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No.
Symptom
4
Carryover
occurs.
5
No peak is
observed.
Peak is small.
Table 6-1 Troubleshooting (continued)
Cause
a. The flow path is
contaminated.
b. The injection port seal leaks.
The injection port is loose.
c. The detergent bottle is
contaminated.
d. The sample vial or septum is
contaminated.
e. The tip of need is deformed or
clogged.
f. The detergent in the rinse
port is contaminated.
g. Liquid is trapped in a tube
joint.
h. The needle is contaminated.
i. The needle joint is
contaminated.
j. Column performance is poor.
k. The vial detection lever is
contaminated (due to sample
vial).
l. Lifetime of the injection valve.
a. An insufficient sample volume
is used.
b. The injection port leaks.
c. The flow path has clogged.
d. Column performance is poor.
e. The detector or data
processor is faulty.
f. The tip of needle is deformed.
g. The needle has clogged.
h. The tip of needle is in close
contact with sample
container.
i. The sample vial is sealed (at
a negative pressure when
sipping sample).
j. The sample is viscous.
6 - 3
Remedy
a. Wash the flow path.
b. Check the lock nut and retighten
if loose. Or replace the seal.
c. Wash the bottle and replace the
detergent.
d. Replace the vial or septum.
e. Replace the needle.
f. Clean the rinse port (refer to
5.2.8).
g. Make sure the tube tip is not
deformed and the ferrule is not
crushed. After washing, fasten
the tube again.
Or replace the tubing parts as a
set.
h. Increase the number of WASH
times
i. Remove the needle and wash the
joint. Then, reconnect the needle
(refer to 5.3.5).
j. Wash or replace the column.
k. Attach a cap to the sample vial.
Wash the vial detection lever.
l. Exchange the injection valve.
a. Increase the sample volume.
b. Check the lock nut and retighten
if loose. Or replace the seal.
c. Replace the tubing.
d. Wash or replace the column.
e. Make sure operation is
appropriate. Then, replace the
detector or data processor with a
new one.
f. Replace the needle.
g. Clean the needle. Or replace the
needle, container or septum.
h. Correct the Z coordinate in rack
parameters. Replace the sample
container.
i. Use a slit septum. Slow syringe
speed
j. Slow syringe speed. Or dilute the
sample.
6.1.1
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