YL Instruments YL9100 HPLC, User Manual

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YL9101 Vacuum Degasser
Y
L9101
Chapter 4. Maintenance
4-1. Filtration of solvent
Be sure to filter solvent by <5
μ
m when specially use buffering solution. Keep filtered solvent in the bottle,
which is cleared from minute particles. When use filtered solvent, which kept more than 1 week, please
filter again before use.
4-2. Caution
1) Do not pressurize the vacuum degasser module. More than 120 kPa pressure will damage degassing
membrane inside. When you put solvent bottles 2 m higher than degasser, the pressure is
approximately 120 kPa. So place the bottles less than 2 m lower.
2) Be sure to prevent from any contamination when you connect or disconnect tubes. Entering fine dust
will reduce degassing efficiency greatly.
3) If you want to increase degassing efficiency, make parallel connection of input port to output port. Do
not connect it by serial way.
4) Can not use YL9101 Vacuum Degasser for output of solvent delivery pump.
4-3. Troubleshooting
1) Error and malfunctioning
Errors of YL9101 Vacuum Degasser are occurred when ……
a) Not approach normal vacuum state 15 minutes after power on.
b) Rapid pressure drops by solvent leak during normal operation.
When above errors occurred, degasser will turn red LED. Open above solvent reservoir and check if
vacuum lines are installed correctly. If you cannot find any thing wrong, please contact our representative
or us. In order to re-start, turn off and wait for more than 5 seconds and turn on.
2) Continuous air bubbling
If air bubbles are continuously happened after turning YL9101 Vacuum Degasser on more than 1 hour,
check if input and output port and valve fitting are completed connected. Do not tighten the screw. Fitting
and joint part can be damaged. If the problem is not solved, please contact our representative or us.
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