Hydraulic Press Repair and Maintenance Guide

1. Oil monitoring and replacement

Check the hydraulic oil level daily to ensure that it is within the tank calibration range. Regular replacement of hydraulic oil: It is recommended to replace ordinary equipment once a year, and the first use should not exceed 3 months; high-load equipment is calculated according to the running time, and replaced every 2000-3000 hours (about half a year to a year); under special environments (such as high temperature and high pollution), the replacement cycle needs to be shortened. Oil selection: It is recommended to use No. 32 or No. 46 anti-wear hydraulic oil, and the oil temperature should be controlled at 15~60℃. Strict filtration is required when changing the oil, and the new oil must also be filtered before adding to avoid impurity contamination.

2. Oil system cleaning Regularly clean the oil tank, oil pipe and oil filter to prevent blockage. The frequency of replacing the filter element needs to be adjusted according to the oil quality, generally synchronized with the oil change cycle.

2. Seal and leakage control 1. Seal inspection and replacement Check the hydraulic cylinder and pipeline seals every month, and replace them immediately if oil leakage or aging is found. The life of the seal is usually 1~1.5 years, and it is recommended to replace it regularly. Check the high-pressure hose every six months and replace it if cracks or expansion occur.

3. Lubrication and maintenance of moving parts 1. Lubrication management

Moving parts such as sliders, guide rails, piston rods, etc. need to be regularly injected with anti-wear lubricants to reduce friction losses. It is recommended to lubricate bearings and connecting rods once a quarter, using the manufacturer's specified grease.

2. Parts cleaning and rust prevention Clean the surface of the column and spray oil after each work to prevent rust. When out of service for a long time, apply anti-rust oil and seal the exposed holes.

4. System performance calibration 1. Pressure and accuracy calibration Calibrate the pressure gauge every six months to ensure that the displayed value is consistent with the actual pressure. Perform a load test once a year to verify the stability of the equipment under rated pressure.

2. Safety device inspection

Regularly test the response reliability of solenoid valves, limit switches and emergency stop buttons. The dual oil pump system needs to be switched regularly to avoid long-term idleness and performance degradation.

5. Electrical and control system maintenance 1. Electrical component inspection

Check whether the controller and sensor wiring are loose every month, and clean the dust in the electrical control box.

The grounding device needs to be tested every quarter to ensure compliance with safety standards.

VI. Environment and operation specifications 1. Work environment control

Keep the area around the equipment dry and clean to prevent oil, moisture and dust from entering the system.

Install temperature control equipment to ensure that the hydraulic oil temperature does not exceed the limit (generally ≤60℃).

2. Safety operation requirements

Overloading is prohibited (such as the maximum eccentricity of 500T equipment does not exceed 40mm).

Immediately shut down for maintenance in case of abnormal conditions, and operation with defects is prohibited.

VII. Maintenance plan and record 1. Preventive maintenance

Develop an annual maintenance plan, including quarterly in-depth inspections and monthly basic maintenance.

After maintenance, it is necessary to record the replacement of parts, calibration parameters and fault handling methods.

2. Personnel training

Operators need to receive professional training and be familiar with the principles of the equipment and emergency handling procedures.

Maintenance work should be performed by certified electromechanical personnel or designated technicians.