System Pressure Abnormally Low - Agilent Technologies 1100 Series Service Manual

System Pressure Abnormally Low

The current system pressure is significantly below the typical system pressure
produced by this method with this column.
Table 6 System Pressure Abnormally Low: Possible causes and actions
Possible Causes
Leaks somewhere in the
system
Solvent channels are not
correctly purged. %Ripple
might also be too high
Dirty solvent inlet filters
Solvent intake is being
restricted, %Ripple might
also be too high
1100 Series Nano Pump Service Manual
Suggested Actions
• Use a flashlight and absorbent tissue to search
for leaks throughout the system.
• Perform a 4-minute purge at 2500 µl/min for
each solvent channel.
• Clean or replace the solvent inlet filters.
Troubleshooting and Test Functions
Notes
At very low flow rates, a leak may
never accumulate enough liquid to
trigger the module leak sensors. Low
flow rate leaks are also very hard to
see.
This is especially likely if the system
has been unused for more than one
day.
To minimize this problem, prefilter
the mobile phase, and take
precautions against algae formation
in the water.
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