Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 156

UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Message
Calibration procedure failed.
Cannot build up and hold
pressure.
Can't do this when the flow is
on.
Can't reset pressure sensor.
Pressure is not constant.
Can't reset pressure sensor.
Pressure is out of range.
Can't start pump while alarm
is on.
Cannot deliver desired flow
at this pressure
Cannot deliver flow.
Something may be clogged.
Cannot pressurize system due
to inlet valve failure or air in
the system.
—or—
Cannot pressurize (x) block
due to open purge or inlet
valve failure or air in system.
Page 148
Remedial Action
The message appears when you performed the CalibrateWP
command from Chromeleon and calibration failed.
Possible causes are:
- The purge valves are open. Close the valves.
- Check that the fitting plug is installed correctly.
- There may be a leak in the system. Find and eliminate the source
for the leak and tighten leaking connections if necessary.
Afterward, perform the command again.
You tried to perform a self test for the pump although the flow rate
was not yet down to zero.
Set the pump flow rate to 0 and repeat the command.
The pump pressure is not down to zero during the self test.
Wait until the pressure is down and repeat the test.
Verify that the cable for the system pressure transducer is properly
connected to the P-Sys connector for the loading pump on the interior
front panel.
Open and close the purge valve if necessary to reduce the pressure.
The pump pressure is not down to zero during the self test. Wait until
the pressure is down and repeat the test. Verify that the cable for the
system pressure transducer is properly connected to the P-Sys
connector for the loading pump on the interior front panel. Open and
close the purge valve if necessary to reduce the pressure.
An alarm has occurred, for example, a leak alarm. You can restart the
pump flow only after having acknowledged the alarm, for example,
by performing the AlarmOff command in Chromeleon.
The internal limit for the primary pressure has been reached, resulting
in that the set flow rate could not be delivered for a short period. If
the problem occurs during an analysis, shifts in retention times may
be observed.
The problem appears when the column pressure increases to a level at
which the pump can no longer deliver the set flow rate. Verify that
the column pressure is within the normal range. If it is, reduce the
flow rate to avoid the problem.
For more information, see section 5.5.2 (→ page 110).
During solvent calibration with the ProFlow flow meter, clogging
was detected in the flow path. Purge the pump (→ page 72).
(where x specifies left or right block)
Pressure buildup failed. Possible causes are:
- There are air bubbles in the system. Purge the pump (→ page 72).
- The inlet valve is defective. Replace the valve cartridge
(→ page 182).
- The solvent reservoir is empty. Fill the reservoir. Purge the pump
(→ page 73).
Operating Instructions