Benning DUTEST Manuel De Instrucciones página 6

Instruction manual
Before you use the continuity and circuit tester
DUTEST : Please read the instruction man u al and
®
make sure that you follow the safety in struc tions!
Index of contents:
1. Safety instructions
2. Mode of operation
3. Operating check/ commissioning
4. How to test an electrically conductive circuit
(continuity test)
4.1 How to test the continuity and reverse direc-
tion of semiconductors
5. Pocket torch function
6. Lamp replacement
7. Technical data
8. General maintenance
9. Environmental notice
1. Safety instructions
On the unit there are shown international electrical
sym bols with the following meanings:
�
Attention, read documentation!
�
Direct- or alternative current (DC/ AC).
Continuous double or strengthened isolation
�
(pro tection II, IEC 60536).
- This unit is built and tested in accordance with DIN
VDE 0403/ DIN VDE 0411- / EN 61010 part 1 and
supplied in a sound condition. In order to main tain
this condition and to ensure a safe opera tion, the
user has to follow the instructions and warnings
which are included in this instruc tion manual.
- This unit is provided for the use in accordance
with IEC 60664, category II. It is suitable for the
use in circuits up to 400 V
- The unit must only be used for the continuity
tes ting of electrical wiring, networks, systems,
equipment, components up to a nominal voltage
of 400 V
se miconductors.
Max voltage from earth 300 V
- Handle the instrument only by the insulated grips
� and do not touch the test probes �!
- A continuity and semiconductor test must not be
per formed on live equipment.
- Before opening the battery cover �, the test grips
must be disconnected from all voltage sources
and measuring circuits.
The battery compartment cover underneath the
unit can be opened (by a 5,5 mm screwdriver).
To do this put the screwdriver in the slot at the
small side and remove the cover by a slight rotary
mo tion. Always insert the batteries with the correct
poles!
If the unit is not used for a long time, re move the
batteries from the unit!
Do not throw away used batteries, dispose these
as toxic waste!
- Please note that working on live circuits and
systems is always dangerous. Voltages from 30 V
AC and 60 V DC can be extremely dangerous to
the human body.
- Avoid getting the instrument wet or moist. It is al so
important to keep the continuity tester
clean!
- Avoid the development of water condensation.
This occurs if the unit is brought from the cold
into a warm environment. This can cause the in su-
la ting strength to be reduced inside the unit and
errors in measurement can arise. If this happens,
the unit has to be kept for approx. 1 hour at a hig-
her temperature in a suitable place.
- If it is assumed that safe operation is no longer
pos sible, the unit has to be switched off and secu-
red against unintentional use.
It has to be assumed that a safe operation is no
lon ger possible,
- if the unit shows visible damages (housing,
ca ble, test grips),
- if the function of one or several displays fails
or the unit fails to function correctly,
- after long storage in unfavourable conditions,
- after stress due to transportation.
- For cleaning the unit use a cloth moistened with a
small amount of washing-up liquid. If battery elec-
trolyte has run out, thoroughly clean battery com-
partment and contacts!
dutest_heft.indd 5
�
DUTEST
®
.
�
and for the polarity determination of
�
!
�
Attention:
Immediately before use, ensure that the equipment is
not live! Please use a two-pole voltage tester for this
check, not the Dutest.
2. Mode of operation
The Dutest is a continuity and circuit tester in
ac cordance with VDE 0403, with visual and acoustic
test indication. The unit is designed for continuity tes -
ting of electrical wiring, networks, systems, equip ment
and components up to a measuring resistor value of
90 k�. With this unit the polarity of semi conductor
components such as diodes, transistors, etc. can be
determined.
For operation 3 Mignon-batteries 1,5 V (IEC/ DIN R6/
LR6) are needed.
The unit has a visual indication with two LEDs � and
� and an acoustic indication by means of a test buz-
zer.
The unit has two test leads � attached.
Each test grips � has an uninsulated test electrode
(test probe) � with a hole for the connection of single
wires up to 2,5 mm² � .
Different crocodile clips can be used on the test elec-
tro des (test probes) �. The diameter of the test elec-
trodes is 4 mm. Via a switch � the unit can also be
operated as pocket torch.
Visual and acoustic indication
In the display window there is a torch reflector with a
bulb � on the right and two circular light lenses with
LEDs � and � on the left. The LED indications are
marked with the symbols "�" and "k�" and signal the
respective testing range. A test buzzer, which is inte-
grated in the unit, serves for the acoustic indication.
3. Operating check/ commissioning
- The unit may be only used for continuity testing
of dead electrical wiring, networks, systems, equip-
ment and components as well as for po la ri ty deter-
mination of semiconductor components!
- Before the commissioning of the unit, 3 Mignon-
batteries 1,5 V (IEC/ DIN R6/ LR6) have to be put
into the battery compartment. The battery com-
partment is behind the housing cover at the rear of
the unit. The housing cover has an opening slot at
both housing sides of the unit and can be opened
with a tool e. g. screwdriver.
- When putting in the 3 Mignon-batteries, pay atten-
tion to the correct polarity!
- Check the internal voltage supply of the tester and
with it the function of the LED-indications and the
test buzzer by touching together the two test elec-
trodes �.
- Do not use the continuity tester unless all func-
tions are operating correctly!
4. How to test the continuity and reverse
di rection of semicondutors (continuity test)
- The continuity test must not be performed on live
equipment, if necessary, capacitors have to be
discharged.
- The necessary test potential is provided by the 3
Mignon-batteries 1,5 V, which are integral in the
unit.
- Testing is possible in the range from 0 - 90 k�.
- Connect the test grips � with test electrodes �
to the equipment to be tested.
- By contacting the test electrodes � to an elec tri-
cal ly conductive circuit, the LEDs � and � light
up and the test buzzer sounds in case of a mea-
suring resistor < 900 �. In case of a mea suring
resistor > 900 �, only the LED � lights up and the
test buzzer sounds.
For easy connecting the hole � can additionally be
used. It is suitable for the connection of single wires
up to 2,5 mm².
4.1 How to test the continuity and reverse direc-
tion of semiconductors
- The polarity-dependent test must not be per formed
on live equipment.
- The necessary test potential is provided by the 3
Mig non-batteries 1,5 V, which are integrated in the
unit.
The red test grip � is the 'positive pole'.
The black test grip � is the 'negative pole'.
- Testing is possible in the range from 0 - 90 k�.
- Connect test grips � with test electrodes � to the
equipment to be tested.
- By contacting the test electrodes � to a semi con-
ductor, the LEDs � and � light up and the test
buzzer sounds if the circuit is made and in case
of a measuring resistor < 900 �. In case of a
measuring resistor > 900 � to 90 k�, only the LED
� lights up and the test buzzer sounds if the cir-
cuit is made. In case of reverse direction no in di ca-
tion is made!
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