Metrohm Multi-Mode Electrode pro - Manual (Page 33)

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5 Maintenance
6.1246.120 Multi-Mode-Electrode pro
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2 Removing the old capillary
Caution
Do not touch the needle!
￭ Turn the MME pro in the electrode stand.
￭ Loosen the capillary retaining screw and lift it so far that you can
see the lower end of the capillary, the end with the broad open-
ing.
￭ Check whether there is still mercury in the opening.
If there is mercury left in the capillary, then gently knock at the
capillary, this will cause the mercury to flow back into the elec-
trode body.
￭ With one hand, hold down the capillary retaining screw, with the
other hand pull the capillary out of the holder.
3 Inserting the new capillary
Caution
Only hold the capillary by its sides!
Do not exert pressure on the tip of the capillary!
Each capillary is individually packed in a transparent plastic wrapper.
￭ Cut open the plastic wrapper with the scissors at the marking and
unwrap the capillary.
￭ Grab the capillary at its sides, insert it through the capillary retain-
ing screw into the electrode body.
￭ Gently press it through the silicone seal.
4 Fastening the capillary retaining screw
￭ First, fasten the capillary retaining screw by hand until you feel a
slight resistance.
￭ Then slide the wrench from the top over the capillary retaining
screw.
The knobs on the wrench fit exactly into the grooves oft the capil-
lary retaining screw thus holding the wrench in place.
￭ Turn the handle by pushing it clockwise with one finger until the
wrench falls off.
Now the capillary retaining screw is correctly fastened.