UT593/595 OPERATING MANUAL UT593/595 OPERATING MANUAL
Mark on the instrument indicates that for safe operation of this instrument, users shall operate
the instrument according to the relevant content in this manual.
1. Danger: To avoid possible serious or fatal damages caused under some status and operations.
2. Warning: To avoid the danger of electric shock.
3. Notice: To avoid damages to the instruments and to conduct accurate measurement.
Danger
Do not measure the circuits with voltage above AC 440 V/ DC 440V.
Do not conduct test at combustible place for sparks may cause explosion.
Do not operate this instrument if the surface of the instrument is wet or operator's hands are wet.
In measuring, do not touch the conductive part of test pen.
Do not open the battery cover in measurement.
Do not touch the circuit to be tested in conducting insulation measurement and electric leakage
protector measurement.
Warning
In case of any abnormality, stop using it. For example: The instrument is damaged or metal part
is exposed.
Be careful when working under the voltage exceeding 33Vrms, 46.7Vacrms or 70 Vdc. This
kind of voltage may cause electric shock.
After high resistance measurement, electric charges stored in the circuits to be test shall be
released.
Do not change the battery when the instrument is under wet conditions.
Ensure all test wires are firmly connected to test ports of the instrument.
Ensure the instrument shuts down when you open the battery cover.
Notice
Before resistance measurement, the circuits to be tested must be totally discharged and shall be
completely isolated from the power supply circuits.
If the test pen is damaged and is needed to be replaced, you must replace it with the one of the
same model and electrical specification.
When the battery indicator ( ) shows that electric energy is used up, do not use the instrument.
If you do not use the instrument for a long time, take the battery out for storage.
Do not store or operate this instrument in high temperature, high humidity, inflammable and
explosive conditions and strong electromagnetic field.
Clean the shell of the instrument with wet cloth or cleaning agent rather than abrasive objects or
solvent.
When the instrument is wet, make it dry before storage.
II. DEFINITION OF SYMBOLS
Danger of possible electric shock
Double insulation or reinforced insulation
DC
AC
Grounding
Design and production is made in strict accordance with IEC 61010 safety standard. It complies
with and passes voltage safety standard (CAT 300V) and pollution class standard.
Automatic voltage discharge function.
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