Metrohm 899 Coulometer - Manual (Page 26)

3.3 Connecting the coulometer to the power supply
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899 Coulometer
Figure 8 Connecting the Power Box
Proceed as follows:
1 Connect the plug of the Power Box with the mains connection (2-7)
of the Coulometer.
Note
The Power Box plug is protected against accidental disconnection
of the cable by means of a "pull-out protection" feature. If you
wish to pull out the plug, you will first need to pull back the outer
plug sleeve.
Caution
Switch off the Coulometer correctly by pressing the red [STOP] key
before you interrupt the connection with the Power Box. If this is not
done, then there is a danger of data loss.