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• Exporting Office: 12F, Huaihai Road West, Shanghai, China
• Factory: Picheng World Industrial Park, Danyang City, Jiangsu Province, China
When the four-column hydraulic press is working, it is actually a very common situation that the hydraulic system does not maintain pressure. When the four-column hydraulic press starts to work, the pressure will drop after the pressure rises, mainly due to the following reasons.
1. The main relief valve in the hydraulic system of the four-column hydraulic press is severely worn, resulting in overflow and debris, which are stuck, so the pressure cannot rise at all;
2. The flushing valve on the upper part of the oil cylinder is not opened, so there is a phenomenon that it cannot rise normally;
3. The pump flow is abnormal. If the pump flow and pressure become inversely proportional, it will also cause the hydraulic pressure to fail to rise;
4. The direction valve of the lower chamber of the hydraulic system is stuck, and the oil also enters the upper and lower chambers;
5. If there is a fault in the circuit, the hydraulic pressure will not rise. You should use a screwdriver to poke the small reversing valve to see if it is stuck, and then test whether the indicator light of the rising small valve is on;
6. The spool of the filling valve of the hydraulic system is stuck due to debris or springs, which will also cause the hydraulic pressure to fail to rise;
7. The same will be true if the cartridge valve and reversing valve in the hydraulic system are stuck;
8. Whether the pressure of the hydraulic system of the four-column hydraulic press is normal, whether the cylinder is faulty, etc., will cause the hydraulic pressure to fail to rise normally. This article is from the official website of the manufacturer WORLD Press Machine www.pressmachine-world.com, please indicate the source for reprinting!
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