Watson-Marlow 120U/D1 - Manual (Page 32)

Watson-Marlow 400D1, 400DM2 and 400DM3 pumpheads: operating instructions 4
3.6 400DM2 and
400DM3 tube loading
and removal
Release the track by disengaging the sprung
track pin.
Locate the first tube bridge into the appropriate
tube bridge holder slot. Feed the tubing in
around the rotor. Locate the centre tube bridge
into the bridge holder slot immediately opposite
the first tube bridge. Repeat for the remaining
one (400DM2) or two (400DM3) channels. Make
sure that there are no twists or kinks in the
tubing after loading as this will adversely affect
tube life.
Reposition the track over the rotor and fix by
slotting the track pin back into the track slot.
Note: over-tightening the sprung track pin can
damage the tube and the pumphead.
Tube removal
Release the track by disengaging the sprung
track pin.
Remove both tubing bridges from their location
slots and remove the tubing from the pump-
head.
3.7 400D1, 400DM2
and 400DM3
pumphead spares
Description Part code
400D1 pumphead 043.001D.D1C
400DM2 pumphead 043.001D.D2C
400DM3 pumphead 043.001D.D3C
Over-tightening the sprung
track pin can damage the tube
and the pumphead.