Evoqua WALLACE & TIERNAN DEPOLOX 5 E 700 P Series, Инструкция по эксплуатации

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DEPOLOX
®
5 E flow cell
Maintenance
5.
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5.4 Checking electrode cleaning sand
Every week, check if there is sufficient electrode cleaning sand in the cell
body. The cleaning sand must be swirled around in the bottom part of the
cell body. The electrode cleaning sand is necessary for cleaning the elec -
trode of the 3-electrode measuring cell and wears with time. Replace if
necessary. See chapter 5.7 “Replacing or cleaning electrode cleaning
sand, electrolyte solution, reference electrode and diaphragms”.
5.5 Checking electrolyte solution level
Check whether the electrolyte solution is filled approx. 3 cm above water
level (narrowing of the KCL container) and replenish if necessary.
Proceed as follows:
1 Remove the plug in the upper part of the electrolyte tank.
2 Inject the electrolyte. Use the syringe in the accessory kit.
5.6 Checking diaphragms
The two diaphragms (A) in the electrolyte tank form the connection
between the reference electrolytes and the sample water. They cannot
be cleaned. The diaphragms should be white in color. Any discoloration
is an indication that they are clogging and should be replaced.
If the sample water quality is poor (e.g. high iron content), the dia -
phragms become soiled. This influences the measuring accuracy. The
two diaphragms in the electrode case must therefore be replaced regu -
larly.
If sample water quality is very good, the diaphragms can remain installed
for up to a year, after which they must be replaced. See chapter 5.7
“Replacing or cleaning electrode cleaning sand, electrolyte solution, ref -
erence electrode and diaphragms”.
Image 1 Cross-section through electrolyte tank
A Diaphragms
A