High background conductivity - ERD 500 - ERS 500e - ERS 500 Carbonate - DRS 600 - High background conductivity - ERD 500 - ERS 500e - ERS 500 Carbonate - DRS 600

Procedure

1. Check the Dionex DRS 600 (Legacy Mode), Dionex ERS 500e or Dionex AERS 500 Carbonate current settings. Refer to Calculate the electrical current for the suppressor.
2. Check for eluent flow out of the suppressor ELUENT OUT port.
1. If there is no flow out of the suppressor ELUENT OUT port, make sure that eluent is entering the suppressor at the ELUENT IN port. If there is no flow at this point, trace the eluent flow path backward through the system to find and remove the blockage.
2. If there is flow into the suppressor but not out, and there are no visible leaks from the rear seam of the suppressor, a break in the suppressor seal is probably allowing eluent to leak into the regenerant chambers. If this is the case, then the suppressor should be replaced. The suppressor is sealed during manufacture; attempting to open it will destroy it.

3. DANGER

   Do not attempt to disassemble the Dionex DRS 600, Dionex ERS 500e, or Dionex AERS 500 Carbonate.

1. If there is flow from the ELUENT OUT port, but no eluent suppression, the membrane may have been contaminated. Try to restore system performance by cleaning the membrane (see Suppressor electrolytic regeneration..
3. Remake the eluent to be sure that the concentration is correct. Be sure that chemicals of the required purity were used to make the eluent (see Chemical purity requirements). If the eluent concentration is high, the suppressor may not be set up to suppress the high concentration resulting in high background conductivity.
4. Refer to the tablers in Current settings for more information.