Hitachi CHROMASTER 5160, Instruction Manual

Page: 938 / 1022

Table 4-2 Troubleshooting (continued)
No. Symptom Cause Remedy
h. The detergent bottle is
contaminated.
h. Wash the bottle and replace
the detergent.
i. The sample vial or septum is
contaminated.
i. Replace the vial or septum.
j. The sample has evaporated
or deteriorated.
j. Replace the sample.
k. The needle has clogged. k. Clean the needle. Or replace
it.
l. Excessive variation in the
ambient temperature.
l. Select a site where the
temperature variation is
smaller. When an air-
conditioner is used, stop it or
avoid its direct draft.
m. Deaeration of detergent or
mobile phase is inadequate.
m. For the washing solution and
mobile phase, perform online
degassing. Use a degassing
unit.
n. The detergent bottle filter
(solvent filter) has clogged.
n. Wash or replace the solvent
filter.
o. The non-slit septum and the
sealed plastic cap are used.
o. Use the slit septum (refer to
4.1.1).
p. In present use septum has a
hole.
p. Replace it with a new one.
q. The front door (refer to 2-1) is
open during an analysis.
q. Close the front door during an
analysis.
r. The wash pump leaks. r. Check the wash pump
setscrew and retighten if loose.
Make sure the tip of tube is not
deformed or the ferrule is not
crushed.
s. Air bubbles in the wash
pump.
s. Fill it with deaerated wash fluid.
t. The 3-way change valve
leaks.
t. Check the 3-way change valve
setscrew and retighten if loose.
Make sure the tip of tube is not
deformed or the ferrule is not
crushed.
u. The degassing unit leaks. u. Check the degassing unit
setscrew and retighten if loose.
Make sure the tip of tube is not
deformed or the ferrule is not
crushed.
3 Reproducibility
of analytical
result is poor.
v. A wash fluid bottle is installed
in the location lower than the
autosampler (Negative
pressure in the tubing may
cause air bubbles in the
syringe).
v. Install the wash fluid bottle in
the location where higher than
the autosampler.
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