Planned, purposeful and professional maintenance can significantly increase the life of the tester. As follows:
First, maintenance plays a critical role in the life of the experiment, and systematic and purposeful maintenance has a decisive impact on the time of operation and useful life of the experiment. Through systematic maintenance, potential malfunctions can be detected in advance and minor problems can be avoided, thereby extending the overall lifetime of the equipment。
Core maintenance requirements
Professional qualifications
Maintenance personnel need to have experience in hydraulic system maintenance, be able to accurately judge and detect the condition of the hydraulic system and have troubleshooting capability。
Maintenance of equipment requires professional training and certification。
Maintenance plan development
A personalized maintenance plan based on the frequency and duration of the experiment shall include the following generic elements:
Phased maintenance content
Before each test
Media system check: check the liquid position of the medium box and check if there is a run-off drop-off in all tubes。
Power system inspection: check the electrical power and confirm that the current is normal and without abnormal sound as the cycle pump operates。
Mechanical structural inspection: check the flexibility of the manual valve switches to confirm that the connection screws are intact。
Electrical system inspection: verify that the power switch function is effective and that the test packaging meets the requirements。
After each test
Gas source treatment: disconnect external sources of gas and disconnect connections and release residual gases from the equipment pipeline。
Interruption: discontinuation in reasonable order to avoid sudden power outages or mechanical shocks。
Quarterly maintenance
Repeat daily inspection: perform all pre-test inspection items。
Cleaning of filtration systems: cleaning media backway y filter cores to prevent impurities from blocking pipes。
Cleaning of equipment: cleaning of equipment as a whole to avoid the accumulation of dust that affects heat dispersion or electrical performance。
Annual maintenance
Comprehensive inspection: covers all inspections on a quarterly basis and assesses the need for replacement of the electric power, pump bearings based on routine maintenance records。
Pipeline system processing: complete repair of run-off leaks in the system pipeline, inspection of damage to air presses spare parts and timely replacement。
Calibration and cleaning: calibration of instruments, instrumentation, cleaning of dust inside the cabinet and screening of screw looseness。
Iv. Maintenance safety norms
Axis test method
The sound is monitored using a needle detector, a pump bearing, and temperature is measured by hand or by a thermostat (hand touching only with the back of the hand to prevent burns)。
Filter cleaning process
The cleaning of filters with gasoline requires sufficient wind drying to avoid residual fluids affecting the purity of the medium。
Media replacement requirements
When replacing the test medium, the residual medium in the clean pipe path is used with a pressurized gas to prevent the mixing of different media leading to chemical reactions or corrosion。
The traffic system is taboo
Users are not permitted to alter or increase pipes without permission, especially when the high pressure pipe is subject to the permission of the manufacturer, who would otherwise bear no consequences。
Host equipment protection
The mainframe equipment, control elements, accessories and piped systems shall not be altered on their own during the maintenance period to avoid compromising the stability or safety of the equipment。
Pressure state limit
Repair and maintenance work must be carried out without pressure in the equipment to prevent high pressure media spray from causing personal injury。
Pipeline connection standards
The maintenance shall be performed in such a way as to ensure that the steel pipe is inserted into the bottom of the frame, that the high-pressure interface is sealed on the cone, and that, when fixed, the contours are fixed before the screws are tightened。
Principles for the replacement of seals
When replacing a pipe or hydraulic tank seal, the same type of seal shall be selected to avoid leakage due to compatibility problems。
Axis replacement process
Electrical, pump bearings shall be replaced by an axle heater to prevent direct impact on the bearing or the neck。
The strict implementation of the maintenance plan described above will result in a significant increase in the non-facility running time of the test machines and an increase of 30 to 50 per cent in the overall lifetime of the equipment, while reducing the risk of sudden failure and ensuring the accuracy and operational safety of the experimental data。
