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For technical questions, please call 1-888-866-5797.

Item 64021

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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.  Remove battery if not in 

use for long periods.

3.  Store unit in a dry location.

4.  Other than the battery and fuses, 

there are no replaceable parts 
in this unit.  

repairs should be 

done by a qualified technician.

Battery/Fuse replacement

If the   sign appears on the Display, 
the battery should be replaced.

1.  Remove Test Leads from the Meter.

2.  Power off Meter and turn it over.

3.  Remove screw(s).  Remove tilt 

stand and battery cover.

4.  Replace 

Battery

.

a.  Remove battery from the 

battery compartment.

b.  Replace battery with the 

same type and rating.

note:

  Do not reverse the 

polarity of the battery.

5.  Replace 

Fuse(s)

.

a.  Remove screw(s) from case bottom 

and separate case top from bottom.

b.  Carefully remove fuses one at a 

time.  Gently pry one end loose 
and remove from its bracket.  

Make note of its rating

.

c.  Replace with new fuse of the 

same type and rating.

6.  Rejoin the tilt stand, battery 

cover and case bottom.  
Reinstall and tighten screw(s).

calibration

Have the Meter calibrated by a qualified technician every year.

Summary of Contents for 64021

Page 1: ...ence 18k 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 2018 by Harbor Freight Tools All...

Page 2: ...sed 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 resul...

Page 3: ...the Meter have it serviced before use f The battery cover is open 5 Power this Meter using only the battery ies referenced in the Specifications Chart 6 Use caution when working near voltages above 3...

Page 4: ...ter may vary depending on battery condition 24 Use the proper settings terminals techniques and range for the tests performed Start with the range stated in the instructions 25 Do not apply voltage to...

Page 5: ...nt Accuracy 600 A 6000 A 1 2 of rdg 5D 60mA 600mA 1 5 of rdg 5D 6A 10A 2 0 of rdg 5D Resistance Ranges 600 6k 60k 600k 6M 60M Resistance Accuracy 600 1 2 of rdg 2D 6k 600k 1 0 of rdg 2D 6M 1 2 of rdg...

Page 6: ...ing of this manual including all text under subheadings therein before set up or use of this product Functions Milli Micro amp temperature input Jack common input Jack capacitance Volts Ohms Frequency...

Page 7: ...selection mode Continuity Diode test rEL Relative measurement mode MaX The maximum value is being measured Min The minimum value is being measured Battery low Percent Duty cycle c F Celsius Fahrenheit...

Page 8: ...aX Min Button The MaX Min Button allows you to record temporarily store and view signal events as you monitor them You may record while in any range or mode except Hz frequency duty cycle 1 Press the...

Page 9: ...ote The Hold mode will not capture unstable or noisy readings 4 To turn on the Display s backlight hold down the HOLD LiGHt Button for about 2 seconds 5 The backlight will automatically turn off after...

Page 10: ...Plug red test lead into V Hz input Jack 2 Turn Rotary Switch to the V Hz or mV Hz position as appropriate 3 Press Blue Button to choose AC or DC voltage 4 Carefully touch exposed conductors with tips...

Page 11: ...modes resistance Measurement Measure resistance up to 60M Ohms WarninG to prevent electric shock turn off all power and fully discharge capacitors in the circuit under test before measuring note When...

Page 12: ...store with Meter note If Test Leads are open or the resistance is out of range OL is displayed The buzzer does not sound if the resistance is greater than 100 Diode Measurement Test voltage drop in di...

Page 13: ...fore measuring 1 Plug black test lead into cOM Jack Plug red test lead into V Hz input Jack 2 Turn the Rotary Switch to the position 3 Press Blue Button until nF is displayed 4 Press the rEL button to...

Page 14: ...he circuit and allow capacitors to discharge 4 Press Blue Button to select AC or DC current The Meter default is DC current measurement 5 Break the circuit and connect the Test Leads in series with th...

Page 15: ...cement If the sign appears on the Display the battery should be replaced 1 Remove Test Leads from the Meter 2 Power off Meter and turn it over 3 Remove screw s Remove tilt stand and battery cover 4 Re...

Page 16: ...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...

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