How to disassemble an ACQUITY QDa - WKB244388

OBJECTIVE or GOAL

Shut down and disassemble a QDa detector for shipment to the repair center.

ENVIRONMENT

QDa

PROCEDURE

Close the control software and power-off the QDa. Wait a few minutes until the turbo molecular pump stops completely.
Close the Nitrogen supply.
Disconnect the QDa from the fluidics path and uninstall the probe.
Remove the drain valve connection.
- If you have a QDa with an external drain valve (serial number starts with KAA or KAB):
  - Remove the holding screw and the valve cover:
  - Remove the tube from the liquid drain port and from the source exhaust connection.
    - Reinstall the valve cover and the holding screw.
- If you have the integrated valve QDa version:
  - Remove the Elbow plug from the valve connector. (Remember to ship the elbow plug with the QDa.)
Unplug and mark any cables (Ethernet, signal, I/O, events) from the module rear.
- For a QDa Standard, unplug the connections listed below:
  1. Ethernet
  2. Nitrogen supply tubing
  3. Power cord
  4. Waste bottle solenoid control
  5. Diaphragm pump exhaust
  6. Event cable
- For a QDa Performance, unplug the connections listed below:
  1. Backing pump control
  2. Ethernet port
  3. I/O signal connector
  4. Vacuum pump tubing
  5. Nitrogen inlet
  6. Waste bottle solenoid control
  7. Power cord
- For instruments with an external drain assembly (serial number starts with KAA or KAB), on the rear, disconnect the drain tubing from the 4-mm bulkhead fitting.
Move the module to a suitable box for shipment. (If a box is not available, ask your local Waters office.)
Note the dimensions and weight of the module to choose the appropriate box:
Fill and sign the latest revision of the H&S module provided by Waters.
Attach it to the box and send a PDF copy to the local Waters office.
The Waters office will contact you to arrange the shipment.

ADDITIONAL INFORMATION

To reinstall the module, attach all of the cables and tubes that were removed.

id244388, QDA