Programming; Minimum Modifier Pressure Setting - Teledyne SyriXus 65x Installation And Operation Manual

6.2 Programming

6.2.1 Minimum Modifier
Pressure Setting
EAR99 Technology Subject to Restrictions Contained on the Cover Page
SyriXus Series Pumps Installation and Operation Guide
When pump B needs refilling, it must first be placed under inde-
pendent control, as you must run it to return 5-10 mL of modifier back
through the valve to be sure that the cylinder is free of air.
To properly equilibrate the pumps, they both must be delivering
fluid.
When preparing your system for modifier operation, if you are con-
necting pump A to a CO
tubing and appropriate CO
available from your CO
Once the pressure has been zeroed and the pumps are filled, you are
ready to set up your modifier addition parameters. You will need to
place the pumps in Modifier Addition Mode, set the pressure limits
(under the limits option on the main menu) and designate the percent
of modifier (found under % pump on the run screen) to be added. If
your modifier boils at 3.5 bar at room temperature, you may want to
increase the minimum pressure for pump B to prevent vapor (the
default minimum pressure is 3.5 bar).
Before operation in Modifier Addition Mode, zero and fill the pumps
under Independent Control/Constant Pressure Mode.
Once the pumps are ready, place them in Modifier Addition Mode:
Press > (A) >
MENU MORE
(5).
MODIFIER
The default setting for the minimum modifier pump pressure is 50 psi
(3.5 bar). This can be changed to a value appropriate for the type of
modifier being used.
If there is no need to change minimum pressure, press
(D) three times to return to the main menu. The screen will display
the words
PRESSURE MODIFIER
The minimum pressure must be below the system minimum pres-
sure or the pump B outlet valve must be closed whenever the sys-
tem pressure is below the MIN MOD pressure.
To change the minimum pressure: Press
Section 6 Modifier Addition
NOTE
tank, you will need to use stainless steel
2
connecting fittings. These parts should be
2
provider.
2
- (4), and select
MULTI PUMP
.
NOTE
MIN MOD PRESS
CONTIN
PREVIOUS
(B).
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