Assembly Of The Pump; Installation Environment - ProMinent Duodos 20 PPS Assembly And Operating Instructions Manual

Assembly of the pump

4 Assembly of the pump
Permissible ambient conditions
Tab. 4: Permissible ambient conditions for operation
All versions:
All versions:

4.1 Installation environment

12
User qualification, installation: trained and qualified personnel
n
Ä Chapter 2.2 'User qualification' on page 8 .
Observe the permissible ambient conditions.
- 10 °C ... 40 °C
< 95% relative air humidity (non-condensing)
Upright installation
Install the double diaphragm pump upright and
plumb. The valves of the double diaphragm pump
operate when loaded by gravity. The valve balls
are pressed by gravity into the valve seat and then
seal it off. Installation outside the vertical axis
impairs the function of the valves.
Nominal width of the pipework
The threaded connectors must not reduce the
nominal width of the pipework or the double dia‐
phragm pump. The hydraulic connectors have
internal and external threads. Do not screw
threaded fittings on to the internal thread as this
would lead to a reduction of the nominal width.
Keep the suction line short and the number of pipe fittings minimal.
Do not reduce the diameter of the suction line.
If a rigid pipework system is used, it is essential that short flexible
sections of hose are inserted between the double diaphragm pump
and pipework to protect the double diaphragm pump against vibra‐
tion and from tensile and compressive forces.
We recommend installing a pulsation damper to reduce pulsation
in the medium to be pumped.