Maintenance and Care for Screw Compressors

Screw compressors are the core power equipment in modern industrial production. Their stable operation directly affects production efficiency and equipment lifespan. However, many enterprises often focus on use but neglect maintenance, resulting in frequent equipment failures and increased energy consumption. In fact, as long as you master the correct maintenance methods, screw compressors can remain highly efficient and stable for a long time.

• Daily Tasks

Check the instruments: Observe whether the pressure, temperature, and current are within the normal range.

Drain water: Drain water from the bottom of the air storage tank and filter every day. If the environmental humidity is high, increase the drainage frequency to prevent water accumulation from causing rust and emulsification of lubricating oil.

Check the oil level: Ensure the oil level is at the middle position of the sight glass. If insufficient, add oil in time. If the oil turns black or white (emulsified), it must be replaced immediately, and it is strictly forbidden to mix different brands or models of lubricating oil.

Clean the dust: The surface of the radiator is prone to accumulate dust, which will affect the heat dissipation efficiency and lead to increased energy consumption. Clean it gently with a cloth or air gun every day to make the heat dissipation smoother.

• Periodic Maintenance

In addition to daily checks, more comprehensive maintenance should be carried out according to the schedule:

-Every half month to one month：

Use low-pressure compressed air to blow the air filter from the inside out (be careful not to blow it through)

Check and adjust the belt tension

Tighten all wire connections to prevent loose connections from overheating

-Every quarter or after 2000 hours of operation：

Replace the lubricating oil and oil filter

Clean the dust and sludge inside and outside the cooler

-Every six months or after 4000 hours of operation：

Replace the air filter and oil-gas separator core

Test the sensitivity of the safety valve

Calibrate the pressure and temperature sensors

-Every year or for 8000 hours of operation：

Check for bearing wear and replace seals

Comprehensively assess the condition of the motor and the main unit, and arrange major repairs if necessary

• Key Precautions

The lubricating oil must be of the specified type: Mixing oils of different brands and different viscosities can lead to coking and carbon deposits, and in severe cases, the main unit can become stuck. Before changing the oil, make sure to completely drain the old oil.

Avoid overloading operation: Pay attention to enhanced ventilation and heat dissipation during hot weather. The continuous operation time should not exceed the equipment's rated operating conditions. If necessary, arrange for rest breaks.

Maintain a good operating environment: The equipment room should have good ventilation, dust and moisture protection, and the relative humidity should preferably not exceed 70%.

• Quick Diagnosis of Common Faults

• Management Suggestions

Establish maintenance records: Record the time, items, replacement parts, and abnormal situations for each maintenance session.

Prepare common spare parts: Have a reasonable stock of easily worn parts such as air filters, oil filters, oil separation cores, and belts. Replace them as soon as they are damaged to avoid prolonged downtime due to waiting for spare parts.

Have professionals conduct an annual check-up: Even if there are no obvious faults, it is recommended to invite the manufacturer or a professional service team to conduct a comprehensive inspection of the entire machine once a year to detect potential problems in advance.

The maintenance of screw air compressors is not complicated. The key lies in “persisting in daily operations, following regular schedules, and paying attention to details”. By doing these things well, your equipment will not only significantly reduce the failure rate, but also extend its service life and save energy.

If you encounter any difficulties during the maintenance process, the Deman seven-star service team is always available to provide professional support. We respond promptly within 24 hours, ensuring that your air compressor remains in optimal condition at all times.