Issue
How can I troubleshoot an Integrion system when the unit may be experiencing low or decreasing system backpressure?
Environment
Integrion Models:
- 22153-60301
- 22153-60302
- 22153-60303
- 22153-60304
- 22153-60305
- 22153-60306
Resolution
The following table summarizes possible causes why product may have low or decreasing system backpressure and troubleshooting tips to resolve the issue(s):
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Eluent supply depleted
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- Check the eluent reservoir and refill it if needed. Prime the pump before resuming operation.
- Air in eluent line Check the eluent line for air bubbles.
- If air is trapped in the line, replace the end-line filter (P/N 045987).
- Verify that the end of the line extends to the bottom of the reservoir and the filter is submerged in eluent. Prime the pump.
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Eluent insufficiently degassed
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- If the optional eluent degas vacuum pump is installed, verify that the pump is turned on.
- The vacuum pump can be controlled from the pump ePanel in Chromeleon or the mobile app Pump page.
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Loose fitting
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- Check tubing connections throughout the system (including the check valves, injection valves, and columns) and tighten or replace fittings as needed.
- Pump priming valve open
- To close the valve, turn the knob clockwise until closed. Tighten no more than fingertight.
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Column temperature too high
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- Check the temperature setpoint of the column compartment.
- If the compartment is set at the correct temperature and the reading is stable, use an external temperature probe to measure the temperature.
- If the reading does not match the temperature reported by the system, the column compartment heater may need to be replaced. Contact Technical Support for Dionex products for assistance.
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Compartment temperature too high
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- Check the temperature of the detector compartment.
- If the compartment is set at the correct temperature and the reading is stable, use an external temperature probe to measure the temperature.
- If the reading does not match the temperature reported by the system, the compartment heater many need to be replaced.
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Defective pump check valve
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Internal Dionex EGC leak (from membrane barrier)
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- Leakage from the membrane barrier may trip the pump low pressure limit and shut down the pump.
- If all other causes of the low system pressure have been eliminated, replace the Dionex EGC.
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