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Assembly / installation
Air pressure
Page 12
9
Assembly / installation
9.1
Requirements on the compressed-air supply
As is the case with all pneumatic components, Pneumados metering pumps, too, should be
operated with clean and dry compressed air. In addition, a pressure reduced should be installed
upstream which guarantees a constant air pressure of 6 bar ± 10%.
The metering pump should preferably be operated with oil-free compressed air – however, oiled
compressed-air can also be used.
All parts coming into contact with compressed air are oil-resistant, however, oil may collect in the
pump housing after a longer period of time. This oil can be removed by blowing out, if required.
In order to prevent pressure fluctuations and condensate, the maintenance unit should be
installed as close as possible to the pump.
9.2
Assembly of the Pneumados metering pump
Mount the metering pump onto a tank or a bracket using 2 screws M5 and 2 washers ø 5mm.
The valves must always be installed in a vertical position to guarantee a proper function.
Install the metering pump such that the suction height or the length of the suction line is kept as
short as possible to increase the operating safety.
9.3
Pneumatic connection
Remove the protective plug (1) at the top of the metering pump housing and check whether the
gasket surface is clean.
Install the compressed air connection union with gasket, fix the direction and tighten.
Alternative, a commercially available union (connection G 1/4" for hose 6 x 4mm) can be used.
Connect the compressed air hose 6 x 4mm to the pump and pneumatic valve; keep the hose
length as short as possible. In case of a longer distance (up to max. 1m), the metering output
decreases by up to 15% and the air consumption increases.
IMPORTANT
The pneumatic hose may not be kinked!
9.4
Connection of the suction and metering line
If the suction/pressure connection (5/3) of the liquid end (4) is closed with a plug, remove the plug.
WARNING
The metering pump may still contain residual water resulting from the test at the facility!
Remove any water from the liquid end before commissioning if metering media are used
which may not come into contact with water! For this purpose, rotate the pump by 180° and
empty the liquid end, then rinse with a suitable medium from top via the suction connection.
ProMinent
®
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