Grundfos CU 300 Installation and Operating Instructions - Geotech

8. CU 300 connected to water meter
8.1 Description
Using a water meter (pulse flow meter) enables:
• monitoring of the flow,
• stop of pump after a given quantity of water has
been pumped and
• indication of accumulated flow and the energy
consumption required to pump 1 m³.
Fig. 32 shows an example of an irrigation system
incorporating a water meter.
Fig. 32
8.4 Mounting the CU 300
The CU 300 is designed for wall mounting.
The box has six mounting holes (ø4), see fig. 33
(dimensions stated in mm).
The CU 300 must be mounted:
• horizontally (see fig. 33) to allow condensed water,
if any, to escape.
• on a plane surface to avoid deformation of the
box.
Fig. 33
104.5
104.5
1
2
100
140.5
Pos. Description
1 CU 300
2 Water meter (pulse flow meter)
TM01 2659 4601
The CU 300 is supplied with a set of gaskets for the
Pg screwed connections.
The gaskets are to be used for the connection of
cables/wires to ensure tight connections (IP 55) and
cable relief.
TM01 2824 2498
8.2 Installation
8.3 Location
Before starting any work on the CU 300,
make sure that the electricity supply has
been switched off and that it cannot be accidentally
switched on.
The CU 300 can be placed both indoors and outdoors.
It must not be exposed to direct sunlight.
30