Table of Contents
Advertisement
9. Troubleshooting
If any abnormality occurs, try to solve the problem in accordance with the
Instructions below.
Should the problem not be corrected even after taking the corrective actions
below, contact the agent from whom you purchased the detector.
Problem
No power
(Lamps and displays
do not go on when
the power button is
turned on.)
Baseline becomes
jagged.
Periodic noises are
generated.
No periodic noises are
generated.
Possible cause
1. Power cable is not
connected.
2. Fuse is blown.
Bubbles are present in
flow cell.
1. Pulsation by pump is large.
2. Existence of bubbles in
the flow cell enlarges
the pulsation by pump.
1. Insufficient degassing
2. Flow cell is contaminated.
3. Salts separated in the
tubing or flow cell.
4. Column is contaminated.
- 24 -
Solution
1. Connect power cable to power socket.
2. Replace fuse. (If new fuse blows
soon after replacement, contact agent
for repair.)
Pass thoroughly degassed eluent through
at flow rate of about 1 mL/min.
While pushing the
Purge
into ON and OFF positions for sufficient
period of time
(until the baseline stabilizes).
If an aqueous eluent is in use and the
baseline does not stabilize even after
passing the degassed eluent for more
than one hour, it will be effective to
perform one passage of methanol.
1. Install device, such as damper and
resistance pipe to eliminate pulsation,
close to delivery side of pump.
2. Pass thoroughly degassed eluent
through at flow rate of about 1 mL/min.
While pushing the
Purge
repeatedly into ON and OFF positions
for sufficient period of time
(until the baseline stabilizes).
If an aqueous eluent is in use and the
baseline does not stabilize even after
passing the degassed eluent for more
than one hour, it will be effective to
perform one passage of methanol.
1. Pass thoroughly degassed eluent.
2. Refer to " 7-1 flow line cleaning ".
3. Set
key on and pump sufficient
Purge
amount of eluent that dissolves the
salts and wash with water.
4. Wash the column or use a new column.
key repeatedly
key
Advertisement
Table of Contents
