ECOLAB EcoAdd Betriebsanleitung Seite 249

Installation example 3
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2
3
4
A pressure-retention valve or metering valve is not a shut-off device which is
absolutely tight sealing.
In order to prevent the metering medium from escaping while the pump is
stopped, we also recommend installing a solenoid valve (pos. 3), which is
released with the pump.
Installation example 4
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2
Installation example 5
When metering in pipes with a vacuum, a pressure control valve (item 4)
must be installed in the metering line.
1 Injector valve / metering valve
2 External release
3 Solenoid valve
4 Pressure control valve
The metering point should not be positioned below the supply container as
this creates a risk of the supply container being siphoned empty.
1 Overflow valve
2 Injection valve / metering valve
Suction lines should be kept as short as possible.
Long and intertwined suction tubes can lead to accumulation of air in the
system.
The suction height must be max. 2 m and the flow rate max. 0.3 m/s.
45
Assembly and connection
MAN046939 Rev. 6-10.2021