Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 163

Message
Purge pressure limit
exceeded
Quiescent current too large
Reducing flow didn't reduce
the pressure. Something may
be clogged.
Right valve no head found.
Right valve moving to
position timeout.
Right valve position error.
Right valve header with
wrong number of ports
configured
Right equilibration piston
drive sensor remains dark
Right working piston drive
sensor remains dark
Operating Instructions
Remedial Action
During the purge cycle, a pressure of more than 5 MPa built up.
If the message appears during the purge cycle for a pump head
Verify that the purge valve for the pump head is open. If it is not,
open the purge valve to reduce the pressure.
If the message appears during the purge cycle for the flow meter
Be sure that the correct capillary is connected to the flow meter outlet
(nanoViper capillary, 0.25 x 155 mm I.D. x L, MP35N, e.g., from the
accessories kit of the module). Verify that the other end of the
capillary is open.
In any case, check the flow path for indications of blockage (also, see
"Upper pressure limit exceeded").
The motor current is too high when the loading pump stops. Turn the
pump off and on again by pressing the power switch on the rear of the
module.
During solvent calibration with the ProFlow flow meter, clogging
was detected in the flow path. Purge the pump (→ page 72).
While the Catch Head command has been performed, no valve has
been found. Repeat the command and push the valve onto the
actuator (→ page 78).
The right valve did not reach the specified position within a certain
time. There may be no valve installed or the valve is not configured
properly.
Check and change the valve type in Chromeleon or on the oven
display (→ page 50 or page 106) if required and switch the valve
again. Contact Service if the message appears again.
The right valve did not reach the specified position. The valve may
not be configured correctly or may be blocked.
Check and change the valve type in Chromeleon or on the oven
display (→ page 50 or page 106) if required, verify that the valve is
not blocked, and switch the valve again.
Contact Service if the message appears again.
When being switched, the right valve recognized that the number of
ports configured for the valve does not match the actual number of
valve ports. Check and change the setting as necessary (→ page 79).
Drive initialization failed for the right equilibration piston of the NC
pump.
Turn the module off and on again by pressing the power switch on
the rear of the module. Contact Service if the message appears again.
Drive initialization failed for the right working piston of the NC
pump.
Turn the module off and on again by pressing the power switch on
the rear of the module. Contact Service if the message appears again.
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page 155