Benning MM 8, Operating Manual

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9

9.3­ Battery­change
 Before­opening­the­BENNING­MM­8/­9/­0­make­quite­sure­that that­
it­is­voltage­free!­Electrical danger! Electrical­danger!
The BENNING MM 8 is supplied by two 1.5-V micro batteries, the
BENNING MM 9/ 10 is supplied by a fitted 9 V block battery.
A battery change (­see Figure 11) is required, if in the display

the battery
symbol

appears.
Proceed as follows to replace the batteries:
- Disconnect the safety measuring cables from the measuring circuit.
- Disconnect the two safety measuring cables from the
BENNING MM 8/ 9/ 10.
- Turn the rotary switch

to the switch setting ”OFF”.
- Remove the rubber protection frame M from the BENNING MM 8/ 9/ 10.
- Lay the BENNING MM 8/ 9/ 10 face down and release the two slot screws
of the battery compartment cover.
- Lift the battery compartment lid (­in the housing recess area) from the bottom
section.
- Lift the discharged battery/ batteries from the battery compartment and
carefully disconnect the battery supply lines (­BENNING MM 9/ 10) from the
battery.
- The new batteries have to be connected to the battery supply lines, and
arrange these such that they are not crushed between the housing parts
(­BENNING MM 9/ 10). Place the battery/batteries into the battery compart-
ment provided for this purpose.
- Place the battery compartment cover onto the bottom part and tighten the
screws.
- Insert the BENNING MM 8/ 9/ 10 into the rubber protection frame

.
see figure 11: Battery change

Make­ your­ contribution­ to­ environmental­ protection!­ Do­ not­
dispose­ of­ discharged­ batteries­ in the household garbage. in­ the­ household­ garbage.­
Instead,­ take­ them­ to­ a­ collecting­ point­ for­ discharged­
batteries­ and­ special­ waste­ material.­ Please­ inform­ yourself yourself­
in­your­community.
9.4­ Fuse­replacement­ (­BENNING MM 9/ 10)

Before­opening­the­BENNING­MM­9/­0­make­quite­sure­that it that­it­
is­voltage­free!­Electrical danger! Electrical­danger!
The BENNING MM 9/ 10 is protected against overload conditions by means of
a fitted fuse (­G melt insert) 10 A (­see Figure 12)
Proceed as follows to replace the fuse:
- Disconnect the safety measuring cables from the measuring circuit.
- Disconnect the safety measuring cables from the BENNING MM 9/10/.
- Turn the rotary switch

to the switch setting ”OFF”.
- Remove the rubber protection frame

from the BENNING MM 9/ 10.
- Lay the BENNING MM 9/ 10 face down and release the four slot screws of
the housing bottom.

Do­ not­ undo­ any­ screws­ on­ the­ printed­ circuit­ of­ the­­
­BENNING­MM­9/­0!
- Lift up the housing bottom in the lower section and remove the same at the
top from the front section.
- Lift one end of the defective fuse from the fuse holder.
- Fully push the defective fuse out of the fuse holder.
- Insert a new fuse which has the same current rating, disconnecting charac-
teristic and dimensions.
- Make sure that the new fuse is seated centred in the holder.
- Order the battery supply lines such that they are not crushed between the
housing parts.
- Engage the front end on the housing bottom and fit the three screws.
- Insert the BENNING MM 9/ 10 into the rubber protection frame

.
see figure 12: Fuse replacement
11/ 2006 ­BENNING­MM­8/­9/­10­