Introduction

Aerosol filling machines are vital production equipment used across many industries—from automotive care and household chemicals to cosmetics, personal care, and pharmaceutical aerosols. They handle multiple processes, including liquid filling, valve placement, crimping, propellant injection, and leak testing, all under pressure. Proper maintenance is not just about keeping the machine running; it directly impacts filling accuracy, product consistency, operator safety, and overall production efficiency. For operators, a clear and practical maintenance routine helps catch small issues before they become major failures, reduces unplanned downtime, and extends the machine’s useful life. This concise checklist covers daily, weekly, and monthly tasks, along with a preventive schedule, to help you maintain reliable aerosol filling production.

1. Daily Maintenance (Before and After Each Shift)

Clean Filling Nozzles and Product Contact Parts
Remove residue to prevent blockages, contamination, and uneven filling.

Clean nozzles, pipelines, filling heads, and all contact surfaces.

Check Filling Accuracy
Spot-check fill weights and consistency. If deviations occur, inspect the filling valve, air pressure, pump performance, and pipelines.

Inspect Air Pressure and Gas Supply
Verify stable compressed air and propellant pressure. Check filters, connections, and pressure regulators.

Listen for Unusual Noise or Vibration
Detect loose parts, lack of lubrication, or worn components early to avoid major breakdowns.

2. Weekly Maintenance

Inspect Seals (O-rings)
Look for wear, cracks, or hardening. Replace immediately if leakage is found.

Lubricate Moving Parts
Apply recommended lubricant to cylinders, sliding parts, and mechanical joints—moderate amounts only.

Check Crimping System Performance
Verify crimping head condition, crimp height, and valve sealing quality to prevent gas leakage.

Clean Air Filters and Pneumatic Components
Drain water from regulators and clean filters to ensure clean air supply.

3. Monthly Maintenance

Inspect Electrical Components
Check the control panel, sensors, wiring, and emergency stop function.

Check Filling Pump Performance
Test pump pressure, seals, and filling speed. For high-viscosity products, additional cleaning may be needed.

Calibrate Machine Parameters
Re-calibrate fill volume, crimping settings, propellant pressure, and sensor positions.

4. Preventive Maintenance Schedule

5. Common Problems and Solutions

Inaccurate filling – Clean nozzles, re-calibrate parameters, inspect pump components.

Can leakage after filling – Adjust crimping, replace damaged valves or seals.

Frequent machine stops – Check sensors, stabilize air supply, replace worn parts.

6. Best Practices for Operators

l Follow the maintenance schedule strictly—don’t wait for failure.

l Keep maintenance logs: date, replaced parts, issues, and notes.

l Use original spare parts for better compatibility and longer life.

l Receive proper training to detect early signs and operate correctly.

7. Conclusion

Regular maintenance is the cornerstone of efficient aerosol filling operations. By adhering to this concise checklist, operators can reduce downtime, ensure consistent product quality, and protect their equipment investment. For professional guidance on maintenance or selection of aerosol filling machines, feel free to contact Wejing engineers for customized solutions tailored to your production needs.