Hitachi CHROMASTER 5160, Instruction Manual

Page: 131 / 1022

4 - 15
4.4 Maintenance
4.4.1 Fluctuation, Noise, and Drift of Baseline
D
2
lamp
W lamp
Deterioration,
Life
Turn off the power and wait for 10 minutes. Turn on the power. If Peak or
Noise level is high as shown in the symptom figures, the life of the lamp is
the cause. If it is low, it can be used. Substitute the liquid for the inside of
Cell, check the baseline. Is the Peak abnormal? Is the Noise level
abnormal? *Guaranteed life of lamp: D
2
lamp: 1,000 hours
W lamp: 1,000 hours
Yes
No OK
Replace the D
2
lamp.
Replace the W lamp.
(See the instruction manual for the detector.)
Cell
Contamination
Bubbles
Check the inside of the Cell visually.
Is the Cell dirty?
Check the inside of the Cell visually for bubbles.
Are there any bubbles?
Yes
No
OK
Clean.
(See the instruction manual for the detector.)
Leak from Flow
path system
Pump
Connection of
Flow path
Detector
Check leak from Pump visually. Is it leaking?
Note: Life of Pump seal is 4 months.
Check leak from all the pushing screws visually.
Are they leaking?
Check leak from Cell visually.
Is it leaking?
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
OK
Purge.
(See the instruction manual for the detector.)
OK
OK
OK
OK
OK
Replace the seal. (See 5.3.)
Tighten the pushing screws.
Disassemble the Cell and clean.
(See the instruction manual for the detecto
r.)
See 4.4.2 Abnormal Pressure.
Replace the Drain tube.
(Inside diameter: 0.33 mm, length: 2 m)
Valve, etc.
Flow path
system of Pump
Drain tube
Inside diameter of
Length of Drain tube
Vibration Environment
Is there abnormal high pressure or abnormal fluctuation?
Is the tube a specified one?
No vibration from other instruments.
See "Leak from Flow path system" above.
Substitute the solvent for the inside of Flow path system completely.
Is substitution of solvent for the inside of the Flow path system enough?
Leak from Flow
path system
Pump
Connection of Flow path
Detector
Substitution of Flow
path system
Flow path system
(Column)
Environment
Vibration of Room temperature
Wind
Keep the vibration of room temperature within 5

C.
Prevent direct air-currents to the Column and Detector.
Cell
Contamination of Cell See "Cell" above.
Life, Deterioration See "D
2
lamp, W lamp" above.
D
2
lamp
W lamp
Column
Contamination,
deterioration of Filler
Remove the Column. Connect the Pump and Detector to check
the baseline. Is the drift large?
Unstable
temperature
Column
oven
Wait until the temperature becomes stable.
Yes
No
Replace the Column.
OK
Fluctuation, Noise of Baseline
Fluctuation, Noise of Baseline
Fluctuation, Noise of Baseline
Drift of Baseline
Symptom Check position Possible cause Check Result Remedy