Watson-Marlow 401U - Manual (Page 8)

8
Tube loading
• Release the track by disengaging the sprung track pin.
• Before tube loading, make sure that enough suction and delivery tubing is available to connect into
the remaining pipeline or to reach the suction reservoir and delivery point.
• Locate the tubing into the suction side tube clamp. Feed the tubing in around the rotor, maintaining
reasonable tube tension so that the tube sits around the rotor, and locate into the delivery side tube
clamp. Make sure that there are no twists or kinks in the tubing after loading as this will reduce tube
life.
• Ensure the tube is lined up centrally in the track and correctly secured at each clamp.
• Reposition the track over the rotor and fix by slotting the track pin back into the track slot.
Tube re-tensioning
· When using Marprene tubing After the first 30 minutes of running, re-tension the tube in the pumphead
by releasing the sprung track pin and pulling the tubing on the delivery side a little. This is to counteract
the normal stretching that occurs with Marprene which can go unnoticed and result in poor tube life.
Tube removal
· Release the track by disengaging the sprung track pin and withdraw the tubing from the sprung clamps.