Watson Marlow Pumps 504Du, Руководство пользователя

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Tube loading
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 pumphead.
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.
Roller adjustment
The 501RL has a factory set gap of 2.6mm between the rollers and the track and is suitable for tubing having wall thicknesses of between 1.6
and 2.0mm. Adjustment of the gap will be required if tubing having a wall thickness of less than 1.6mm is required. There is an adjusting screw
on each of the two roller arms, and each of these screws will require adjustment. The correct gap is twice the wall thickness less twenty
percent. Correct adjustment is important: over occlusion will reduce tube life; under occlusion will reduce pumping efficiency.
To change the gap setting, turn each adjusting screw clockwise to increase the gap, or anticlockwise to decrease the gap. A full turn changes
the gap by 0.8mm.
To restore the original settings of 2.6mm, turn the adjusting screws until both rollers are just touching the track, then tighten each screw by
three and a quarter turns. The 501RL2 has a factory set gap of 3.8mm between the wall and the track and is suitable for tubing having wall
thickness of between 2.1 and 2.5mm.
Check moving parts of the rotor from time to time for freedom of movement. Lubricate pivot points and rollers occasionally with Teflon
lubricating oil.