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m-120-en-02
Pumphead installation
A correctly engineered installation will promote the best possible tube life, so please ensure that the
following guidelinesarefollowed:
•
Avoid tight pipeline bends, pipe reducers and excessive lengths of smaller bore tubing than that in
thepumphead, particularly in pipelineson thesuction side.
•
Ensure that connecting pipework and fittings are suitably rated to handle the predicted pipeline
pressure.
•
If rigid pipework comes in close proximity to the pumphead, a drop-out section of pipework will
simplify tube replacement.
114DV tube holder positioning
The pumphead can be adjusted to accommodate 1.6mm wall tubing in sizes from 0.5mm bore to 4.8mm
bore.
Tube holder position
Tube bore size
0.5mm
0.8mm
1.6mm
2.4mm
3.2mm
4.0mm 4.8mm
Inner
ü
ü
ü
ü
ü
û
û
Outer
û
û
û
ü
ü
ü
ü
With the smaller bore tubes of 0.5mm, 0.8mm and 1.6mm the inner position must be used to prevent the
risk of tube slipping through the clamps and wandering across the rollers causing premature tube
rupture.
With the larger bore tubes of 4.0mm and 4.8mm the outer position must be used to prevent the flow rate
being excessively reduced.
For tubing boresof 2.4mm and 3.2mm either setting may be used, asappropriate for the application. The
inner setting will clamp the tube harder, reducing tube slip but has the potential to marginally reduce flow
rate. Theouter setting willoptimise flowratebuttherisk of tube slip isincreased.
Thetube holder isfactory pre-setto theouter position.
114DV tube holder repositioning
To change from the large tube to the small tube setting
Switch off the pump before changing the tube holder position. Use a pointed device such as a ball-point
pen to reposition thelower tube holderson both sidesof thepumphead.
•
Lifttheflip top untilfully open.
•
Place thepointed device pointing down into thesmalldepression pictured here.
