Evoqua WALLACE & TIERNAN SFC, Original Instruction Manual

Page: 222 / 288

222
WT.050.590.000.DE.IM.0719
Maintenance
SFC
7.
7.2 Maintenance of flow block assembly DEPOLOX
®
5
Changing sell sand with the
3-electrode cell DEPOLOX
®
5,
DEPOLOX
®
Pool
The cell sand required for constant cleaning of the electrodes
grinds itself down over time until it is very fine. It must therefore be
replaced regularly. Cell sand is delivered in a plastic bottle:
1 Remove cover of flow block assembly DEPOLOX
®
5.
2 Close the ball valve on the sample water inlet and on the outlet
(pressurized version).
3 Open the drain valve and drain the cell body (hold container
underneath).
4 Close the drain valve when the cell body is empty.
5 Remove the sensors. Remove sensor cable from the sensors.
6 Loosen the lower cap on the 3-electrode cell (DEPOLOX
®
5
only).
7 Remove the signal cable (DEPOLOX
®
5 only).
8 Unscrew the upper knurled nut on the electrolyte container
(DEPOLOX
®
5 only).
9 Using the electrode mount, push the electrolyte tank
downwards out of the cell body (DEPOLOX
®
5 only) or
remove the flow distributor cap (DEPOLOX
®
Pool).
10 Wash the cell sand out of the electrode mount or flow
distributor cap.
11 Using the electrolyte container, insert the electrode mount
back into the cell body or screw the flow distributor cap back
on.
Please note
The cell body's dowel pin must be locked into place in the
appropriate hole in the electrode mount (DEPOLOX
®
5 only).
12 Screw the upper knurled nut back on the electrolyte container
(DEPOLOX
®
5 only).
13 Reconnect the signal cable acc. to color (DEPOLOX
®
5 only).
CNT Counter electrode Blue point Blue cable
WRK Working electrode Red point Pink cable
Ref Reference electrode
(middle) White cable