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

Страница: 52 / 82

52
WT.050.810.040.DE.IM.0519
Maintenance
DEPOLOX
®
5 E flow cell
5.
5.7 Replacing or cleaning electrode cleaning sand,
electrolyte solution, reference electrode and
diaphragms
Please note
When replacing the cleaning sand, check also the electrolyte solution,
the reference electrode, the diaphragms, the fine filter, the flow switch
and the check valve. Replace or clean if necessary.
Please note
Steps 1 to 14, 22, and 25 to 34 apply only to replacement and cleaning
of the electrode cleaning sand.
Proceed as follows:
1 Switch off the power supply.
2 Close the shut-off ball valve (D) at the sample water inlet.
3 On the pressurized version, close the shut-off ball valve at the sam -
ple water outlet.
4 Open the drain screw on the sample taking unit (C) and empty the
cell body. To do so, hold a collection vessel under it and temporarily
loosen a plug or sensor to allow air to flow in.
5 When the cell body (A) is empty, close the drain screw once more.
6 Remove the housing cover of the DEPOLOX
®
5 E flow cell.
7 Remove the sensors from the mounting hole in cell body cover and
keep them in a safe place. See appropriate sensor operating instruc -
tions.
8 Separate the cable gland from DFMe electronics module. Hold the
cable while doing this as it must not be allowed to twist.
9 Unscrew cap (B) to the 3-electrode measuring cell counterclockwise
up to the mark and take it off. See chapter 4.4.13 “Connecting sen -
sors with DFMe electronics module”.
10 Remove the signal cables (red, blue, white).
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.
D C
A
B