Waters 1500-Series, Руководство оператора

Страница: 47 / 188

Connecting pump inlet and outlet lines 2-15
• Circular tubing cutter (part number WAT022384) or knife-edge file
• Needle-nose pliers (two pairs if cutting tubing with a knife-edge file)
• 5/16-inch open-end wrench (part number WAT022527 (startup kit)
Cutting the tubing to length
To cut the pump outlet tubing you will need:
1. Measure the length of stainless steel tubing required to connect the
pump outlet to the injector or other instrument.
2. Use a knife-edge file to scribe the circumference of the tubing at the
desired break.
Tip:
Whenever possible, use a circular tubing cutter instead of the
knife-edge file to obtain a clean, square cut.
3. Grasp the tubing on both sides of the scribe mark with cloth-covered
pliers (to prevent marring of the tube surface) and gently work the tube
back and forth until it snaps.
Requirement:
Ensure that the break is square and free of burrs.
Attaching the compression fittings to the tubing
To attach the fittings:
1. Slide a compression screw onto one end of the tubing, and then slide a
ferrule onto the tubing, with the large end of the taper toward the screw,
as shown below.
Standard ferrule and compression screw assembly
2. While firmly pressing the tubing into the pump outlet or other system
component, finger-tighten the compression screw.
Compression screw
Ferrule
Smooth, square
Tubing
3-mm tubing extension
end