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Idiomas disponibles
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9.1 Securing the unit
Under certain circumstances, the safety of the BENNING MM 4 can no longer
be guaranteed. This may be the case if:
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there are visible signs of damage on the unit,
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errors occur in measurements,
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the unit has been stored for a long period of time under the wrong condi-
tions, and
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if the unit has been subjected to rough handling during transport.
In these cases, the BENNING MM 4 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 BENNING
MM4. Always 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 4, ensure that it is not
connected to a source of voltage! Electrical hazard!
The BENNING MM 4 is supplied by two 1.5 volt batteries. The batteries must be
changed (see Fig. 8) when the battery symbol appears in the display 3.
To replace the battery, proceed as follows:
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Disconnect the black safety test lead and the red test probe from the cir-
cuit.
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Disconnect the black safety test lead and the red test probe from the
BENNING MM 4.
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Lay the BENNING MM 4 on its front and release the screw in the base of
the housing.
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Lift the housing base at the socket end and remove it from the front part
close to the digital display 3.
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Remove the discharged batteries from the battery holder.
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Insert two fresh batteries correctly into the battery holder. Check polarity.
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Push the housing base back onto the front part and replace the screw.
See fig. 8:
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.
9.4 Calibration
To achieve the desired degree of accuracy in your measurement readings, the
unit must be calibrated regularly by our field service. We recommend calibrating
your Multimeter once per year. Send the appliance to the following address:
Benning Elektrotechnik & Elektronik GmbH & CO. KG
Service Centre
Robert-Bosch-Str. 20
D - 46397 Bocholt
10. Technical data of the measuring accessories
4 mm Safety measuring cable ATL 2
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Standard: EN 61010-031,
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Maximum rated voltage to earth ( ) and measuring category: 1000 V
CAT III, 600 V CAT IV,
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Maximum rated current: 10 A,
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Protective class II ( ), continuous double or reinforced insulation,
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Contamination class: 2,
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Length: 1.4 m, AWG 18,
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Environmental conditions:
Maximum barometric elevation for making measurements: 2000 m,
Temperatures: 0 °C to + 50 °C, humidity 50 % to 80 %
-
Only use the measuring cables if in perfect condition and according to this
manual, since the protection provided could otherwise be impaired.
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Throw the measuring cable out if the insulation is damaged or if there is a
break in the cable/ plug.
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Do not touch the bare contact tips of the measuring cable. Only grab the
area appropriate for hands!
11/ 2008
Battery replacement
BENNING MM 4
15
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