I. Routine Cleaning Cycle
1. Dusty Environments (e.g., coal mines, chemical plants)
Clean at least once a month. Use compressed air (pressure ≤ 0.3 MPa) to remove dust from the vents. Focus on checking the grid-shaped vents for blockage. After cleaning, verify heat dissipation efficiency with an infrared thermometer.
2. General Industrial Environments
Clean once a quarter, as part of overall equipment maintenance. Also check the seals for aging (which affects explosion-proof performance).
II. Special Scenarios
1. High-Temperature and High-Humidity Environments (e.g., refineries)
It is recommended to reduce inspection frequency to once every two weeks. After cleaning, test the device case temperature (normally below 60°C).
2. Long-Term, Continuous Operating Equipment
For DVRs operating 24 hours a day, additional monthly inspections of the heat dissipation vents are required.
III. Cleaning Procedures
1. Power-off Operation
Disconnect the power supply and wait for 5 minutes for cooling. Do not clean with the power on.
2. Tool Selection
Use a microfiber cloth or soft-bristled brush (metal tools are prohibited). Stubborn stains can be removed with anhydrous alcohol swabs.
3. Maintenance Records
Record the time, method, and any defects found during each cleaning (if a heat dissipation vent is deformed, report it immediately).
IV. Handling Abnormal Situations
If the heat dissipation vent temperature rises abnormally (over 70°C) or if cleaning does not improve heat dissipation, contact a professional explosion-proof equipment repairer.
Operation within the equipment warranty period must confirm that it does not affect warranty coverage.
