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Measuring transducer (option)
•
Connect the terminals of the plug with the corresponding
terminals of an external evaluation device according to the
connection chart.
2
1
+
-
+
-
24 V DC
Fig. 24 Connection chart of measuring transducer
5.1.3 Measurement and Control Electronics Conex (option)
•
see operation manual of measuring amplifiers and controller
®
Conex
DIA-2Q or controller Conex
5.1.4 Chlorine measuring cell (option)
•
see operation manual of the chlorine measuring cell
5.1.5 Mounting the manual/automatic position remote
indication at the rate valve
This indication shows e.g. in the switch room, if the optional
servomotor is engaged and thus able to convert the incoming
signals.
•
Loosen the cover of the adjustment knob with a big
screwdriver; take off the adjustment knob.
•
Put the magnetic bridge sensor (item 5.6) into the lower cavity
of the gearbox bearing and fasten using the two recessed
head screws (item 5.7).
•
Disassemble the adjustment knob by fully screwing out the
clamping nut.
•
Insert the adjustment knob tongs into the washer disc (item
5.5) in a way that the tongs collar is in the washer disc.
•
Apply the washer disc to the adjustment knob enclosure so
that the holding pin of the enclosure dips into the hole of the
washer disc.
•
Slide the spring washer over the adjustment knob tongs and
screw the clamping nut onto the tongs.
•
Put the adjustment knob onto the gearbox spindle as far as it
will go and tighten the clamping nut.
•
Fit the cover of the adjustment knob again.
5.14
5.13
Fig. 25 Manual/automatic position indication
4-20 mA
®
DIS-2Q
5.1
5.12
5.7
5.6
5.5
5.1.6 Gas connections
Warning
Ensure that all container valves are closed before
connecting!
Only use the intended gas lines!
•
Connect line from vacuum regulator
•
Connect line to injector
from vacuum regulator
to injector
Fig. 26 Gas connections of gas dosing systen VGS
5.2 Checks before commissioning
Check tightness of the total plant before start-up
Warning
Check the tightness not until the total plant is ready
for start-up.
Danger of chlorine break-out!
5.2.1 Checking the gas solution lines and the diapgragm non-
return of the injector
•
Observe the manual of the injector!
5.2.2 Checking the tightness of the vacuum lines
Vacuum lines are all lines between vacuum regulator and injector.
•
Close all container valves
•
Close the rate valve
•
Open the shut-off valve at the injection unit
•
Open motive water valve
•
Switch on the booster pump
•
Open the rate valve
Floater shows gas flow or vacuummeter shows more than -
9 m w.c. => Leakage in vacuum line!
•
Close rate valve
•
Switch off booster pump
•
Close motive water valve
•
Close the shut-off valve at the injection unit
•
Check the vacuum lines and the connection. If necessary,
•
carefully re-tighten them.
•
Check tightness again!
– Floater shows no gas flow, vacuummeter shows -9 m w.c. or
less => Vacuum lines are tight.
More possible reasons for insufficient operating
vacuum
•
injector layed out too weakly or defective
Note
•
injector obstructed
•
booster pump layed out too weakly or defective
19
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