Watson-Marlow PD12I - Manual (Page 10)

INSTRUCTION HANDBOOK
PD12I / PD12P
PD12IP IH 1.03 EN Version: 1.03 Page 10 of 20
5 Dispensing with PD12
For optimal dispensing with the PD12, the following should be observed:
5.1 Vessel Placement ................................................................................................................. 10
5.2 Tube size .............................................................................................................................. 11
5.3 Nature of fill media................................................................................................................ 12
5.4 Priming tubes........................................................................................................................ 12
5.5 Drip....................................................................................................................................... 12
5.6 Hard Feed............................................................................................................................. 12
5.1 Vessel Placement
In order to build up adequate pressure and reduce friction, it is recommendable to place the
vessel containing fill media at the same level as pump head or preferably above the pump
head level. Placing the vessel higher than pump head level provides positive product support
and may reduce the calibration interval. It is also recommended to place the vessel as close
as possible to the pump on suction side.
Flexicon
Pump Head
Preferred Placement
of container
Normal Placement
of container
Suction side Pressure side
Fig. 5.1