Ecolab EcoPro Manuel D'utilisation page 135

Installation examples
In the case of media that tend towards sedimentation, the base suction valve
or the foot valve of the suction line or suction lance must be mounted above
the expected sludge layer.
Term definition: Siphoning
Siphoning refers to the maximum fluid level (in this case the supply container)
being higher than the lowest point in the metering line. In this process, the fluid
runs out of the metering line without any pump output and solely via what is
known as the "hydrostatic pressure equalisation".
CAUTION!
When connecting the suction and charge pipe, make sure that the O-rings are
mounted on the connections in order to achieve the necessary sealing.
An EcoAdd pump is shown in the following installation examples. They could
equally apply to all other pumps.
Installation example 1
1 C B
2
3
D
CAUTION!
Neither the overflow line nor the vent line is permitted to be fed back into the
suction line of the metering pump!
The metering pump should ideally be positioned on or over the metering
container .
A positive pressure difference
between the counterpressure at the injection point and the existing pressure
at the metering pump. If this is not the case, a pressure control valve
A
must be included in the metering line.
In addition, to avoid excessively high pressure levels in the metering line, an
appropriate excess safety valve
This valve's overflow line should be fed back into the container in a
depressurised state.
A spring-loaded injection, or metering valve should be installed at the
injection point (including with supplying metered amounts
depressurised systems).
To allow venting of the metering pump, the vent connection should be
routed via a separate line back to the metering medium container
33
Assembly and connection
of at least 0.1 MPa (1 bar) must exist
must be installed.
MAN046879 Rev. 12-01.2024
into
.