3 • Operation and Maintenance
Doc. 031879-01 3/03 3-7
• Dionex strongly recommends vacuum degassing all eluents. This
helps prevent bubbles, caused by outgassing, from forming in the
pump heads and the detector flow cell.
• The optional vacuum degas assembly provides programmable, online
degassing. The degas assembly must be installed in the ICS-1000 at
the factory. If the ICS-1000 does not contain a degas assembly,
manually degas eluents daily (following the instructions below) and
store it in pressurized reservoirs.
Manual Degassing of Eluent
1. Prepare the eluent required for the application and pour it into a
vacuum flask
1. Pour the deionized water into a vacuum flask
2. Attach the flask to a vacuum pump or water aspirator.
3. Vacuum degas the eluent deionized water for 5 to 10 minutes by
shaking or sonication.
4. Remove the flask from the vacuum. Do not allow water to flow
from the aspirator back into the flask.
5. Pour the degassed eluent deionized water into a pressurizable
reservoir. Do not shake the eluent.
6. Install an end-line filter on the eluent deionized water line (see
Section 3.4.3
).
7. Pressurize the reservoir (see Section B.20
).
3.4.3 Filter the Eluent
Filtering removes small particulates in the eluent that may contaminate
the pump check valves and cause erratic flow rates or loss of prime. An
end-line filter (P/N 045987) is provided in the ICS-1000 Ship Kit
(P/N 057905) for this purpose.
Install the end-line filter on the end of the eluent line, inside the reservoir.
Verify that the end of the filter extends to the bottom of the reservoir and
that the filter is submerged in eluent. This prevents air from being drawn
through the lines. Refer to the Pressurizable Reservoir Installation
Instructions for details.
To Next Page
Loading...
