Dionex ICS-3000 - Page 209

8 • DP/SP Troubleshooting
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This error occurs if the DP/SP pressure falls below the low pressure limit
specified in Chromeleon or Chromeleon Xpress.
To troubleshoot:
1. The eluent supply may be depleted. Refill any empty eluent reservoirs.
2. Check all eluent lines for air bubbles. If air is trapped in a line, replace the
end-line filter (P/N 045987). See Section 4.4
for instructions. Verify that
the end of each filter extends to the bottom of the reservoir and is
submerged in eluent. Prime the pump (see Section 9.3
).
3. Eluents may be insufficiently degassed. Check the vacuum degassing
module.
4. Check all tubing connections for leaks; tighten loose fitting connections.
5. A check valve may be defective. Replace the check valve cartridges (see
Section 9.4
) and then prime the pump (see Section 9.3).
This error occurs only when the cap on the seal wash reservoir is equipped
with a drop sensor and the sensor does not detect any wash solution when
piston seal washing is activated.
To troubleshoot:
1. Refill the reservoir with wash solution, if necessary. ASTM Type I
(18 megohm-cm) filtered and deionized water is usually appropriate.
2. Verify that the tubing is engaged in the peristaltic pump (see Section 4.5
).
The tubing should not be plugged or crimped. Replace the tubing as
needed (see Section 9.1
).
3. Clean the sensor on the reservoir with water or solvent.
4. Check for leaks at connections throughout the pump module; tighten or
replace any leaking fittings. Replace any tubing that is plugged or
damaged.
Pressure fallen below lower limit.
Rear-seal wash system has run out of wash solution.