1. Inspection and debugging
1. Before the oil pump test, add clean mechanical oil or vegetable oil to the oil tank, and press the handle up and down to see if the piston of the oil press rises. If the piston does not rise or the handle does not exert effort when pressing, check the valves of the fuel tank and remove the air in the pipeline.
2. Carry out the pressure test of the whole machine. The pressure used in the test is 1.25 times the working pressure. Check that the piston extends to a large working stroke and press for 15 minutes. The pressure gauge reading should not exceed 4% of the test pressure. There should be no leakage in all oil circuits; after all the pressure is removed, the pressure gauge pointer returns to the “0” position, the parts should be undamaged, the tie rods should not be significantly deformed, and the moving parts should not be stuck.
3. Carry out reliability test on the safety valve, adjust the safety valve to the working pressure (upper left 5, lower left 1) MPa, test 5 times continuously, the needle valve opens and closes sensitively, and the pressure gauge reading should not be lower than each time the valve is tripped Rated working pressure.
2. Maintenance
1. The pressure oil in the oil pump should be filtered, and the concentration should not be too high. It is easy to use rapeseed oil, soybean oil and peanut oil. It is forbidden to use gasoline, kerosene and other flammable fuels.
2. Keep the fuel tank clean. Clean the fuel tank and replace it with new oil every 3 months or so. Impurities in the oil will wear the oil pump and cause blockage of the oil circuit, affecting the operation of the oil press.
3. The connecting pin between the handle and the oil pump should be lubricated frequently to reduce wear.
4. The screw oil press should be installed indoors to avoid wind and rain in the open air, causing rust and cooking oil pollution.
5. When parked for a long time, the machine should be cleaned, oiled, and covered with a protective cover.