Benning DUTEST pro Manual De Instrucciones página 6

Operating Manual
DUTEST
Before using the DUTEST
Please read the operating manual and absolutely
observe the safety instructions!
Table of contents
1. Safety instructions
2. Device description
3. Functional test
4. Continuity and diode test
5. External-voltage and polarity indication
6. Single-pole external conductor test (phase)
7. Cable break detector
8. LED torch
9. Battery replacement
10. Technical data
11. General maintenance
12. Environmental protection
1. Safety instructions
- During the tests, touch the device at the insulated
test probes 7 and 8 only and do not touch the
testing electrodes 6 !
- Check the device for correct functioning immedi-
ately before and after using it (see chapter 3)! Do
not use the device, if one or more indications are
not working or if it does not seem to be ready for
operation!
- If it is assumed that safe operation is no longer
possible, the device must be switched off immedi-
ately.
- Absolutely prevent the device from getting wet
and avoid any water condensation at the device.
Moreover, the device must be protected against
contamination and damaging!
- The device does not work with the battery being
exhausted!
- The device must be used within the stated nomi-
nal voltage range and in electrical installations of
up to 400 V AC/DC only!
- The device must be used only in electric circuits
of overvoltage category CAT III with max. 300 V
for phase-to-earth measurements. For measure-
ments within measuring category III, the protrud-
ing conductive part of a testing electrode 6 of
the measuring line must not be longer than 4 mm.
Before carrying out measurements within measur-
ing category III, the enclosed attachable protective
caps marked with CAT III must be pushed onto
the testing electrodes 6 for user protection pur-
poses.
- Please observe that work on live parts and elec-
trical components of all kinds is dangerous! Even
low voltages of 30 V AC and 60 V DC may be
dangerous to human life!
- Do not operate the device with the battery com-
partment being open.
- The device is designed for being used by qualified
electricians and under safe working conditions.
- Do not dismantle the device!
Attention!
Immediately before use, make absolutely sure that the
system part to be tested is free of voltage! For this pur-
pose, use a two-pole voltage tester.
Attention!
The device is provided with a high-power LED torch.
Do not look directly or indirectly via reflecting surfaces
into the LED beam. An LED beam might cause irrepa-
rable damage to your eyes.
06/ 2014

®
pro
®
pro continuity tester:
Symbols on the device:
Symbol


2. Device description
1 Yellow LED for continuity tests up to R ≤ 100 Ω to
200 Ω
2 Yellow LED for continuity tests up to R ≤ 1 kΩ
3 Yellow LED for continuity tests up to R ≤ 10 kΩ
4 Red (+) LED of the external-voltage indication
(lights up),
+ positive pole of the polarity indication (lights up),
 external conductor test (phase) and cable break
detector (flashes)
5 Red (-) LED of the external-voltage indication
(lights up),
- negative pole of the polarity indication (lights up)
6 Testing electrodes with attachable protective caps
7 (+) test probe (red)
8 (-) test probe (black)
9 Measuring line
 High-power LED torch
 Push-button
 Catch of the battery compartment cover
 Battery compartment cover with magnet, belt clip
and technical data
 Sensor of the cable break detector
3. Functional test
- Check the device for correct functioning immedi-
ately before and after using it!
- Press and hold the push-button  for approx. 5
seconds to check all LEDs, the LED torch and the
buzzer for correct functioning.
- Short-circuit the test probes 7 and 8 to test the
internal measuring circuit, the measuring lines
and the batteries. The buzzer must sound and the
LEDs 1 , 2 and 3 for continuity test must light
up.
- Please replace the batteries as soon as the LEDs
1 , 2 and 3 are flashing during the continuity
test.
- Test the LEDs 4 and 5 of the external-voltage
indication as well as the correct functioning of the
single-pole external conductor test (phase) 4 with
familiar voltage sources, e.g. with a 230 V socket.
- Do not use the device, if not all functions are
working properly!
4. Continuity and diode test
- The continuity and diode test must be carried out
on system parts which are free of voltage. If nec-
DUTEST pro
®

Meaning
Attention! Please observe documenta-
tion!
This symbol indicates that the informa-
tion provided in the operating manual
must be complied with in order to avoid
risks.
Direct and alternating voltage (DC/AC)
Earth (voltage to earth)
This symbol shows the orientation of the
batteries for inserting them with correct
polarity.
Warning! Potentially dangerous optical
radiation!
Do not look directly into the light beam!
Danger to your retina!
Attention! Magnets might affect the cor-
rect functioning of cardiac pacemakers
and implanted defibrillators. As a user of
such medical devices, keep a sufficient
distance to the magnet.
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