Evoqua WALLACE & TIERNAN DEPOLOX 5 E 700 P Series, Instruction Manual

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54
WT.050.810.040.DE.IM.0519
Maintenance
DEPOLOX
®
5 E flow cell
5.
Please note
After topping up or replacing cleaning sand, the electrode current may in -
crease slightly for about three hours. Do not calibrate during this time.
Recalibrate after each cell sand replacement. The calibration must be
checked after one day.
Please note
After 2 to 3 hours running-in time, perform a chlorine calibration. If nec -
essary, repeat the chlorine calibration after 24 hours. See section Cali -
bration in instruction manual “700 P electronics module” of “700 M
electronics module”. An initially rotating air bubble at the bottom of the
cell body does not affect the measurement.
5.8 Cleaning or replacing the fine filter
The fine filter must be cleaned or replaced to protect the membrane sen -
sor’s delicate membrane against soiling or damage and to prevent clog -
ging. Proceed as follows:
1 Switch off the power supply.
2 Drain the sample water inlet and outlet line.
3 Remove the housing cover of the DEPOLOX
®
5 E flow cell.
4 Release both knurled nuts (A).
5 Remove the complete filter unit.
6 Remove the fine filter (C). To do this, screw the M6 screw into the
fine filter and pull the fine filter out of the filter unit.
7 Rinse the fine filter with water, replace if necessary.
8 Push the fine filter into the filter unit. Ensure that the O-ring (B) is fit -
ted correctly.
9 Fit the complete filter unit. Ensure that it is in the correct position (top/
bottom).
10 Tighten the knurled nuts (A).
11 Refit and engage the housing cover of the DEPOLOX
®
5 E flow cell.
12 Reconnect the sample water inlet and outlet lines.
13 Re-establish the power supply.
Image 2 Filter unit cross-section
A Knurled nut
B O-ring
C Fine filter
A
B
C
A
top
bottom