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What should I do when the working pressure of the four-column hydraulic press cannot be adjusted?

by:WORLD     2022-10-21
How to solve the problem that the pressure of the four-column hydraulic press cannot be adjusted in the whole process of work? In this article, we discuss the reason why the pressure of the four-column hydraulic press cannot be adjusted:








1. Check whether the cartridge valve and directional valve of the hydraulic system of the four-column hydraulic press are stuck.



2. Find out whether the circuit failure is the main reason why the pressure of the four-column hydraulic press cannot rise under normal circumstances. It is recommended to use a screwdriver to poke the directional valve down to see if it is stuck, and then check whether the indicator light is on when the pressure rises.



3. The electromagnetic relief valve in the four-column hydraulic press system is severely worn, causing overflow and debris, so it can get stuck.



4. The flush valve on the upper part of the cylinder block of the four-column hydraulic press is not opened, so it cannot rise normally.








5. Check whether the hydraulic cylinder is damaged.



6. Whether the four-column hydraulic press system has been adjusted and balanced, and whether the upper table is stuck.



7. The total flow of the hydraulic pump is abnormal.



8. Check whether the working pressure of the hydraulic transmission system of the four-column hydraulic press is normal.



9. The direction valve of the lower chamber of the hydraulic transmission system of the four-column hydraulic press is stuck, causing the hydraulic oil to also enter the upper chamber and the lower chamber.



10. The hydraulic drive system charge valve spool valve is stuck, possibly due to debris or a broken spring.





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