Metrohm Multi-Mode Electrode pro - Manual (Page 46)

5.2 Large maintenance
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6.1246.120 Multi-Mode-Electrode pro
￭ Electrode stand (6.2615.130)
￭ New needle (6.1247.020)
￭ Wrench (6.1247.220)
￭ Scissors
1 2
3 4
Figure 12 MME pro – Inserting the needle
1 Inserting a new needle
Each needle is individually wrapped in a plastic wrapper.
Note
Do not touch the needle with bare hands!
￭ Cut open the wrapper of the new needle with the scissors and
unwrap the white plastic part only. Do not yet completely remove
the wrapper.
￭ Insert the needle into the hole of the membrane and press in as
far as the white marking. Now, remove the wrapper.
2 Inserting the needle holder
￭ Insert the needle holder with the new needle into the MME pro.
Press in as far as it will go.
3 Removing the mounting ring
￭ Unscrew the mounting ring and remove it.