Dionex ICS-3000 - Installing a Backpressure Coil

9 • EG Service
Doc. 065031-04 1/08 295
9.15 Installing a Backpressure Coil
The EluGen cartridge requires at least 14 MPa (2000 psi) of system backpressure;
this ensures optimal removal of electrolysis gas from the eluent produced by the
cartridge.
During system equilibration, monitor the pressure and verify that it is between 14
and 21 MPa (2000 and 3000 psi). A system backpressure of 16 MPa (2300 psi) is
optimal.
If the backpressure is too low, install a backpressure coil between the injection
valve and the
OUTLET port on the EluGen cartridge. Connect one end of the
backpressure coil to Port P (2) on the injection valve; connect the other end to the
TO INJ VALVE IN - P line.
The EG Ship Kit (P/N 062453) includes four backpressure coils (see Table 9-1)
.
Part Number Backpressure
Coil Description
Flow Rate Approximate
Backpressure Added
053762 4-mm ID 2.0 mL/min 3.5 MPa (500 psi)
1.0 mL/min 1.75 MPa (250 psi)
053763 4-mm ID 2.0 mL/min 7 MPa (1000 psi)
1.0 mL/min 3.5 MPa (500 psi)
053764 2-mm ID 0.50 mL/min 3.5 MPa (500 psi)
0.25 mL/min 1.75 MPa (250 psi)
053765 2-mm ID 0.50 mL/min 7 MPa (1000 psi)
0.25 mL/min 3.5 MPa (500 psi)
Table 9-1. Backpressure Coils