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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
Possible cause
Solution
No power
(Lamps and displays
do not go on when
the power button is
turned on.)
1. Power cable is not
connected.
2. Fuse is blown.
1. Connect power cable to power socket.
2. Replace fuse. (If new fuse blows
soon after replacement, contact agent
for repair.)
Baseline becomes
jagged.
Bubbles are present in
flow cell.
Pass thoroughly degassed eluent through
at flow rate of about 1 mL/min.
While pushing the key 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.
Periodic noises are
generated.
1. Pulsation by pump is large.
2. Existence of bubbles in
the flow cell enlarges
the pulsation by pump.
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 key
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.
No periodic noises are
generated.
1. Insufficient degassing
2. Flow cell is contaminated.
3. Salts separated in the
tubing or flow cell.
4. Column is contaminated.
1. Pass thoroughly degassed eluent.
2. Refer to “ 7-1 flow line cleaning ”.
3. Set key on and pump sufficient
amount of eluent that dissolves the
salts and wash with water.
4. Wash the column or use a new column.
9. Troubleshooting
Purge
Purge
Purge
