The electric actuator, as a key component of the automated control system, its stable operation directly affects the safety and production efficiency of the equipment. The following is a scientific and systematic maintenance and care plan, divided into three aspects: daily inspection, regular maintenance, and fault prevention:
I. Daily Inspection and Operation Norms
1. **Operation Status Monitoring**
Daily check to ensure that the actuator is running smoothly and to look for any abnormal vibrations or noises.
Observe the status of the indicator lights, and confirm whether the power supply, control signals, limit switches, etc. are functioning properly.
Record the operating parameters (such as current, temperature, position feedback) and compare them with historical data.
2. **Environmental Management**
Keep the equipment clean and regularly remove dust and oil stains.
Check whether the protection level (such as IP65) meets the requirements of the on-site environment.
Make sure the installation location has good ventilation and avoid direct sunlight or rain exposure.
3. **Operating Procedures**
- Do not operate beyond the capacity limit. Use strictly in accordance with the technical specifications.
Avoid frequent starting and stopping to reduce mechanical wear.
Before the actuator operates, confirm whether the valve or damper position is correct.
II. Regular maintenance plan
| Maintenance cycle | Inspection items | Operating procedures |
|---|---|---|
| Every month | - Tighten the bolts - Lubricate the bearings - Check the cable connections | - Use a torque wrench to tighten according to the standard torque. - Add special lubricating grease (such as lithium grease). - Tighten the terminals and check the insulation resistance. |
| Every quarter | - Gearbox oil level - Limit switch accuracy - Motor insulation | - Add or replace the gear oil (according to the specified cycle) - Calibrate the position of the limit switch (error ≤ 1°) - Measure the insulation resistance ≥ 2MΩ |
| Every year | - Sealing component aging - Control unit parameters - Overall performance test | - Replace the O-ring, gasket, and other sealing components - Restore the factory settings and re-adjust the parameters - Conduct a full travel test and record the time error |
### III. Fault Prevention and Handling
1. **Prevention of Common Faults**
- **Stuck**: Regularly perform maintenance on the actuator to prevent rusting.
- **Overheating**: Check the cooling fan and ensure that the ventilation path is unobstructed.
- **Signal Loss**: Use shielded cables and enhance grounding protection
2. **Emergency Handling**
- Cut off power immediately in case of failure
- Record fault codes (if any)
- Do not unwrap before contacting professionals
IV. Maintenance points under special conditions
- **Corrosion-resistant environment**: The material used is 316L stainless steel, and regular anti-corrosion coatings are applied.
- **High-temperature environment**: Use high-temperature-resistant cables and add heat sinks
- **Explosion-proof Area**: Select the ExdIICT4 explosion-proof grade and conduct regular inspections of the explosion-proof joint surfaces.
V. Maintenance of Records and Archive Management
1. Establish an equipment ledger and record:
- Installation date, model specification
- Maintenance records (time, content, personnel)
- Fault handling record
2. Prepare a spare parts list and make reserves:
- Vulnerable parts (such as seals, bearings)
- Key components (such as motors, control boards
3. Regular technical assessment:
- Performance evaluation every 3 years
- Make upgrading plan based on assessment results
Through systematic maintenance and care, the service life of the electric actuator can be extended by over 30%, and the failure rate can be reduced by 50%. It is recommended to establish a dual guarantee system of "preventive maintenance + condition monitoring", combined with modern Internet of Things technology to achieve remote monitoring, and further improve the equipment management level.
