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Benning MM6.2 Manual

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02/ 2016
BENNING MM 6-1/ 6-2
29
tivity).
- Connect the red safety measuring lead to the jack
J
for V of the
BENNING MM 6-1/ MM 6-2.
- Bring the safety measuring lead into contact with the measuring point of the
system part.
- If an acoustic signal is emitted and the red LED
N
lights, the phase of an
earthed alternating voltage is applied to this measuring point (system part).
9. Maintenance
Before opening the BENNING MM 6-1/ MM 6-2, ensure that it is
not connected to a source of voltage! Electrical hazard!
Any work required on the BENNING MM 6-1/ MM 6-2 when it is under voltage must
be done only by a qualified electrician. Special steps must be taken to prevent
accidents. Before opening the BENNING MM 6-1/ MM 6-2, remove it from all sources
of voltage as follows:
- First remove both safety measuring leads from the measurement points.
- Remove both safety measuring leads from the BENNING MM 6-1/ MM 6-2
- Turn the rotating switch
to “OFF”.
9.1 Securing the unit
Under certain circumstances, the safety of the BENNING MM 6-1/ MM 6-2 can
no longer be guaranteed. This may be the case if:
- there are visible signs of damage on the unit,
- errors occur in measurements,
-
the unit has been stored for a long period of time under the wrong conditions, and
- if the unit has been subjected to rough handling during transport.
In these cases, the BENNING MM 6-1/ MM 6-2 must be switched off immediately,
removed from the measuring points and secured to prevent it from being used again.
9.2 Cleaning
Clean the outside of the unit with a clean dry cloth. (Exception: any type of
special cleaning cloth). Never use solvents or abrasives to clean the testing unit.
Ensure that the battery compartment and the battery contacts have not been
contaminated by electrolyte leakage.
If any electrolyte or white deposits are seen near to the battery or in the battery
compartment, remove them with a dry cloth, too.
9.3 Battery replacement
Before opening the BENNING MM 6-1/ MM 6-2, ensure that it is
not connected to a source of voltage! Electrical hazard!
The BENNING MM 6-1/ MM 6-2 is supplied by means of one 9 V block battery.
Battery replacement (see figure 13) is required as soon as all segments of the
battery symbol
3
have disappeared and the battery symbol is flashing.
To replace the battery, proceed as follows:
- First remove the safety measuring leads from the measurement circuit.
- Remove the safety measuring leads from the BENNING MM 6-1/ MM 6-2.
- Turn the rotating switch
to “OFF”.
- Remove the protective rubber holster
M
from the BENNING MM 6-1/ MM 6-2.
- Lay the BENNING MM 6-1/ MM 6-2 on its front and loosen the screw from
the cover of the battery compartment.
- Lift off the battery compartment cover from the bottom part of the battery
compartment.
- Lift the discharged battery out of the battery compartment and remove the
battery leads carefully from the battery.
- Connect the new battery with the battery leads and arrange them in such a
way that they are not crushed between the two halves of the housing. Then
place the battery in the correct position in the battery compartment.
- Clip the battery cover onto the bottom part and tighten the screws.
- Replace the BENNING MM 6-1/ MM 6-2 in its protective rubber holster
M
.
See fig. 13: Battery replacement
Remember the environment! Do not dispose of used batteries
with domestic waste. Dispose of them at a battery-collection
point or as toxic waste. Your local authority will give you the
information you need.
… 29 …


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