Device Installation; Hydraulic Installation; Installation Examples - Ecolab Elados EMP KKS - E10 Notice Technique

6

Device installation

6.1

Hydraulic installation

6.1.1

Installation examples

NOTE
ATTENTION
A) The arrangement of the metering pump should preferably be
made on and/or over the metering container.
NOTE
B) 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 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
C) In the injection point in principle a spring-tensioned injector or metering valve (pos. 1)
should be inserted (also during a metering into pressure-free systems).
For metering in pipelines with underpressure, a pressure control
valve (pos. 4) must be built into the metering pipe.
NOTE
To prevent the running out of the metering medium when the pump
is stopped, we also recommend the fitting of a solenoid valve (3)
which is approved for use with the pump.
Pos. Description
1 Injector valve (Metering valve)
2
External release
3 Solenoid valve
4 Pressure control valve
The suction pipes must be kept as short
as possible (see Fig. 6.3) Long and
twisted suction pipes may lead to air
buildup in the system.
The max. suction height is 2 m and the
max. flow velocity is 0.3 m/s! (see also
chapter 11.3
Always lay suction pipe so that it ascends to suction valve of metering pump. (see Fig. 6.4).
417101338_EMP_KKS_E10
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.
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.
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 overflow line never be fed back into the suction line of the metering pump.
A pressure control valve or a metering valve is not an
absolutely hermetically sealing shutoff device.
"Technical Data")
Fig. 6.3
31
Fig. 6.1
Fig. 6.2
Fig. 6.4
Rev: 09-08.12