Thermo Scientific Accela Open Autosampler Hardware Manual page 105

Table 29. Troubleshooting using symptoms and error messages (Sheet 3 of 5)
Symptom or error message
Syringe not filling properly DLW Actuator/Solenoid not
Thermo Scientific
Possible cause
functioning
Worn out syringe plunger tip
DLW Actuator Control PCB defect If possible, verify the DLW Actuator Holder
DLW Flow Diverter
Fitting replaceable needle
Troubleshooting Using Observed Symptoms or Error Messages
Recommended action
Load PAL Firmware level smaller than 4.0 or
PAL Firmware Object for DLW option onto the
system.
Solvent path is blocked. Prime the system or
inspect it to identify the reason for clogging.
Air bubbles are trapped in the system, caused by
loose connections or tubing not cut square.
Replace syringe plunger. Check if glass barrel is
scratched (damaged). If in doubt, replace the
entire syringe at once.
assembly on another PAL System. If defect is
definite, replace PCB.
Check the Flow Diverter:
• Is the Flow Diverter inserted? Inserted in full
up position?
• Is the solvent flowing freely in the tube?
Check the fixation and seal of the replaceable
syringe needle:
• Is the retaining nut tight?
• Is the PTFE seal installed?
• Is the needle entry free of debris, not
clogged?
• Is the correct needle diameter (gauge 22)
used?
Accela Open Autosampler Hardware Manual
6
Troubleshooting
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