Maintenance; Securing The Device; Battery Replacement - Benning MM P3 Bedienungsanleitung

9.

Maintenance

Before opening the BENNING MM P3, make sure that the device is

free of voltage! Electrical danger!
Working on the opened BENNING MM P3 under voltage must be carried out by
skilled electricians only who must observe special precautions for the preven-
tion of accidents!
Therefore, make sure the BENNING MM P3 is free of voltage before opening the
device:
- First, remove both safety measuring lines from the object to be measured.
- Switch the rotary switch 7 to position „OFF".

9.1 Securing the device

Under certain circumstances, safe operation of the BENNING MM P3 might no longer
be ensured, e.g. in case of:
- visible damages of the housing and safety measuring lines,
- incorrect measuring results,
- recognizable consequences of prolonged storage under inadmissible conditions
and
- recognizable consequences of extraordinary stress due to transport.
In such cases, immediately switch off the BENNING MM P3, disconnect it from the
measuring points and secure it against further use.
9.2 Cleaning
Clean the exterior of the device with a clean dry cloth (exception: special cleaning
wipers). Do not use any solvents and/or abrasives to clean the device. Make sure that
the battery compartment and the battery contacts are not contaminated by leaking
battery electrolyte.
If there are electrolyte contamination or white deposits in the area of the battery or the
battery housing, clean these areas as well by means of a dry cloth.

9.3 Battery replacement

Before opening the BENNING MM P3, make sure that the device is

free of voltage! Electrical danger!
The BENNING MM P3 is supplid by means of two integrated 1.5 V batteries (LR44).
Battery replacement (see figure 9) is required, if the battery symbol  appears on
the display .
Proceed as follows to replace the battery:
- Disconnect the safety measuring lines from the measuring circuit.
- Switch the rotary switch 7 to position „OFF".
- Put the BENNING MM P3 face down and unscrew the screw of the bottom part
of the housing.
- Carefully lift off the bottom part of the housing.
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BENNING MM P3
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