Waters 2998, Operator'S Manual

Page: 44 / 122

2-18 Setting Up the Detector
8. Slide the 3/8-inch OD Tygon
®
tubing, supplied in the startup kit, over
the barbed drain fitting located on the drip tray and route it to a suitable
waste container.
Making the gas supply connection
The detector can be connected to a nitrogen source to improve operation at
lower wavelengths.
Requirement:
Only use a constant supply 28 to 41 kPa (.28 to .41 bar, 4 to
6 psi) of dry, oil-free, filtered nitrogen.
To make the gas supply connection:
1. Connect one end of the plastic tubing to the nitrogen source.
Tip:
The nitrogen source may require an adapter in order to fit the
plastic tubing.
2. Connect the other end of the nitrogen fitting on the rear panel of the
detector.
Starting up and shutting down the detector
The detector startup procedure takes less than one minute. Once completed,
you should allow the detector to warm up for at least one hour before running
an analysis. Follow the procedures in this section to ensure reliable detector
performance.
Warning:
Do not use gases that would allow the combustion of
combustible solvents. Always use inert gases.
Warning:
• Always observe Good Laboratory Practices when you use this
equipment and when you work with solvents and test solutions.
Know the chemical and physical properties of the solvents and test
solutions you use. See the Material Safety Data Sheet for each
solvent and test solution in use.
• Using incompatible solvents can cause severe damage to the
instrument and injury to the operator.