Screw machine maintenance method

The maintenance method of screw machine involves many aspects, the following are some key maintenance steps and precautions:

1. regular inspection and replacement of key components

1. filter:
   • air filter: Used to filter dust and dirt in the air to prevent impurities from entering the unit. It is recommended to check and clean regularly, and replace it in time according to the usage. Generally, it is recommended to maintain once a week.
   • Oil filter: The oil core should be replaced after the new machine has just started running for 500 hours. After that, it is recommended to replace the new filter element every 1500-2000 hours. Replace the oil filter element at the same time when changing the oil, and shorten the replacement cycle when used in harsh environments.
2. Lubricating oil:
   • regularly check the quality and quantity of lubricating oil to ensure that the oil is sufficient and the oil is clean. According to the use and manufacturer's recommendation, regularly replace or supplement the lubricating oil. The new machine is replaced for the first time after the running-in period (about 500 hours), and then the new oil is replaced every 2000 hours.
   • Pay attention to the selection of pure special screw oil to ensure the normal operation of the equipment and extend the service life.

2. cleaning and maintenance

1. cooler:
   • clean the cooler regularly and keep its surface clean to ensure the cooling effect and heat dissipation performance. This is essential to prevent the unit from overheating and to ensure the normal operation of the equipment.
2. Inside the unit:
   • regularly clean and maintain the inside of the compressor. After turning off the power and exhausting the compressed air in the compressor, open the cover and panel of the compressor, use detergent and tools to clean the internal parts, and ensure that the parts are intact.
3. Condenser and evaporator:
   • for screw chillers, the condenser and evaporator should be cleaned regularly to ensure good heat dissipation and cooling effect.
4. cooling water tower(Water-cooled screw machine):
   • regularly check whether the fan, radiator and water tank of the cooling tower are normal and whether there is leakage in the unit. At the same time, avoid debris into the cooling water tower, keep regular cleaning.

3. inspection and adjustment

1. fasteners and couplings:
   • regularly check the fasteners and couplings of each part of the unit to ensure that there is no looseness and falling off.
2. Electrical and control systems:
   • regularly check whether the connection of the electrical system is loose, whether the wires are worn, and whether the electrical components are working properly. At the same time, check the settings and operating status of the control system to ensure its accuracy and reliability.
3. temperature and pressure:
   • regularly check the numerical records of the temperature controller. If high temperature occurs, focus on the cooling device. Check and clean cooling equipment such as coolers.
4. Fans and belts:
   • regularly check the operation and cleanliness of the fan to ensure its heat dissipation effect. For screw machines using belt drives, check and replace loose or worn belts regularly.

4. Other Considerations

1. ground maintenance:
   • for small assembled screw chillers, a large amount of ice water on the ground should be prevented. If there is ice, do not hit the floor with a hard object or damage the floor when cleaning.
2. Winter maintenance:
   • when the chiller is not used for a long time in winter, the unit should be turned off first, and then the main power supply should be turned off to drain the water inside to prevent freezing inside the unit.
3. Use of the environment:
   • keep the inside of the air compressor clean to avoid affecting air quality due to poor environmental quality. At the same time, pay attention to the impact of the use environment on the performance of the unit, such as temperature, humidity, etc.

By following the above maintenance methods, the normal operation of the screw machine can be ensured and its service life can be extended. When carrying out maintenance, the operation instructions and maintenance manual of the equipment should be strictly followed.