Device Installation; Hydraulic Installation; Installation Examples - Ecolab Elados EMP IV E00 Notice Technique

6

Device installation

6.1

Hydraulic installation

6.1.1

Installation examples

ATTENTION
NOTE
A)
The arrangement of the metering pump should preferably be
made on and/or over the metering container.
NOTE
B)
For easy venting of the metering pump with an applied metering
backpressure > 0.05 MPa (0.5 bar), an appropriate ball valve
(pos. 4) can be installed in the pressure pipe. The venting pipe
should be led back pressure-free into the container.
ATTENTION
C) Between the back-pressure in the injection point and the pressure
at the metering pump a positive difference of pressure must
prevail of at least 0.01 MPa (1 bar). If this is not the case, a
pressure control valve (pos. 2) must be built into the metering line.
In addition it recommends to install itself for the avoidance of inadmissibly high pressures in
the metering line an appropriate safety overflow valve (pos. 3).
The by-pass pipe of this valve should be led back pressure-free into the container
ATTENTION
NOTE
D) A spring-loaded injection or metering valve (pos. 1) should be installed at the injection
point (including with supplying metered amounts into depressurised systems).
For outgasing media and products with a viscosity of
> 100 mPas, flooded suction is recommended.
In using this method, however, ensure that the injection point is
positioned over the discharge container and/or an appropriate
pressure control valve (pos. 2) is installed.
These measures prevent the discharge container from being
siphoned empty.
Pos. Description
1
Injector valve (Metering valve)
2 Pressure control valve
3 Overflow valve
417101090_EMP_IV_E00_E10
The installation must only be performed by authorized personnel and the general
guidelines and local installation regulations must be observed!
Specific measures and protection devices for the metering of dangerous or aggressive
chemicals are not provided here.
When using such chemicals, always observe the legal regulations and the relevant
product datasheet.
The installation examples and applications provided here are of a functional nature.
They give an overview of installation types which are correct or to be avoided for the
correct functioning of the pump.
For media with a tendency towards
sedimentation, the bottom admisson valve or foot
valve of the suction line / suction lance must be
fitted above the anticipated layer of sludge.
The venting pipe must never be fed back into the
suction line of the metering pump!
The overflow line never be fed back into the suction line of the metering pump.
In place of a pressure valve and an overflow valve also a multifunction valve (MFV) from
our delivery program can be used.
- 40 -
Fig. 6.1
Fig. 6.2
Rev. 8-06.13