1、 Daily cleaning and maintenance

1. Equipment surface cleaningRegularly clean the surface and heat dissipation holes of the equipment using a dry, soft, and lint free cloth to prevent dust and dirt from entering the interior of the instrument. For stubborn stains, gently wipe after power off, but avoid using corrosive cleaning agents or damp cloths to prevent damage to insulation materials.
2. High voltage component cleaningFocus on cleaning the surface oil stains and dust of electrodes and high-voltage cables. If oxidation, scratches or burrs are found on the electrode, it needs to be polished with fine sandpaper or replaced; When electrode contamination leads to poor contact, it is necessary to clean and dry it with alcohol swabs.

2、 Component inspection and replacement

1. High voltage output terminal inspectionRegularly check the tightness of the high-voltage output terminal and test line connectors to ensure that there is no looseness or oxidation. If the metal part of the joint oxidizes, it needs to be sanded and coated with conductive paste to reduce the contact resistance.
2. Replacement of vulnerable partsRegularly replace vulnerable parts according to the life cycle specified in the equipment manual. For example, if the test indicator light is forced to be replaced after working for 2000 hours, the alarm buzzer is updated every 5 years, and the fuse tube needs to be of the same specification and model as a backup, the cause of the failure must be investigated before replacement.

3、 Environmental management

1. Temperature and Humidity ControlThe working environment of the equipment should maintain a temperature of 10-30 ℃ and a humidity of ≤ 70% RH to avoid component aging caused by high temperatures or creepage caused by high humidity. If the environmental humidity is too high, moisture-proof agents can be placed or a constant temperature dehumidification cabinet can be activated.
2. Dust and vibration preventionThe equipment should be kept away from dust and vibration sources, and covered with a dust cover when not in use for a long time. If there is a large amount of dust in the environment, it is recommended to clean the accumulated dust inside with compressed air every week. During non use, the power should be disconnected and stored in a dry and ventilated place, avoiding direct sunlight.

4、 Power management

1. Power stabilityWhen using, it is necessary to ensure that the power supply is stable and reliable, and meets the requirements of the equipment. Avoid using non compliant power sources for testing to avoid damaging equipment or causing safety accidents.
2. Grounding inspectionThe equipment must be reliably grounded, with a grounding resistance of ≤ 4 Ω. If rust is found, the contact surface needs to be cleaned and re tightened to ensure the reliability of the discharge circuit. Measure the resistance value between the grounding terminal and the ground with a grounding resistance tester every month. If it exceeds the standard, the grounding electrode needs to be reprocessed or the connection point needs to be checked.

5、 Calibration and maintenance

1. periodic calibrationTo ensure the accuracy of test results, it is necessary to calibrate the equipment regularly. Professional technicians can be hired for calibration, or self calibration can be performed according to the equipment manual. The calibration cycle depends on the frequency of use and environmental conditions, and it is generally recommended to perform calibration at least once a year. It is recommended to calibrate high-frequency equipment (such as daily inspections on production lines) every 3 months, and low-frequency equipment can be extended to 6-12 months.
2. parameter validationVerify equipment accuracy under constant temperature and humidity conditions, compensate for temperature drift errors, and update calibration coefficients. Add specialized lubricants to the test fixture guide rails and transmission mechanisms, and check if the torque of the fasteners meets the standards. Test insulation resistance and grounding continuity to ensure high voltage output stability, and record leakage current parameters.

6、 Operating standards

1. Pre-operation preparationOperators need to wear insulated gloves and shoes, and lay insulation pads under their feet to prevent high-voltage electric shock. Before operation, it is necessary to familiarize oneself with the equipment operation process and safety regulations, and avoid disassembling or repairing the equipment without authorization.
2. Testing process specificationWhen connecting the tested object, it is necessary to ensure that the high-voltage output is "0" and in the "reset" state. During testing, the grounding terminal of the equipment should be reliably connected to the tested object, and an open circuit is strictly prohibited. Do not short-circuit the output ground wire with the AC power line to avoid danger caused by high voltage on the casing. Try to avoid short circuits between the high-voltage output terminal and the ground wire as much as possible to prevent accidents.

7、 Security protection

1. Warning signSet up clear high-voltage warning signs next to the equipment and equip them with emergency power-off switches to ensure quick response in case of emergencies.
2. Regional ManagementThe work area should be kept dry and tidy to avoid accidental short circuits caused by moisture or accumulation of debris. Non related personnel are prohibited from entering the testing area.