Daily Maintenance & Care of PET Bottle Blowing Machine

1. Daily Inspection & Maintenance

1. Keep the machine clean – remove dust and oil from internal and external surfaces.

2. Check air system – ensure normal air pressure, no air leakage; drain the air filter and tank regularly.

3. Inspect heating system – make sure IR lamps work properly and temperature controllers display accurately.

4. Lubricate moving parts – apply oil to slide rails, linkages, guide rods, and chains to prevent dry friction.

5. Check mold condition – clean surface, ensure smooth clamping and no foreign particles.

6. Observe bottle quality – monitor whitening, stretching marks, or neck deformation and adjust parameters if needed.

2. Regular Maintenance (Weekly / Monthly)

1. Inspect electrical system – ensure all terminals are tight; PLC and sensors work correctly.

2. Check air valves and cylinders – prevent air leakage and ensure smooth action.

3. Clean cooling system – maintain smooth water flow, prevent scale blockage.

4. Inspect transmission system – proper belt tension and chain lubrication.

5. Calibrate temperature controllers – verify temperature accuracy with a thermometer.

6. Replace worn parts – O-rings, valve seals, photoelectric sensors, etc.

3. Major Overhaul (Every 6–12 Months)

1. Thorough cleaning of the machine and molds; inspect wear and tear.

2. Check motor and air compressor performance; replace oil if necessary.

3. Update control software or firmware to ensure best efficiency.

4. Recalibrate all parameters – heating zones, blowing pressure, cooling system.

5. Maintain detailed maintenance logs and spare part replacement records.

4. Safety Precautions

• Never repair the machine while it’s under power or pressure.

• Operators must be trained and understand emergency stop procedures.

• Use original lubricants and spare parts recommended by the manufacturer.

• Keep the environment dry and well-ventilated to avoid electrical damage.