Watson-Marlow 501RL - Manual (Page 7)

Tube loading
Switch off the pump before loading the tube. Unlock and open the hinged
guard and swing out the rotor crank handle until it locks into position.
Select the length of tubing required, noting that approximately 240mm is
required for the track system (measured from the outside faces of the tube
clamps).
Fit one end of the tubing into one of the spring loaded clamps, and then,
whilst rotating the rotor with the crank handle, feed the tubing between the
rollers and the track, aligning it within the rotor tube guides. The tubing must
lie naturally against the track and must not be twisted or stretched.
Fit the other end of the tubing into the second spring loaded clamp, ensuring
that the tubing is not slack in the pumphead, since this can reduce tube life.
Close the crank handle and shut and lock the guard. After the pump has been
started, open the downstream clamp for a short time, so that the tube can find
its natural length.
The 501RL pumphead is fitted with four-position tube clamps, to
accommodate various tube diameters, which can be adjusted by pushing in or
pulling out the bars at the top of the upper clamp and the bottom of the lower
clamp. Set the clamps so that the minimum necessary pressure is applied to
the tubing.
Care and maintenance
If aggressive liquids are spilled on to the pumphead, the head should be
removed and cleaned using a mild solution of detergent and water. Remove
any tubing from the pumphead, and swing out the crank handle to expose the
rotor retaining screw. Turn the screw anticlockwise one turn to release the
collet, and withdraw the rotor from the shaft. Unscrew the track retaining
screw and detach the track from its spigot.
Check moving parts of the rotor regularly for freedom of movement. Lubricate
pivot points and rollers with Teflon lubricating oil. To obtain effective
lubrication of the roller spindle, remove from the pumphead and clean
thoroughly prior to applying RD-105 grease.
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