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Home - News - Screw Air Compressor Startup and Shutdown Instructions

Screw Air Compressor Startup and Shutdown Instructions

July 31, 2025

▶Precautions Before Starting:
1. Check the three-phase power supply and confirm it is normal.
2. Unlock the machine door and check the compressor oil level. The oil level must not fall below the minimum level. Otherwise, refill the coolant to the normal level.
3. Turn on the controller and check the LCD for any abnormalities. If "Equipment Shutdown" is displayed, it is normal.
4. Open the compressor outlet valve.
5. After all the above checks are complete, press the compressor start button (i.e., the "ON" button) to resume normal operation.

 

▶Operation Precautions:
1. After starting the compressor, observe the compressor running for 3-5 minutes. Observe for any abnormal noises, vibrations, oil or gas leaks, etc. If any, immediately stop the machine and inspect it.
2. Pipelines and containers in operation are pressurized. Do not loosen pipes or plugs, or open unnecessary valves.
3. Observe the oil level during operation. It is normal for the oil level to drop slightly when the machine is running compared to when it is shut down. If the oil level is not visible and the exhaust temperature exceeds 100°C, shut down the machine immediately. Observe the oil level 10 seconds after shutdown. If it is low, refill the lubricant when the system is pressure-free.
4. After the air is cooled by the cooler, condensate will form. This should be drained regularly to prevent it from being carried into the downstream system. The draining schedule can be adjusted flexibly based on weather conditions, but is generally more frequent in the summer.
5. During operation, record parameters such as voltage, current, outlet gas pressure, outlet exhaust temperature, and oil level at least daily for future reference during maintenance.

 

▶Shutdown Precautions:
1. First, press the OFF button. After 10-15 seconds, the intelligent controller will shut down according to the pre-programmed shutdown procedure. The motor will then stop. Avoid shutting down the air compressor directly under heavy load.
2. If necessary, press the emergency stop switch (red button) to disconnect the power to the main controller and contactor. 3. After shutting down the air compressor, do not restart it immediately. Wait approximately 1-2 minutes for the system to automatically vent internal pressure to prevent damage to the motor from starting under heavy load.
4. After commissioning the air compressor, adjust the pressure and other parameters according to actual conditions and set it to fully automatic control mode. Generally, no user adjustments are required.

 

 

KAPA has been focusing on screw air compressor solutions for 20 years.
Service hotline: +86-15986632735
Website: https://www.kapaac.com/