PerkinElmer OilExpress 4, User Manual

Page: 74 / 152

74 . OilExpress 4 System User's Guide
Priming the System
The system liquid in the fluid lines functions as the hydraulic fluid for the system. Air in the
lines can affect accurate dispensing of samples and flushing. Refer to
Appendix 3: Liquid
Handling on page 148 for more information about liquid handling in the OilExpress 4 System.
We recommend that you prime the system once a day (before collecting data), or whenever
you observe air in the fluid lines.
Each time you start an analysis (a batch, system check or pathlength calibration) an
Initialization dialog is displayed (Figure 43), which includes the option
Prime autosampler
on initialization
. Inspect the syringes and tubing to the VersaTips for any air bubbles and, if
required, select the option to prime the system.
NOTE: This option will be selected by default the first time an analysis is run after starting
the OilExpress 4 software application.
Figure 43 Batch Initialization dialog showing Prime option
During the prime, each syringe is twice filled with system liquid, which is dispensed via the fill
cup through the fluid lines. Each syringe is then filled with a smaller volume of system liquid,
which is used to fill the injection station fill cup. The corresponding VersaTip is then lowered
into the fill cup and cleaned. This procedure takes approximately two minutes in total.
NOTE: During priming, check all tubing, syringes and connections for leaks, particularly after
any maintenance procedures. Persistent air bubbles, or system liquid dripping from
tips, are indicative of leaks.