Maintenance and Troubleshooting
ProStar 363 Fluorescence Detector
69
Leakage of the Flow Cell
It is important to check that the flow cell does not leak before
collecting analytical data. This check can be performed by
monitoring the flow for a few seconds. If the cell leaks, stop the
pump immediately. Use the following procedure to remedy the
leak:
1. Using the pump, feed liquid to check if the flow through the
cell is normal (e.g., does the fluid exit the cell and the drain
tube to the waste receptacle).
2. If liquid does not come out of the outlet tube, the tube is
clogged. Replace the outlet tube with a new one.
3. If leakage occurs and liquid comes out of the outlet tube
normally, it is possible that the upper nipple may not be
securely tightened. Ensure that the upper nipple is finger
tight and then secure it using the wrench that is provided
(turn it through approximately 10° to 20°).
4. Remove all liquid on the outside of the flow cell and inside
the flow cell compartment.
5. Before replacing the flow cell, pump the mobile phase
through the flow cell to make sure that the problem has been
remedied.
NOTE 1:
It is important to check the outlet tube of the flow cell first. If the upper
fitting is loose and it is retightened with the wrench without checking the
outlet tube, the flow cell may be damaged or broken when the fluid is
pumped through the cell.
NOTE 2:
If leakage is found in the sample chamber or on the optical base in it,
remove liquid thoroughly and clean with a cloth moistened with water.
If liquid comes out of the drain port located at the lower right of
the instrument during measurement, stop the pump immediately
and turn off the Power switch. Then, follow steps (1) to (5)
above.
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