Metrohm Multi-Mode Electrode pro - Manual (Page 42)

5.2 Large maintenance
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6.1246.120 Multi-Mode-Electrode pro
2 Screwing on the mounting ring
Screw on the gray mounting ring and carefully pull the needle holder
out of the MME pro.
Hold the mounting ring tight and pull out the needle holder by care-
fully jiggling it from side to side.
3 Pulling out the needle holder
Pull the needle out of the membrane of the needle holder.
4 Removing the needle
Dispose of the needle.
5.2.5 Cleaning the electrode body
Note
The electrode body must not be rinsed with water nor with solvents
(ethanol).
Before you can clean the electrode body, the following requirements must
be fulfilled:
￭ The capillary is removed.
￭ The needle holder and the needle are removed.
￭ The screw cap of the mercury refill opening is removed and the mer-
cury reservoir is empty.
1 Wipe out all the openings of the electrode body with a lint free cloth.
To be able to reach the entire mercury reservoir, you could use, for
instance, a used capillary.
Note
If the electrode body is very dirty, it can be wiped clean with a lint
free cloth tempered with ultrapure water or ethanol. Let it well dry
afterwards.
2 Clean the contact pin (1-10) particularly thoroughly.
See also the video in the multimedia guide.