November 16, 2016, 715004521 Rev. C
Page 21
2 Preparing for operation
For normal-phase separations, you can specify pressures of 10,342 to 41, 369 kPA, (103 to
413 bar, 1500 to 6000 psi) and temperatures of 4º to 90º C.
Perform the tasks in this section to prepare the system for use.
Prerequisite: Make sure you have performed all procedures in the module overview and
maintenance guides in the preparing for operation sections before proceeding.
2.1 Start the system hardware
The system can also include these modules:
•UPC
2
PDA, ELSD or mass spectrometer (such as SQD, QDa, TQD, or Xevo TQ-XS)
• 515 pump and pump controller module or ISM
A workstation computer is required to run the data system software and to configure and control
system functions by means of the console user interface.
2.1.1 Before you power-on the system modules
Verify that all fittings are properly tightened, to prevent leaks. Preventing leaks ensures that the
system maintains adequate pressure, temperature, and sample integrity throughout an analysis.
2.1.1.1 Starting the CO
2
flow
Slowly open the large valve for the CO
2
supply, and inspect the valve fitting for leaks.
2.1.1.2 Inspecting the system for leaks
Leaks can occur at any tubing connection, gasket, or seal. Most often, however, they occur at
tubing connections.
Warning: To avoid serious injury that can result when the CO
2
line is under pressure,
before disconnecting the CO
2
line from either the source or the back panel of the UPC
2
manager, stop the flow of CO
2
from the system, and shut off the valve at the CO
2
supply
(tank or external source).
Warning: To avoid asphyxiation, turn off the large valve at the top of the CO
2
tank, or turn
off the external CO
2
supply.
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