Watson-Marlow 501CC - Manual (Page 7)

7
501RLC Installation. Simplex (single pumphead) units and duplex (twin pumphead) units
Isolate motor from mains supply.
Fit the track in any one of three orientations, over the drive shaft and locating boss. Secure the track with the four locating screws.
Ensure the drive shaft is degreased before locating the rotor onto the shaft via the split collet. Rotate the rotor until its guide rollers are
aligned flush to the front edge of the track. Tighten the rotor screw to a torque of 3Nm to prevent the collet slipping during operation.
Swing in the crank handle.
To reposition the track, 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. Remove the four track locating screws, and pull the track clear. Rotate the track to its
new position and tighten the track locating screws.
Photographs show duplex pumps
501RLC Tube loading simplex (single pumphead) units)
Isolate pump from mains supply. 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 systems.
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. Note: For units with mechanical variators follow the Duplex tube loading procedure.
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.
The 501RLC 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.
After the pump has been started, open the delivery clamp for a short time, so that the tube can find its natural length.