Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 165

Message
The rear seal leak sensor
detects drops constantly.
The rear seal wash system
has run out of wash solution
The WP calibration could not
finish. Release pressure and
calibrate again right now!
Undock err., open purge
valve
Operating Instructions
Remedial Action
Verify that the pump is installed in a horizontal position and that the
seal wash solution can run properly to the waste.
Remove the detector of the seal wash system (→ page 181). Verify
that the detector seat is dry, for example, by using a lint-free cloth or
tissue.
Inspect the electrodes of the seal wash detector for indications of
contamination. Clean the detector electrodes if required
(→ page 181).
Rear seal washing is enabled and the peristaltic pump is running, but
no liquid reaches the detector of the seal wash system.
Verify that wash solution is present in the seal wash reservoir.
Initiate another Wash cycle manually. To do so, set
RearSealWashPump to Active (→ page 122).
Verify that the seal wash tubing is connected properly (→ Fig. 6,
page 29) and check the tubing for permeability. Replace the seal wash
tubing and the tubing connectors as necessary.
The peristaltic tubing may be blocked or draws air. Replace the
tubing if necessary (→ page 180).
Inspect the rear seal wash tubing for indications of leakage
(→ page 179 ). Replace the seal wash tubing and the tubing
connectors as necessary.
Verify that the lever of the peristaltic pump (→ Fig. 29, page 67) is
not blocked.
Inspect the electrodes of the seal wash detector for indications of
contamination. Clean the detector electrodes if necessary
(→ page 181).
Make sure that the seal wash solution is sufficiently conductive
(→ page 122).
The working pressure transducer calibration failed.
Open and close the purge valve to reduce the pressure (→ page 72).
Check that the fitting plug is installed correctly.
Perform CalibrateWP command again.
The pump pistons are not in the appropriate position for normal
operation (for example, after piston (seal) replacement) or an error
occurred during internal maintenance (→ page 142).
Open the purge valve, perform the Dock Pistons command, and close
the purge valve.
Tip: When the message appears for the loading pump, usually also the
pump block status LED for the loading pump flashes red.
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page 157