Grundfos AquaCel AQC-D3, Installation And Operating Instructions Manual

Page: 16 / 28

English (GB)
16
Cable from measuring electrode (D)
1. Cut the electrode cables to the desired approximately
105 mm for the connections.
2. Remove 105 mm of the outer insulation.
3. Disentangle the braided screen until you reach the next part of
the insulation.
4. Cut the enclosed braided screen to 65 mm, isolate it (for
instance using a shrink tube), and fit a wire end ferrule.
Then remove the rest of the screen until you reach the
insulation.
5. Cut the brown and white insulated wire of the measuring
electrode and counter-electrode to 65 mm, and fit wire end
ferrules.
6. Fit wire end ferrules to the blue and black insulated wires of
the temperature sensor.
Fig. 17 Cable from measuring electrode (D)
12.5 Electrical connections
Preassembled systems
The preassembled systems are prewired.
1. Connect an earth leakage circuit breaker in front of the
measuring amplifier.
2. Connect the electricity supply to the measuring amplifier.
AQC-D3 measuring cell
1. Connect electrodes to the corresponding terminals of the
measuring amplifier.
2. Connect measuring electrodes (D) to the corresponding
terminals of the measuring amplifier. Fit the screen according
to the installation and operating instructions of the measuring
instrument.
3. Connect the water sensor to the corresponding terminals of
the measuring amplifier.
4. Connect an earth leakage circuit breaker in front of the
measuring amplifier.
5. Connect the electricity supply to the measuring amplifier.
Fig. 18 Conex DIA-1 / DIA-2 / DIA-2Q for mounting in a control
panel
Fig. 19 Conex DIA-1 / DIA-2 / DIA-2Q for wall mounting
TM
03
58
70
1
106
Pin Component
Pin 1 brown Measuring electrode M
Pin 2 white Counter-electrode G/C
Pin 3 blue Pt100 temperature sensor
Pin 4 black Pt100 temperature sensor
Warning
The electrical connection should be carried out
by qualified personnel!
Before connecting the supply cables, check that
the supply voltage specified on the type plate
corresponds to the local conditions!
Before connecting the supply cables, switch off
the electricity supply!
Observe the local safety regulations!
Protect the cable connections and plugs against
corrosion and humidity.
Connect an earth leakage circuit breaker in front
of the measuring amplifier.
Caution
Observe the installation and operating
instructions of the measuring amplifier!
10
5
65
Insulated
braided screen
Note
The cables are not preconnected. See section
12.4 Preparing the electrode cable for connection
to the measuring amplifier.
Caution
Observe the installation and operating
instructions of the measuring amplifier!
Caution
The temperature sensor cannot be used with
Conex DIS-D. Place the cables of the temperature
sensor so that no short-circuit can occur!
Caution
Before connecting the supply cables, check that
the supply voltage specified on the nameplate
corresponds to the local conditions! Observe the
installation and operating instructions of the
measuring amplifier!
T
M
03
58
71
22
11
TM
03 58
72 22
11
1/
11
1/
13
4/
1
1/
12
1/
14
4/
3
4/
2
4/
4
3/
1
3/
3
3/
2
3/
4
B
A
1
4
Conex
2/
3
2/
4
+
-
10
M B/RG/C
7
1
6
Pt 100
2
5
8
9
3
4
Sensorinterface
7
5
1
37 38 39 40 41 42
6
10
4
1
15 17 19 21 23 25 27 29 31 33 35
36 34 32 30 28 26 24 22 20
18
16
9
8
2
3
4