Note: Due to the different ambient temperature, the pump core can reach the maximum lubricating oil output after 10 minutes of operation. <br>There are air bubbles in the lubricating oil. <br>Loosen the outlet fitting on the safety valve. <br>There must be no air bubbles in the lubricating oil. <br>Use unqualified lubricating oil to <br>replace the lubricating oil. The <br>suction hole of the pump core is blocked. <br>Remove the pump core, check whether there is any foreign particles in the suction hole, and remove it. <br>The pump piston is worn out. <br>Replace the pump core. The <br>one-way valve of the pump core is faulty or blocked. <br>Replace the pump core.
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