Hitachi CHROMASTER 5160, Instruction Manual

Page: 765 / 1022

4
4. TROUBLESHOOTING
Table 4-1 directs troubleshooting of the degassing unit.
If abnormality occurs, reference should be made to this table.
Table 4-1 Troubleshooting of Degassing Unit
No. Symptom Possible Cause Countermeasure
a. Power supply to the pump or
system power supply unit is not
turned on.
a. Turn on power supply to the
pump or system power supply
unit.
1 Monitor lamp
does not light.
b. The power cord is not plugged
in.
b. Connect cords securely on both
main unit side and power supply
side.
a. Aspiration speed is too high. a. Use a flow rate of max. 5 mL/min
for solvent replacement, and
max. 3 mL/min for analysis.
b. Tube joint is loose. b. Tighten the joint adequately with
hand.
c. Solvent filter is clogged. c. Wash the solvent filter.
d. An excessive negative pressure
is caused because of solvent
position.
d. Position the solvent container at
the same height as the
instrument.
2 Bubbles are
discharged
through
outlet.
e. Solvent replacement is
inadequate.
e. Carry out solvent replacement
adequately.
a. Tube joint is loose. a. Tighten the joint adequately with
hand.
b. Solvent filter is clogged. b. Wash the solvent filter.
c. An excessive negative pressure
is caused because of solvent
position.
c. Position the solvent container at
the same height as the
instrument.
3 Liquid does
not flow.
d. Flow path is contaminated or
clogged.
d. Wash the inside of degassing
unit and the tubes adequately.
Particularly, if precipitation of salt
can be presumed, wash
adequately with water, and then
carry out replacement with the
aimed-at solvent.
4 - 1