7
Connecting the Pneumatic Pump K–1900
Connecting the Pneumatic Pump K–1900
Compressed Air Connections
Make sure that your compressed air system to be used with the Pneu-matic
Pump K–1900 is able to maintain pressures up to 7 bar. With-out back pressure
the air consumption would be 80 L/min. If the Pneumatic Pump K-1900 works
against pressure the consumption of air is much lower depending on the liquid
pressure.
The connector to the compressed air is located on the lower rear panel of the
pump. Connect the coupler for the pressure tube to the coupler socket. Push
the pressure tube (not delivered) from the com-pressed air supply over the
coupler and secure it with an appropriate clamp. Connect the coupler socket to
the compressed air connector of the pump (see Fig. 2).
To disconnect from the compressed air supply: Hold the brass part of the
coupler with one hand and pull the blue part of the coupler socket away from
the pump with the other hand.
Compressed
air supply
Pump
Coupler
Coupler
socket
Connector for
compressed air
Fig. 3
Air pressure connection of the K-1900
Pump Heads and Hydraulic Connections
The pump should be rinsed with a methanol-water mixture (1:9 v/v) before
first usage. Make sure that all hydraulic connec-tions are suitable for the
system pressure and flow rate of your liquid transportation system.
Identifying installed Pump Heads
Maximum flow rate, 100, 250, 500, or 1000 ml/min, is indicated on a label on
the front of the pump head. This values are valid for the HPLC-Pump K-1800.
Working with the pneumatic pump K-1900 the maximum flow rates are
approximately two times higher .
Fig. 4
Pump head label (1000ml head)
