Grundfos Conex DIA-1-A PA/HP Montage- Und Betriebsanleitung Seite 17

13.2.4 Filling the diaphragm cap with electrolyte
Ensure that the tubular ring is correctly positioned!
Note
The valve opening must be completely covered!
Do not touch the diaphragm with the hand!
Caution
Hold the diaphragm cap at the edges as shown in fig.
10.
1. Hold the diaphragm cap at the side edges.
2. Pour the electrolyte into the diaphragm cap up to the screw
thread.
3. Use the electrode shaft to knock several times on the top of
the cap as shown below.
– Repeat this procedure until no more air bubbles are seen.
Fig. 10 Filling with electrolyte
4. After that, fill the diaphragm cap completely up to the brim.
Warning
When screwing on the diaphragm cap, the electrolyte
can squirt from the valve opening!
Strictly follow the instructions in section
13.2.5 Screwing the diaphragm cap onto the
electrode shaft.
Never use another electrolyte!
Caution
If the electrode is damaged by using a wrong
electrolyte, the warranty becomes void!
13.2.5 Screwing the diaphragm cap onto the electrode shaft
Warning
The electrolyte can squirt from the valve opening!
Make sure to screw the electrode shaft into the
diaphragm cap!
Do it carefully and slowly as described below!
Do not touch the valve with the hand, and do not
Caution
close the valve by hand, in order to allow the surplus
electrolyte to escape through the valve opening.
1. Hold the electrode shaft vertically, and place it carefully upon
the filled diaphragm cap.
2. Lock the thread into place.
3. Slowly screw the electrode shaft clockwise into the
diaphragm cap by hand.
– The surplus electrolyte escapes through the valve opening.
– At the O-ring, the screwing stops the first time.
– Screw further until the diaphragm cap is flush-mounted on
the electrode shaft.
Fig. 11 Screwing the diaphragm cap onto the electrode shaft
13.2.6 Recommissioning the system
1. Start up as described in section
2. Wait until the required running-in period is over:
– about one hour in case of peracetic acid
– about three hours in case of hydrogen oxide.
3. Calibrate the measuring system again!
10.4 Starting up.
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