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Just before they are used, voltage testers need to be
checked to ensure that they function correctly.
Perform the function test and check the instrument
at a known voltage source, e.g. a 230 V socket. If the
display of one or several systems fails in the course
of checking, then the device must not be used
again.
The maximum on-period of the MultiSafe DSP 4 is
2 minutes.
With determination of phase conductors and phase
sequence the perceptibility of the display may be
impaired, e.g. when using insulating protective ge-
ars, in unfavourable locations, for example on
wooden ladders or insulating floor coverings, as
well as with unfavourable lighting conditions and in
an improperly grounded a.c. voltage system.
The voltage tester may not be dismantled by
unauthorized personnel.
Voltage testers must be kept dry and clean.
3. Putting into operation
3.1 Battery
Your instrument is already supplied with a 9 V flat
cell batter in accordance with IEC 6 F 22 or 6 LR 61.
The battery status is indicated by a battery symbol
on the LCD (see section 8.1).
Attention!
Please observe chapter 8.1 before initial startup or
after your device has been in storage for a long time.
3.2 Testing correct display and function (Self-test)
In accordance to DIN VDE 0105 part 1 voltage te-
sters must be tested if they function correctly just
before it is used for determining zero-potential.
Step 1 – Test of the display
Press and hold button . All display segments
light up on the LCD, additionally, the Ω LED and
POL-LED light up as well as a buzzer sound can
be heard.
Release button , the value 0.00 ... 0.02 V is
indicated on the display.
Step 2 – Checking the line / function
Afterwards, actuate button Ω/V. OL and MΩ
appear on the display. Hold the test electrodes
together. The value 000 ... 002 kΩ appears on the
display. At the same time, an acoustic signal is ge-
nerated and the green LED “Ω“ lights up. Through
this, the overall functions have been tested.
Step 3 – Test of the LV indication
Check the function of the LV indication (50 V LED /
120 V LED) at a known voltage source, e.g. a 230 V
socket. At the same time, the determined voltage
value is indicated on the LCD.
Attention!
If one of the displays fails during the self-test – even
if only partial failure occurs – or if the instrument
does not indicate a function standby, the voltage
tester may not be placed into operation!
