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1.6.6 Overpressure
Conditions
EAR99 Technology Technology Subject to Restrictions Contained on the Cover Page
Note
The pressure limit is 200 psi, if using the solid-load car-
tridge loading method.
If the pressure transducers are properly functioning and an over-
pressure condition is detected, the system will respond
depending on the severity of overpressure.
• If the blockage is severe and the pressure reading is
75 psi over the pressure limit, the system stops immedi-
ately.
• If the pressure exceeds the limit by less than 75 psi, the
system drops the flow rate to 50% of the programmed
flow rate.
• If after 5 seconds the limit is still exceeded, the flow is
reduced by another 50%.
· In either of these conditions, the system will continue
the separation.
• If the blockage resolves due to increased gradient
strength and the pressure drops below 30% of the
pressure limit, the flow rate will increase stepwise to the
original flow rate.
• If the two flow rate reductions of 50% are insufficient to
resolve an overpressure condition, the system will stop
the separation to allow the user to take steps to resolve
the blockage.
CombiFlash NextGen Systems
Section 1 Introduction
1-17
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