Regarding the location of the pump head seal replacement maintenance guide in the AKTA protein purifier manual, the exact section isn't directly indicated in the current search results. For the replacement of the pump head seal, it is advisable to seek assistance from professional instrument service providers to ensure proper and safe operation. 匠析生物 specializes in providing integrated solutions for experimental instruments, including repair, maintenance, parts supply, and more, covering brands like Cytiva (the brand of AKTA system), Thermofisher, Waters, Agilent, GE, Beckman, etc. We can offer professional pump head seal replacement services for AKTA protein purifiers, as well as other after-sales services such as instrument leasing, cleaning and maintenance, and application consulting. If you have needs related to AKTA instrument repair or other laboratory instrument services, feel free to contact us for support.