1. Daily Inspection & Basic Checks

• Visual Inspection: Check for any signs of leaks (oil, fluid, or air), loose connections, or damaged hoses/fittings before and after use. Ensure the pump housing is clean and free of debris.
• Oil Level & Condition (for oil-sealed models): If your pump uses oil, verify the oil level is within the recommended range (marked on the sight glass or dipstick). Check for discoloration (should be clear to amber; dark or cloudy oil indicates contamination and needs replacement).
• Pressure/Vacuum Gauge: Monitor the gauge readings during operation to ensure they remain within the normal range. Abnormal fluctuations may signal blockages or worn components.
• Noise & Vibration: Listen for unusual noises (grinding, squealing) or excessive vibration, which could indicate loose parts, worn diaphragms, or misalignment.

2. Cleaning & Ventilation

• External Cleaning: Wipe the pump’s exterior regularly with a dry or slightly damp cloth to remove dust, dirt, or chemical residues (avoid harsh solvents that may damage the housing).
• Air Intake Filter: Clean or replace the intake filter (if equipped) according to the manufacturer’s instructions. A clogged filter restricts airflow, reduces efficiency, and increases wear.
• Ventilation: Ensure the pump is placed in a well-ventilated area with sufficient space around it (typically 10–15 cm) to prevent overheating. Avoid operating it in dusty, humid, or corrosive environments.

3. Fluid Management (for Wet/Chemical Applications)

• Condensate Drainage: If the pump handles moist gases, drain accumulated condensate regularly (some models have a drain valve) to prevent corrosion or fluid backup into the pump.
• Chemical Compatibility: Avoid pumping corrosive, abrasive, or explosive gases/fluids unless the pump is specifically designed for them. Use appropriate traps or filters to protect the diaphragm and internal components.
• Flush After Use (if exposed to chemicals): Rinse the pump with clean water or a neutralizing agent (as recommended) to remove residual chemicals that could degrade the diaphragm or seals.

4. Regular Component Maintenance

• Diaphragm Inspection: Check diaphragms for cracks, tears, or stiffness (signs of 老化 /aging) at least quarterly (or more often for heavy use). Replace diaphragms immediately if damaged, as they are critical for maintaining vacuum pressure.
• Valve Maintenance: Clean or replace check valves and valve seats if they become clogged with debris or worn, which can cause pressure loss or backflow.
• O-Rings & Seals: Inspect seals and O-rings for wear, hardening, or leaks. Replace them with manufacturer-recommended parts to maintain airtightness.
• Oil Change (for oil-sealed models): Replace the oil according to the schedule (usually every 500–1,000 operating hours, or as specified). Use only the recommended oil type to avoid damaging internal components.

5. Operational Best Practices

• Avoid Overloading: Do not run the pump beyond its maximum vacuum pressure or flow rate, as this strains the motor and components.
• Proper Startup/Shutdown: Follow the manufacturer’s procedure—typically, allow the pump to reach operating temperature before applying full load, and avoid sudden shutdowns under high vacuum.
• Storage: If storing the pump for an extended period, drain any fluids, clean internal components, and store it in a dry, cool place. For oil-sealed pumps, consider replacing the oil before storage.

6. Professional Servicing

• Schedule annual or periodic inspections by qualified technicians, especially for industrial-grade pumps. They can perform detailed checks (e.g., motor condition, bearing wear) and calibrate critical components.
• Keep a maintenance log to track oil changes, part replacements, and issues—this helps identify patterns and plan preventive maintenance.