Preparing The Measuring System - Grundfos AQC-D6 Montage- Und Betriebsanleitung

Connecting to the connection block of the Oxiperm Pro, from
software version V0.20
67 69 71
68
53 55 57
54 56 58
Fig. 11 Connecting to the connection block of the Oxiperm
Pro, from software version V0.20
Pos. Connection Description
AQC-D6 measuring cell
67 - 12 V Brown
68 White
69 M Yellow
72 Green
Water sensor
54 + Black
53 - White
1. Connect any current output cables as required.
2. Connect any relay contacts as required.
Always observe the Oxiperm Pro installation and operating
instructions.
3. Connect the power supply cable.
12
70 72
9.2.2 Connecting the circulating pump
The circulating pump (asynchronous squirrel cage motor) on the
measuring module is powered directly by the power supply and is
not connected to the Oxiperm Pro control unit. It is equipped with
thermal overload or impedance protection, and therefore external
motor protection is not required. The required connected loads
are indicated on the nameplate of the circulating pump.
You will also find electrical data in section
the UPS 25-60N circulating pump.
An on/off switch should be connected to the power
supply cable to allow the circulating pump to be
Note
switched off during long measuring module
downtimes.
Dry running will damage the circulating pump!
The pump bearings are lubricated by the liquid
Caution
flowing through the pump, although the pressure
must be at least 0.05 bar (0.5 mWS).

9.3 Preparing the measuring system

Please also observe section 10.
The measuring cell (pos. 3) is filled with electrolyte at delivery.
Please observe the precise instructions in section
12.2 Cleaning!
Caution
Risk of incorrect measurement.
The protection cap of the measuring cell is filled with
Note
electrolyte!
Prepare the flow fitting (pos. 2):
Loosen the PDVF ring with 1" thread (pos. 1).
Fit the measuring cell (pos. 3) in the flow fitting (pos. 2).
1. Remove the protection cap.
2. Slide the measuring cell into the flow fitting until the liquid
flows well around it.
Tip: When fitted in its final position, the upper part of the
measuring cell should still project around 20 mm out of the flow
fitting.
3. Fix the measuring cell (pos. 3) in place using the PVDF ring
(pos. 1).
Warning
A sudden failure of the measuring cell can lead to
excessive levels of chlorine dioxide! Make sure you
have suitable provisions in place for this!
6.2.1 Electrical data of
Operation.