPERATION MAINTENANCESETUP
Specifications
Max. Voltage 400V
AC/DC Voltage Ranges: ±12V / 24V / 50V /
120V / 230V /400V
AC/DC Voltage Accuracy 30%~0% of indication
Frequency Range 50/60 Hz
Response Time <0.1 s
Operating Temperature Range: 14°F - 131°F (-10°C - 55°C)
Operating Humidity <80% RH
Safety CAT III 400V (with Probe Caps on)
Setup - Before Use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
Functions
Black Test
Probe (-)
Probe Caps
Red Test
Probe (+)
Voltage Display
LEDs
Protection
Guard
GFCI Test
Button
Mode
Switch
Protection
Guard

Page 5For technical questions, please call 1-888-866-5797.Item 58447
SAFETYOPERATIONMAINTENANCE SETUP
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
Testing 120VAC Grounded 3-Prong Outlet
Electrical shock can cause death or injury! Do not touch
Probes while Tester in use. Hold Probes by insulated handles, behind Protection
Guards. If circuit fails any test, have it serviced by qualified electrician.
Note: The buzzer will sound if the
voltage is higher than 50V.
1. Set the Mode Switch to Audible.
2. Remove Probe Caps from Test Probes.
WARNING! TO PREVENT SERIOUS
INJURY: Removing Probe Caps
reduces safety to CAT II.
3. Test Voltage:
a. Put Black Probe in Neutral
receptacle first, then put Red
Probe into Hot receptacle.
b. 120 LED will light up if
voltage is present.
c. Remove Probes.
d. If LED does not light up, have circuit
serviced by qualified electrician.
4. Test Ground Path:
a. Put Black Probe into Ground
receptacle first, then put Red
Probe into Hot receptacle.
b. 120 LED will light up if
ground wire has a complete
path to breaker panel.
c. Remove Probes.
d. If 120 LED does not light
up, have circuit serviced
by qualified electrician.
5. Test Circuit:
a. Put Black Probe into Neutral
receptacle first, then put Red
Probe into Ground receptacle.
b. No LEDs should light up.
c. Remove Probes.
d. If LED lights up, have circuit
serviced by qualified electrician.
Neutral Hot
Ground

Page 6 For technical questions, please call 1-888-866-5797. Item 58447
SAFETY OPERATION MAINTENANCESETUP
Testing 12VDC Batteries
1. Set the Mode Switch to Audible.
2. Remove Probe Caps from Test Probes.
WARNING! TO PREVENT SERIOUS
INJURY: Removing Probe Caps
reduces safety to CAT II.
3. Put one Probe on each post of battery.
4. 12V LED should light up
if voltage is present.
Testing 120VAC GFCI Outlet
TO PREVENT SERIOUS INJURY: Electrical shock
can cause death or injury! Do not touch Probes while Tester in use.
Hold Probes by insulated handles, behind Protection Guards. If
circuit fails any test, have it serviced by qualified electrician.
1. Check instructions on the
specific GFCI device you are
testing before proceeding.
2. Set the Mode Switch to GFCI Test.
3. Remove Probe Caps from Test Probes.
WARNING! TO PREVENT SERIOUS
INJURY: Removing Probe Caps
reduces safety to CAT II.
4. Test GFCI Outlet:
a. Put Black Probe into Ground
receptacle first, then put Red
Probe into Hot receptacle.
b. 120 LED will light up if
voltage is present.
c. Press Test button, 120 LED will
go out. If 120 LED does not go
out, have GFCI Outlet replaced
by qualified electrician.
d. Press Reset button,
120 LED will light up.
e. Remove Probes.
RESET
TEST
Neutral Hot
Ground

Page 7For technical questions, please call 1-888-866-5797.Item 58447
SAFETYOPERATIONMAINTENANCE SETUP
Record Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Reference UPC 193175439222.
Maintenance and Servicing
Procedures not specifically explained in this manual
must be performed only by a qualified technician.
Cleaning, Maintenance, and Lubrication
1. Wipe unit with a dry, lint-free cloth.
Do not use solvents or abrasives.
2. Store unit in a dry location indoors
out of reach of children.
3. There are no replaceable parts
on this unit. Repairs should be
done by a qualified electrician.

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.
26541 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797
Table of contents
Other Ames Instruments Analytical Instrument manuals