PerkinElmer OilExpress System, User Manual

Page: 85 / 102

Routine Maintenance and Troubleshooting . 85
Replacing the Tubing
It is important that all tubing is kept clean and free of crimps. Tubing that has become dirty,
blocked or crimped can result in poor accuracy and precision, loss of air gap, or syringe
stalls. Replace the tubing if necessary. Frequency of replacement will be dependent on duty
cycle, reagents and maintenance.
Replacing Reagent and Needle or Cell Tubing
Removing the old reagent tubing
1. Unscrew the connector from the right hand side of the valve (reagent tubing).
2. Pull the tubing clear of the Autosampler.
Installing the new reagent tubing
1. Route the end of the tubing with the fitting through the black grommet hole on the right
panel.
2. Install fitting on the right valve port of the syringe pump.
3. Finger-tighten the fitting.
Removing the old needle tubing
1. Unscrew the connector from the left hand side of the left hand syringe pump.
2. Remove the insulation block from the Z-drive.
3. Pull the tubing from the needle end.
4. Withdraw the tubing from the Z-drive and tubing support.
Installing the new needle tubing
1. Route the end of the tubing with the fitting through the black grommet hole on the right
panel.
2. Install the end of the tubing with the fitting into the left valve port of the left syringe
pump.
3. Route the other end of the tubing through the tubing support and down the Z-drive.
4. Push the end of the tubing over the end of the needle and replace the insulating block
onto the Z-drive.
WARNING
Switch off the Autosampler before replacing any tubing.