Proper Operation And Safety Precautions for Spray Machines

A spray machine is an essential piece of equipment in many construction and coating applications. Proper operation not only helps ensure consistent spraying results but also reduces equipment failures and extends the machine's service life.

To maintain safe operation and reliable equipment performance, operators should follow the operating procedures and precautions outlined below.

1. Watch the Installation Tutorial Before Operating

Before putting the machine into operation, operators should carefully watch the installation tutorial provided with the equipment. Make sure you understand the assembly process, component connections, and basic operating procedures.

If you have any questions during installation or operation, consult the technical support team promptly. Do not rely solely on personal experience to assemble or test the machine without understanding the correct procedures. Improper assembly or operation may cause equipment damage and unnecessary safety risks.

2. Do Not Modify the Internal Electrical Wiring

The internal wiring located at the rear of the machine has been configured and tested before delivery. Do not disassemble, modify, or reconnect these electrical components without authorization.

Unauthorized changes to the wiring structure may cause abnormal machine operation and create electrical safety hazards. Only qualified technical personnel should inspect or adjust the electrical system when necessary.

3. Check the Hydraulic Oil Level Before Starting

Before starting the machine, always inspect the hydraulic system and make sure the hydraulic oil level meets the specified requirements.

Fill the hydraulic system with a sufficient amount of 46-grade hydraulic oil (ISO VG 46), following the recommended oil level indicated by the equipment.

Insufficient hydraulic oil can reduce power output and increase wear on hydraulic components. Continued operation with an inadequate oil supply may cause serious and irreversible damage to the hydraulic system.

4. Remove Air from the Pipelines Before Testing

After completing all assembly and connection procedures, carry out a machine test before beginning normal spraying operations.

An important step is to remove any trapped air from the machine's internal pipelines according to the manufacturer's instructions.

If air remains in the pipelines and the spray gun is connected directly for operation, it may interfere with the proper mixing of the two-component materials. In severe cases, uneven mixing may lead to material crystallization, which can block the spray gun and pipelines.

This can negatively affect coating quality and may also damage machine components.

Make sure the pipeline air-removal procedure is completed before starting the actual spraying process.

5. Check the Motor Rotation Direction

After connecting the machine to the power supply, carefully check the motor's rotation direction.

The motor must rotate in the direction indicated by the machine's markings or operating instructions. If the rotation direction is incorrect, the machine may not function properly.

Stop the machine and have the direction checked and corrected by qualified personnel before continuing operation. Do not run the machine under abnormal operating conditions.

6. Follow the Correct Shutdown and Cleaning Procedure

After completing spraying work, do not switch off the air compressor immediately.

Follow the recommended shutdown sequence:

1. First, switch off the main spray machine.

2. Keep the air compressor running so that the compressed air can help clear residual material from the spray gun and nozzle area, following the manufacturer's cleaning procedure.

3. Once the cleaning process is complete, switch off the air compressor.

This procedure helps prevent residual material from hardening inside the spray gun or nozzle, which could otherwise cause blockages and affect the next operation.

Always follow the cleaning instructions for the specific spraying material and equipment model.

Conclusion

Reliable spray machine performance depends on standardized operation and regular maintenance. Carrying out pre-start inspections, monitoring the machine during operation, and cleaning the equipment properly after each job can significantly reduce the risk of equipment failure.

If any abnormal condition occurs during operation, stop the machine immediately and contact the after-sales technical support team for assistance.

Do not attempt to disassemble or repair the machine yourself unless you are qualified and authorized to do so. Proper operation and timely professional maintenance help protect both operators and equipment while ensuring consistent spraying performance.