10/ 2004
BENNING MM 5
17
- Remove the discharged batteries from the battery holder.
- Insert the new batteries into the holder. Ensure that they are correctly
connected. Arrange the battery leads in such a way that they are not
crushed between the housing parts.
- Clip the battery cover onto the bottom part and tighten the screw.
- Replace the BENNING MM 5 in its protective rubber holster
.
See fig. 10:
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.
9.4 Fuse replacement
Before opening the BENNING MM 5, disconnect it from the
power supply! Electrical hazard!
The BENNING MM 5 is protected from overloading by two integrated melt fuses
(1 A rapid acting and 10 A rapid acting) (see fig. 11)
To replace the fuses, proceed as follows:
- Disconnect the safety test leads from the measurement circuit.
- Disconnect the safety test leads from the BENNING MM 5.
- Turn the rotating switch
to the “OFF” position.
- Remove the protective rubber holster
from the BENNING MM 5
- Lay the BENNING MM 5 on its front and loosen the screw from the cover of
the battery compartment.
- Lift the battery-compartment cover (at recesses in housing) off the bottom
part
Do not loosen any of the screws on the printed circuit of the
BENNING MM 5!
- Remove the two outer screws (black) and the two screws beside the printed
circuit from the base of the housing.
- Lift the housing base at the bottom and remove it from the top of the front
part.
- Lift one end of the defective fuse out of the fuse holder.
- Push the defective fuse out of the fuse holder completely.
- Replace the defective fuse with another of the same rated power, same
triggering characteristics and same dimensions.
- Push the new fuse into the centre of the holder.
- Arrange the battery leads in such a way that they are not crushed between
the housing parts.
- Clip the housing base into the front part and replace the four screws.
- Clip the battery cover onto the bottom part and tighten the screw.
- Replace the BENNING MM 5 in its protective rubber holster
.
See fig. 11:
Fuse replacement
9.5 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 testing unit once per year.
10. How to use the protective rubber holster
- The safety test leads can be stored by coiling them round the protective
rubber holster
and clipping the probe into the holster so that they are
sufficiently protected (see fig. 12)
- You can clip one lead onto the protective rubber holster
in such a way
that the measuring probe projects. This allows you to bring the measuring
probe and the BENNING MM 5 up to the measuring point together.
- The support at the back of the holster can be used to prop the BENNING MM 5
up in a diagonal position (to make reading easier) or suspend it (see fig. 13).
- The protective rubber holster
has an eyelet for suspending the unit in a
convenient position.
See fig. 12:
Wrapping up the safety test leads
See fig. 13:
Standing up the BENNING MM 5
