Craftsman 82339 User manual

Owner's Manual
Digital MultiMeter
Model No.
82339
Sears, Roebuck and Co., Hoffman Estates, IL 60179
www.craftsman.com 061906
•Safety
•Operation
•Maintenance
•Español
CAUTION: Read, understand and
follow Safety Rules and Operating
Instructions in this manual before
using this product.

2
TABLE OF CONTENTS
Page
Warranty 3
Safety Instructions 4
Safety Symbols 5
Control and Jacks 6
Symbols and Annunciators 6
Specifications 7
Battery Installation 9
Operating Instructions 10
Data Hold 10
Backlight 10
Range Indicator 10
Input Shutters 10
DC Voltage Measurements 11
AC Voltage Measurements 11
DC Current Measurements 12
AC Current Measurements 12
Resistance Measurements 13
Continuity Check 13
Diode Test 14
Capacitance Measurements 14
Maintenance 15
Replacing the Battery 15
Replacing the Fuses 16
Troubleshooting 17
Service and Parts 17

3
ONE YEAR FULL WARRANTY
ONE YEAR FULL WARRANTY ON CRAFTSMAN MANUAL RANGING
MULTIMETER
If this CRAFTSMAN Manual Ranging MultiMeter fails to give complete
satisfaction within one year from the date of purchase, RETURN IT TO
THE NEAREST SEARS STORE OR OTHER CRAFTSMAN OUTLET IN
THE UNITED STATES, and Sears will replace it, free of charge.
If this CRAFTSMAN Manual Ranging MultiMeter is used for commercial
or rental purposes, this warranty applies for 90 days from the date of
purchase.
This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
For Customer Assistance Call 9am-5 PM (EST)
Monday through Friday 1-888-326-1006
WARNING: USE EXTREME CAUTION IN THE USE OF THIS DEVICE.
Improper use of this device can result in injury or death. Follow all
safeguards suggested in this manual in addition to the normal safety
precautions used in working with electrical circuits. DO NOT service this
device if you are not qualified to do so.

4
SAFETY INSTRUCTIONS
This meter has been designed for safe use, but must be operated with
caution. The rules listed below must be carefully followed for safe operation.
1. NEVER apply voltage or current to the meter that exceeds the
specified maximum:
Input Limits
Function Maximum Input
V DC 200mV range 250V DC or AC
V DC/V AC >200mV ranges 1000V DC or 700V AC
mA DC/AC 200mA DC/AC
10A DC/AC 10A DC/AC
Resistance, Capacitance,
Diode test, Continuity
250V DC/AC
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack
exceeds 1000V above earth ground.
4. NEVER connect the meter leads across a voltage source while the
function switch is in the current, resistance, or diode mode. Doing so
can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect
the power when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before
opening the doors to replace the fuse or battery.
7. NEVER operate the meter unless the back cover and the battery and
fuse doors are in place and fastened securely.

5
SAFETY SYMBOLS
This symbol adjacent to another symbol, terminal or
operating device indicates that the operator must refer
to an explanation in the Operating Instructions to avoid
personal injury or damage to the meter.
This WARNING symbol indicates a potentially
hazardous situation, which if not avoided, could result
in death or serious injury.
This CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may result
damage to the product.
This symbol advises the user that the terminal(s) so
marked must not be connected to a circuit point at
which the voltage with respect to earth ground
exceeds (in this case) 1000 VAC or VDC.
This symbol adjacent to one or more terminals
identifies them as being associated with ranges that
may, in normal use, be subjected to particularly
hazardous voltages. For maximum safety, the meter
and its test leads should not be handled when these
terminals are energized.
Double Insulation
WARNING
CAUTION
MAX
1000V

6
1
2
3
4
5
6
7
8
9
CONTROLS AND JACKS
1. 2000 count Liquid Crystal Display
2. Power switch
3. Function Switch
4. mA current input jack
5. 10A current input jack
6. Backlight pushbutton.
7. Data Hold pushbutton
8. Voltage, resistance and capacitance
positive input jack
9. Common negative input jack
SYMBOLS AND ANNUNCIATORS
Continuity
Low Battery
Diode
HData Hold
AC Alternating Current or Voltage
DC Direct Current or Voltage
mV, V millivolt, volt (voltage)
!!k!! M! ohm, kilohm, megohm (resistance)
mA, A milliamp, Amp (current)
nF, uF nanofarads, microfarads (capacitance)

7
SPECIFICATIONS
Function Range Resolution Accuracy
200mV 0.1mV !(0.5% reading + 1 digit)
2V 1mV
20V 10mV
200V 100mV
!(0.5% reading + 3 digits)
DC Voltage
(V DC)
1000V 1V !(0.8% reading + 3 digits)
200mV 0.1mV !(1.2% reading + 5 digit)
2V 1mV
20V 10mV
200V 100mV
!(1.0% reading + 5 digits
AC Voltage
(V AC)
(50/60Hz)
700V 1V !(1.2% reading + 5 digits
2mA 1"A
20mA 10"A !(1.0% reading + 3 digits)
200mA 100"A !(1.5% reading + 5 digits)
DC Current
(A DC)
10A 10mA !(2.0% reading + 10 digits)
2mA 1"A !(1.2% reading + 5 digits)
200mA 100"A !(2.0% reading + 5 digits)
AC Current
(A AC)
(50/60Hz) 10A 10mA !(3.0% reading + 10 digits)
200!0.1!!(1.0% reading + 10 digits)
2k!1!
20k!10!
200k!100!
2M!1k!
!(1.0% reading + 1 digit)
20M!10k!!(1.0% reading + 5 digits)
Resistance
200M!100k!!(5% reading -10/+20 digits)
2nF 1pF
20nF 10pF
200nF 0.1nF
2!F 1nF
Capacitance
20"F 10nF
!(4.0% reading + 3 digits)

8
SPECIFICATIONS
NOTE: Accuracy specifications consist of two elements:
•(% reading) – This is the accuracy of the measurement circuit.
•(+ digits) – This is the accuracy of the analog to digital converter.
NOTE: Accuracy is stated at 64oF to 82oF (18oC to 28oC) and less than
75% RH ambient MultiMeter conditions.
Diode Test Test current of approximately 1mA, open
circuit voltage 2.8V DC typical
Continuity Check Audible signal will sound if the resistance is
less than approximately 70!, open circuit
voltage 2.8V DC typical
Input Impedance 10M!(VDC and VAC)
Display 2000 count LCD
Overrange indication “1” is displayed
Polarity Automatic (no indication for positive polarity);
Minus (-) sign for negative polarity.
Measurement Rate 0.4 seconds, nominal
Low Battery Indication “ ” is displayed if battery voltage drops
below operating voltage
Battery Requires one 9V NEDA 1604 or 6F22 battery
(sold separately)
Fuses mA range, 200mA/250V fast blow
10A range, 10A/250V fast blow

9
SPECIFICATIONS
Operating Temperature 32oF to 104oF (0oC to 40oC)
Storage Temperature 10oF to 122oF (-10oC to 50oC)
Relative Humidity <70% operating
Operating Altitude 2000 meters (7000ft.) maximum.
Operating Humidity Max 70% up to 87ºF (31ºC) decreasing linearly
to 50% at 122ºF (50ºC)
Weight 12.34oz. (350g).
Size 7.52” x 3.23” x 1.42” (191mm x 82mm x 36mm)
Safety For indoor use and in accordance with
Overvoltage Category II, Pollution Degree 2.
Category II includes local level, appliance,
portable equipment, etc., with transient
overvoltages less than Overvoltage Category
III.
BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test leads from any
source of voltage before removing the battery door.
1. Disconnect the test leads from the meter.
2. Open the battery door by lifting the rear stand and removing the two
screws using a Phillips head screwdriver.
3. Insert the battery into battery holder, observing the correct polarity.
4. Put the battery door back in place. Secure with the two screws.
WARNING: To avoid electric shock, do not operate the meter until the
battery door is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and battery to
make sure that they are still good and that they are properly
inserted.

10
OPERATING INSTRUCTIONS
WARNING: Risk of electrocution. High-voltage circuits, both AC and DC,
are very dangerous and should be measured with great care.
1. ALWAYS press the POWER switch to the OFF position when the meter
is not in use.
2. If “1” appears in the display during a measurement, the value exceeds
the range you have selected. Change to a higher range.
NOTE: On some low AC and DC voltage ranges, with the test leads not
connected to a device, the display may show a random, changing
reading. This is normal and is caused by the high-input sensitivity.
The reading will stabilize and give a proper measurement when
connected to a circuit.
DATA HOLD
The Data Hold function allows the meter to "freeze" a measurement for
later reference.
1. Press the DATA HOLD button to “freeze” the reading on the indicator.
The indicator “ H“ will be appear in the display.
2. Press the DATA HOLD button to return to normal operation.
BACKLIGHT
The backlight function illuminates the display to improve readability in dimly
lighted areas.
1. Press the “ “ button to turn the backlight on.
2. In order to conserve power, the backlight will automatically turn off after
5 seconds.
RANGE INDICATOR
The number below the decimal point in the LCD display indicates the full
scale value of the range selected by the function switch.
INPUT SHUTTERS
The yellow input shutters either block or open the input jacks to insure
proper test lead connections for the measurement function selected.

11
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur that can
damage the meter.
1. Set the function switch to the highest V DC position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (V) jack.
3. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
4. Read the voltage in the display. Reset the function switch to
successively lower V DC positions to obtain a higher resolution reading.
The display will indicate the proper decimal point and value. If the
polarity is reversed, the display will show (-) minus before the value.
AC VOLTAGE MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240V outlets for
appliances because the contacts are recessed deep in the outlets. As
a result, the reading may show 0 volts when the outlet actually has
voltage on it. Make sure the probe tips are touching the metal contacts
inside the outlet before assuming that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur that can
damage the meter.
1. Set the function switch to the highest V AC position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert red test lead banana plug into the positive (V) jack.
3. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
4. Read the voltage in the display. Reset the function switch to
successively lower V AC positions to obtain a higher resolution reading.
The display will indicate the proper decimal point and value.

12
DC CURRENT MEASUREMENTS
1. Insert the black test lead banana plug into the negative (COM) jack.
2. For current measurements up to 200mA DC, set the function switch to
the highest DC mA position and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 10A DC, set the function switch to the
10A range and insert the red test lead banana plug into the (10A) jack.
4. Remove power from the circuit under test, then open up the circuit at
the point where you wish to measure current.
5. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
6. Apply power to the circuit.
7. Read the current in the display. For mA DC measurements, reset the
function switch to successively lower mA DC positions to obtain a
higher resolution reading. The display will indicate the proper decimal
point and value.
AC CURRENT MEASUREMENTS
WARNING: To avoid electric shock, do not measure AC current on
any circuit whose voltage exceeds 250V AC.
1. Insert the black test lead banana plug into the negative (COM) jack.
2. For current measurements up to 200mA AC, set the function switch to
the highest AC mA position and insert the red test lead banana plug
into the (mA) jack.
3. For current measurements up to 10A AC, set the function switch to the
10A range and insert the red test lead banana plug into the (10A) jack.
4. Remove power from the circuit under test, then open up the circuit at
the point where you wish to measure current.
5. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
6. Apply power to the circuit.
7. Read the current in the display. For mA AC measurements, reset the
function switch to successively lower mA AC positions to obtain a
higher resolution reading. The display will indicate the proper decimal
point and value.

13
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any resistance
measurements. Remove the batteries and unplug the line cords.
1. Set the function switch to the highest !!position.
2. Insert the black test lead banana plug into the negative (COM) jack
Insert the red test lead banana plug into the positive !jack.
3. Touch the test probe tips across the circuit or part under test. It is best
to disconnect one side of the part under test so the rest of the circuit
will not interfere with the resistance reading.
4. Read the resistance in the display and then set the function switch to
the lowest !position that is greater than the actual or any anticipated
resistance. The display will indicate the proper decimal point and value.
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on
circuits or wires that have voltage on them.
1. Set the function switch to the position.
2. Insert the black lead banana plug into the negative (COM) jack
Insert the red test lead banana plug into the positive (!) jack.
3. Touch the test probe tips to the circuit or wire you wish to check.
4. If the resistance is less than approximately 70!, the audible signal will
sound. If the circuit is open, the display will indicate “1”.

14
DIODE TEST
WARNING: To avoid electric shock, do not test any diode that has
voltage on it.
1. Set the function switch to position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (V) jack.
3. Touch the test probe tips to the diode or semiconductor junction you
wish to test. Note the meter reading.
4. Reverse the probe polarity by switching probe position. Note this
reading.
5. The diode or junction can be evaluated as follows:
A. If one reading shows a value and the other reading shows “1”, the
diode is good.
B. If both readings show “1”, the device is open.
C. If both readings are very small or 0, the device is shorted.
NOTE: The value indicated in the display during the diode check is the
forward voltage.
CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any capacitance
measurements. Remove the batteries and unplug the line cords.
1. Set the function switch to the highest CAP position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (CAP) jack.
3. Touch the test leads to the capacitor to be tested.
4. Read the capacitance in the display and then set the function switch to
the lowest CAP position that is greater than the actual or any
anticipated capacitance. The display will indicate the proper decimal
point and value.

15
MAINTENANCE
WARNING: To avoid electric shock, disconnect the test leads from any
source of voltage before removing the back cover or the battery or fuse
doors.
WARNING: To avoid electric shock, do not operate your meter until the
battery and fuse doors are in place and fastened securely.
This MultiMeter is designed to provide years of dependable service, if the
following care instructions are performed:
1. KEEP THE METER DRY. If it gets wet, wipe it off.
2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
Temperature extremes can shorten the life of the electronic parts and
distort or melt plastic parts.
3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it can
damage the electronic parts or the case.
4. KEEP THE METER CLEAN. Wipe the case occasionally with a damp
cloth. DO NOT use chemicals, cleaning solvents, or detergents.
5. USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE
AND TYPE. Remove old or weak batteries so they do not leak and
damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME,
the batteries should be removed to prevent damage to the unit.
REPLACING THE BATTERY
WARNING: To avoid electric shock, disconnect the test leads from any
source of voltage before removing the battery door.
1. When the battery become exhausted or drops below the operating
voltage, “ ” will appear in the LCD display. The battery should be
replaced.
2. Follow instructions for installing the battery. See the Battery Installation
section of this manual.
3. Dispose of the old battery properly.

16
WARNING: To avoid electric shock, do not operate your meter until the
battery door is in place and fastened securely.
REPLACING THE FUSES
WARNING: To avoid electric shock, disconnect the test leads from any
source of voltage before removing the fuse door.
1. Disconnect the test leads from the meter and any item under test.
2. Remove the protective holster and then remove the three screws and
lift off the back cover.
3. Remove the old fuse from its holder by gently pulling it out.
4. Install the new fuse into the holder.
5. Always use a fuse of the proper size and value.
6. Replace the rear cover and secure it with the three screws.
WARNING: To avoid electric shock, do not operate your meter until the
fuse door is in place and fastened securely.
UL LISTED
The UL mark does not indicate that this product has been evaluated for the
accuracy of its readings.

17
TROUBLESHOOTING
There may be times when your meter does not operate properly. Here are
some common problems that you may have and some easy solutions to
them.
Meter Does Not Operate:
1. Always read all the instructions in this manual before use.
2. Check to be sure the battery is properly installed.
3. Check to be sure the battery is good.
4. If the battery is good and the meter still does not operate, check to be
sure that both ends of the fuse are properly installed.
If You Do Not Understand How the Meter Works:
1. Purchase the instructional book “Multitesters and Their Use for Electrical
Testing” (Item No. 82303) at your local Sears store.
2. Call our Customer Service Line 1-888-326-1006.
SERVICE AND PARTS
Item Number Description
82375 Fuse kit
93894 9V Battery
82378 Set of black and red Test Leads
82339-DB Replacement battery door
82339-CS Rear cover screws
For replacement parts shipped directly to your home
Call 9 am – 5 pm eastern, M - F
1-888-326-1006