Automatic Tomato Sauce Chilli Paste Bagging Machine

Key Precautions for Operating This Equipment (Pneumatic Piston-Type Paste/Liquid Packaging Machine)

**Before Startup**

1. Check the air supply pressure; maintain an operating pressure of **0.5–0.7 MPa**. Insufficient pressure can lead to unstable filling volumes.
2. Inspect all connecting pipes and fittings for leaks; ensure the interior of the piston cylinder and hopper is clean and free of debris.
3. Ensure the material is free of large, hard particles; hard particles can scratch the inner wall of the piston cylinder, causing leakage and inaccurate dosing.
4. For food production, verify that parts contacting the material are made of 304 stainless steel; if using a heated/stirring hopper, switch on the preheating function in advance.
5. Check that the packaging film is correctly installed and the photoelectric sensor for the color mark is properly aligned.

**During Operation**

1. Do not place hands near moving parts-such as sealing jaws or filling nozzles-while the machine is running to prevent crushing or burn injuries.
2. For materials prone to separation (e.g., peanut butter, sesame paste), keep the hopper agitator running to prevent separation-induced weight deviations.
3. For materials prone to crystallization (e.g., honey), maintain the hopper heating temperature to prevent solidification that could affect filling.
4. Periodically monitor filling weights; stop the machine immediately to investigate if fluctuations occur-do not continue running with unresolved faults.
5. Monitor the sealing jaw temperature; excessive heat can burn through the film, while insufficient heat results in a weak seal.
6. Do not arbitrarily modify internal factory settings; parameter changes require guidance from professional technical personnel.

**After Shutdown**

1. **Promptly clean the piston cylinder, hopper, piping, and filling nozzle.** Dried paste residues can cause the piston to seize and damage the cylinder.
2. Use only clean water or food-grade cleaning agents; strictly avoid spraying water on the electrical control box to prevent short circuits and component damage.
3. Wipe the equipment dry after cleaning and apply basic anti-rust maintenance to moving parts.
4. For long-term shutdowns, disassemble the hopper and piston assembly and allow them to air-dry to prevent rust. ### Routine Maintenance

1. Regularly inspect the air service unit (FRL); drain water and add oil promptly to ensure stable cylinder operation.
2. Regularly check the sealing blade and silicone pressure strip for wear; replace them promptly if heavily worn to ensure sealing quality.
3. Regularly inspect fasteners and pneumatic fittings to prevent loosening or air leaks.
4. Non-qualified personnel are prohibited from disassembling the cylinder metering assembly; improper disassembly will directly affect filling accuracy.

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