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IM 50.560CA UA (B/4-03)
49
DEPOLOX
®
3
PLUS
RESIDUAL ANALYZER
3.3
Free Chlorine (Bare Electrode) Sensor Kit
3.3.1
Start-Up of the Measuring Cell
a. Unscrew nut (2) and remove cover (3) (see Dwg. 50.560.000.010 in
Section 5).
b. Hold electrode assembly together with electrolyte reservoir (4-11) at
the cover (10) and pull it out of the cell block (13) without turning.
c. Remove felt ring (transport protection of the membrane, 6)
d. Exchange plug (4) with separately supplied plug fitted with mem-
brane for venting the electrolyte reservoir.
e. Place electrode assembly with electrolyte reservoir back into the cell
block. Keying pin in the electrode assembly must snap into position.
f. Fill a half capful of grit (U-95653) into the cell block.
g. Place cover (3) and tighten by nut (2).
h. Allow sample water flow by opening the inlet valve(s).
i. After one hour the measuring signal has stabilized so far that a first
calibration should be made as function test.
NOTE: For the first starting-up: After 24 hours of running time a
further calibration is necessary. Air bubbles building up at the inner
surface of the cell block and preventing somewhat the rotation of the
grit will disappear after a running-in period of 24 to 48 hours.
3.3.2 Adjusting the Flow Regulator
The flow regulator is adjusted to a flow of 33 l/h (=0.55 l/min.). If neces-
sary adjust the regulator as follows:
a. Remove the left or right hinge pin at the measuring cell and tilt the
housing front to the side.
b. At the inner side of the front is the flow regulator. In the middle of
the regulator is the adjusting screw. Turn the screw with a coin or a
screwdriver (>10 mm). Turn to the right to reduce flow; turn to the
left to increase flow.
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