Benning CM 8 Operating Manual page 29

the BENNING CM 8.
- Connect the temperature measuring adapter to the COM jack J and to the
jack for V, Ω 9 observing correct polarity.
- Connect the temperature sensor (type K) to the adapter.
- Place the contact point (end of the sensor line) at the point to be measured.
Read the measured value on the digital display 1 of the BENNING CM 8.
See figure 8:
9. Maintenance
Before opening the BENNING CM 8, strictly observe that the

device is free of voltage! Electrical danger!
Working on the opened BENNING CM 8 under voltage must be carried out
by skilled electricians with special precautions for the prevention of ac­
cidents only!
Make sure that the BENNING CM 8 is free of voltage as described below before
opening the device:
- First, remove both safety measuring leads from the object to be measured.
- Then, remove both safety measuring leads from the BENNING CM 8.
- Switch the rotary switch 8 to position „OFF".
9.1 Securing the device
Under certain circumstances, safe operation of the BENNING CM 8 might no
longer be ensured, e.g. in case of:
- visible damages of the housing,
- incorrect measuring results,
- recognizable consequences of prolonged storage under inadmissible condi-
tions and
- recognizable consequences of extraordinary stress due to transport.
In such cases, immediately switch off the BENNING CM 8, 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: spezial clean-
ing 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 compartment, clean these areas as well by means of a dry cloth.
9.3 Battery replacement
Before opening the BENNING CM 8, strictly observe that the

device is free of voltage! Electrical danger!
The BENNING CM 8 is supplied by means of an integrated 9 V block battery.
Battery replacement (see figure 9) is required, if the battery symbol 3 appears
on the display 1.
Proceed as follows to replace the battery:
- Disconnect the safety measuring leads from the measuring circuit.
- Remove the safety measuring leads from the BENNING CM 8.
- Switch the rotary switch 8 to position „OFF".
- Put the BENNING CM 8 face down and unscrew the screw of the battery
compartment cover.
- Lift off the battery compartment cover (in the area of the housing slots) from
the bottom part of the battery compartment.
- Remove the discharged battery from the battery compartment and discon-
nect the battery supply lines from the battery.
- Connect the new battery to the battery supply lines and arrange them in
such a way that they are not crushed between the housing parts. Then,
place the battery into the battery compartment at the provided place.
- Lock the battery compartment cover into place on the bottom part and tight-
en the screws.
See figure 9:
Make your contribution for environmental protection! Do not
dispose of discharged batteries via the household waste.

Instead, return them to a collecting point for discharged
batteries or spezial waste. Please look for information in your
community's facilities.
02/ 2019
Temperature measurements
Battery replacement
BENNING CM 8
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21