1 ► Remove the distilled water container and cover around the foot area of the pipettor unit with
paper towels
2 ► Carefully remove the pinch valve tubing from the fittings on the metal plate while holding a dry
gauze square around the tubing.
3 ► Use the gauze square to absorb liquid comes out of the released tubing.
4 ► Remove the tubing from the pinch valve and discard it.
5 ► Take a new piece of tubing and insert it through the pinch valve. Verify the tubing length is 180
mm. If not, cut the tubing to that length.
6 ► Carefully slide the ends of the tubing over each of the fittings. In the photo on the previous page,
one set of fittings is shown with solid red circles and the other pair of fittings is shown with
dotted red circles. Verify that each tubing end is connected to the appropriate fitting according
to the diagram shown below.
Figure