HC997-999
– MOD. D
MAINTENANCE PROBE A - J
Digital multifunction solenoid metering pump
ENGLISH
ADSP9000033
03/09/2015 Rev.1.2
48/100
6.0 Electrode winter break
Remove the Cl electrode from probe holder and discard the electrolyte from the mebrane cap and G-holder (15
only for ADELCJ15
), cleaning them with a little fresh water; then dry the electrode carefully without damaging the
membrane and the internal surface. Once the electrode is dried up, stock it in its box for winter break.
7.0 Maintenance and Coming season start-up procedures
-
It’s recommended repeat the calibration procedure for Cl electrode. If calibration is no longer possible, because
the indication is too low, then the tip of the electrode finger (measuring electrode) should be lightly sanded down,
and the electrolyte, and possibly the membrane cap too, should be replaced.
7.1 Cleaning the Cl electrode finger tip / replacing the membrane cap and electrolyte
The brown coating on the combined measuring/reference electrode (9) must not be rubbed off! Do not touch the
electrode finger or make it dirty! Follow the steps precisely as described below
!
Screw the membrane cap off the cell shaft.
Clean and dry the electrode finger (8) and the membrane cap (11)
Use the special abrasive paper that comes with the delivery to clean just the tip of the dry electrode finger (9).
To do this, place the special abrasive paper on a paper towel, hold it by one corner, and, holding the measuring
cell upright, drag the tip of the electrode over the abrasive paper two or three times.
Use a new membrane cap, if necessary.
Fill the membrane cap (11) right up with the electrolyte provided,
making sure that there are no air bubbles.
Screw the membrane cap onto the cell shaft.
Notes
An initial resistance to the screwing action is caused by the O-ring (7) which creates the seal. The membrane cap
(11) must be screwed in further, until it touches the shaft (5) of the measuring cell. When the membrane cap is
completely screwed on, the measuring cell must not knock against the membrane (13). This would damage it and
make it unusable!
!WARNING!
The electrolyte can escape from the valve when the membrane lid unscrew (5)
If the liquid comes out, clean running water.
