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How to clean the ACQUITY UPLC check valve - WKB85138

Article number: 85138

OBJECTIVE or GOAL

  • What to do if a check valve clog is suspected due to abnormal back pressure

ENVIRONMENT

  • ACQUITY UPLC H-Class
  • ACQUITY UPLC I-Class

PROCEDURE

1. Remove the primary check valve from the pump head.

2. Submerge the removed check valve in methanol and sonicate it.

3. Then submerge the check valve in water and sonicate it.

4. After that, submerge the check valve in methanol and sonicate it.

5. Dry the check valve washed with methanol with nitrogen and install it to the pump head.

6. If the problem cannot be solved with the primary check valve, perform the same steps for the accumulator check valve as well.

 

 

ADDITIONAL INFORMATION

Video - How to replace the primary check valve i2V

Video - How to replace the accumulator check valve

 

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