39
DEPOLOX® 5 E flow cell
5. Maintenance
EN
Replacing electrolyte solution
11 Unscrew the upper knurled nut from the
electrolyte tank.
12 Take off or unscrew the cell body cover.
13 Remove the electrolyte tank complete
with electrode support from the cell body.
Rinsing out cleaning sand
14 Rinse the cleaning sand out of the elec-
trode mount with distilled water.
15 Unscrew the knurled nut from the elec-
trode mount and pull the electrolyte tank
out of the electrode mount.
16 Pull the electrolyte tank upwards out off
the electrode support.
17 Pull the plug out of the electrolyte tank.
Emptying electrolyte
18 Turn the electrolyte container upside
down and drain the KCI electrolytes by
lightly shaking it.
Replacing reference electrode
19 Replace the reference electrode. To do
this, screw the reference electrode out of
the electrolyte tank. Lightly moisten the
O-ring and screw a new reference elec-
trode into the electrolyte tank.
Replacing diaphragms
20 Remove both diaphragms from the elec-
trolyte tank using a suitable tool (e.g.
tweezers).
21 Push new diaphragms into the electrolyte
tank. Lightly moisten the O-ring before fit-
ting.
22 Reinsert the electrolyte tank into the elec-
trode support.
Filling electrolyte
23 Fill the tank with fresh electrolyte solu-
tion (approx. 3 cm above the water level
or up to the narrow section of the KCI
tank)
.
24 Insert the plug into the electrolyte tank.
25 Reinsert the electrode mount complete
with electrolyte tank into the cell body.
The cell body’s locating pin must engage
in the corresponding hole in the electrode
mount.
26 Screw the upper knurled nut back onto
the electrolyte tank.
27 Reconnect the signal cable, observing the
correct colors. See 4.15 “Connecting sen-
sors with DFMe electronics module”.
28 Fit the cap (B).
29 Fill in cleaning sand. See 4.14 “Filling elec-
30 Insert or screw on the sensor and connect
with DFMe electronics module.
31 Refit and engage the housing cover of
DEPOLOX
®
5 E flow cell.
32 Open the shut-off ball valve (D) at the
sample water inlet.
33 On the pressurized version, open the
shut-off ball valve on the sample water
outlet.
34 The cell body (A) refills with sample water.
35 Re-establish the power supply.
NOTICE
Observe the use-by date of the electrolyte
solution!
NOTICE
•
After topping up or replacing cleaning
sand, the electrode current may
increase slightly for about three hours.
Do not calibrate during this time. Recali-
brate after each cell sand replacement.
The calibration must be checked after
one day.
•
After 2 to 3 hours running-in time, per-
form a chlorine calibration. If necessary,
repeat the chlorine calibration after 24
hours. See section Calibration in instruc-
tion manual “700 P electronics module”
of “700 M electronics module”. An initi-
ally rotating air bubble at the bottom of
the cell body does not affect the measu-
rement.
