Dionex ICS-90 - 3.5 ICS-90 Operation

3 • Operation and Maintenance
Doc. 031851-05 12/04 3-5
To improve the accuracy of early eluting peak determinations, such as
fluoride, at concentrations below 50 ppb, dilute standards in eluent or
spike the samples with concentrated eluent to minimize the water dip. For
example, spike a 100 mL sample with 1.0 mL of a 100 X eluent
concentrate.
3.5 ICS-90 Operation
3.5.1 Starting Up the ICS-90
1. Make sure the eluent and regenerant reservoirs are filled, the caps are
tightly screwed onto the reservoirs, and the lines connecting the
eluent and regenerant reservoirs to the ICS-90 lines are securely
connected (see Figure 3-1
).
2. Make sure the clean gas inlet line is regulated to between 0.55 and
0.83 MPa (80 and 120 psi), and is connected to the gas inlet of the
ICS-90 air regulator (see Figure 3-1
).
3. Make sure the gas line from the eluent reservoir is connected to the
ICS-90 air regulator outlet line.
4. Make sure the air regulator is adjusted to between 30 and 40 kPa (5
and 6 psi) (see Section 3.3
).
5. Make sure the USB cable is connected to the USB port on the ICS-90
rear panel. See Section B.4
for installation instructions.
6. Press the power switch on the ICS-90 rear panel (see Figure 2-2
) to
turn on the system power.
7. These are the conditions at power-up:
• The pump is off.
• The injection valve is in the Load position.
• The DS5 is reading its current value.