Wohler WA 335 Instructions De Service page 61

Position of the electrode
Fig. 46: Electrode
Cleaning the electrode
Changeing the membrane set
Measuring with the O2 Probe (option)
• Check the central of the electrode surface. It
should be clean in the working area (see
photo).
Clean the electrode if too many residues
•
have been found on electrode working area.
(Too many residues attached might disturb
the chemical reaction during measuring.)
Rotate to unscrew the membrane set from
•
the probe.
CAUTION!
Any electrolyte still present may leak out. Hold
the electrode down.
Clean the probe with a soft fiber cloth or if
•
necessary with the finger nail.
Use a knife blade to scrape lightly on the
•
electrode to remove the white residue as
below image. Do not scrape the "surface of
working area" by knife blade to prevent
damage.
• Use clean water to wash away the remain-
ing impurities.
NOTE!
Under normal use, the 2 Replacement Mem-
brane Sets enclosed in the package of the O
Probe will be enough to cover the replacement
need for the entire O
Replace membrane set when any of the
•
Probe life time.
2
EN
-
2
61