Shimadzu Spd20a: User Manual

When setting up your SPD-20A, the manual lists three non-negotiable steps:

| Component | Frequency | Action | |-----------|-----------|--------| | Flow cell | Monthly (or when noise increases) | Flush with methanol/water. Remove and clean with 50% nitric acid if contaminated. | | Deuterium lamp | 2000 hours typical | Replace when energy < 800 counts or baseline unstable. | | System check | Weekly | Verify wavelength accuracy using holmium oxide filter (optional accessory). |

These are the top questions that the Shimadzu SPD-20A user manual answers directly.

Q1: Can I use the SPD-20A without a system controller? shimadzu spd20a user manual

Q2: How do I reset the lamp hours after replacement?

Q3: My baseline drifts upward during gradient elution. Is this normal?

Q4: Can the SPD-20A interface with non-Shimadzu software like Chromeleon? When setting up your SPD-20A, the manual lists

The official PDF is available from Shimadzu’s global support portal. Here are trusted sources:

  • Shimadzu Science Lab (Asia/Europe):
  • Manual Libraries:

    • Warning: Avoid sites requiring credit card information. Shimadzu provides user manuals for free as PDFs.

    | Symptom | Probable Cause | Corrective Action | |---------|----------------|--------------------| | High baseline noise | Air bubbles in cell | Flush with degassed mobile phase or remove cell and rinse. | | Negative peaks | Sample absorbs less than mobile phase at set wavelength | Change wavelength or check mobile phase UV cutoff. | | Lamp fails to ignite | Lamp expired or power supply issue | Check lamp hours; replace D2 lamp. | | No signal at high sensitivity | Flow cell window dirty | Clean cell with 1M HNO₃, then water, then methanol. | | Wavelength error | Stepper motor failure or filter stuck | Run Wavelength Calibration from service menu (qualified personnel only). | Q2: How do I reset the lamp hours after replacement

    | Symptom | Likely Cause | Manual Section | |------------------------|-------------------------|-----------------------| | Lamp fails to ignite | End of lamp life | 5.2 – Lamp Replacement| | High baseline noise | Air bubbles in cell | 4.3 – Purging the Cell| | Negative peaks | Wavelength wrong / Ref cell dirty | 3.5 – Wavelength Setup | | Leak error persistent | Flow cell window cracked| 5.4 – Cell Replacement| | No communication | IP address conflict | 2.7 – LAN Configuration|

    If your SPD-20A is connected via CBM-20A to LabSolutions, the software includes a "Module Help" menu. Click on the SPD-20A icon → "Manual" to open context-sensitive pages for error codes.

    The manual divides maintenance into three categories. Ignoring these voids your warranty.

    | Component | Frequency | Manual Section | Critical Warning | |-------------------|--------------------------------|----------------|------------------------------------------------------| | Flow cell | Weekly | 4.2 | Never touch the quartz lens with bare fingers. | | Deuterium lamp | Every 2000 hours or low energy | 4.3 | Allow lamp to cool 30 min before replacement. | | Cell gaskets | Annually or after 5000 hrs | 4.2.3 | Overtightening cracks the cell block. Torque to 2 Nm.| | Optical unit | As needed (dusty labs) | 4.4 | Only trained service engineers should open this. |