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Dionex Reagent-Free Controller
3.
Operation
3.1
Turning On the Power
Press the power switch on the Dionex RFC rear panel (see Figure 4) to
turn on the power. These are the conditions at startup:
•
The Dionex RFC briefly displays the Dionex RFC model and version
numbers and then the default status screen appears.
•
All settings that were in effect when the Dionex RFC power was
turned off are restored.
•
The Dionex RFC begins ramping the power to each selected device at
the maximum rate possible until the set point is reached. The
maximum rate at which the suppressor current can increase is
100 mA in 10 seconds; the maximum rate at which the EGC
concentration can increase is 100 mM in 10 seconds. The default
status screen (see Section 3.2) displays the suppressor current and
EGC concentration values as they count up.
In some cases, the Dionex RFC is not able to ramp up to the set point
at the maximum rate. This occurs because the fast increase in current
causes the Dionex RFC to reach its maximum voltage limits.
Ramping then slows to allow the voltage to decrease. A new
suppressor may take longer to reach its set point than an older one.
Conversely, a new EGC may reach its set point more quickly than an
older one.
3.2
Viewing Eluent Generator and Suppressor Status
The default status screen (see Figure 7) displays after the power is turned
on. It also displays automatically if there is no input from the front panel
for 2 minutes (and the Dionex RFC is not in edit mode). The default
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