Assembly; Installation Environment - ProMinent Duodos 50 PPS Assembly And Operating Instructions Manual

Assembly

4 Assembly

4.1 Installation environment

12
User qualification, installation: trained and qualified personnel
n
Ä Chapter 2.2 'User qualification' on page 7
CAUTION!
Possible consequence: Slight or minor injuries.
Material damage.
Observe the permissible ambient conditions.
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, insert short flexible sections of hose between the
double diaphragm pump and pipework to protect the double dia‐
phragm pump against vibration and tensile and compressive
forces. The installation of a pulsation damper is recommended to
reduce pulsation in the medium being pumped.