1. Carefully check the action sounds of cylinders and moving parts at all levels Listen to see whether the working condition is normal, and stop it in time if it detects abnormal sounds;
2. If it is a water-cooled compressor acts, if the water cannot be supplied immediately after the water shuts off, it is necessary to avoid cylinder cracking due to uneven cooling and heating. After winter storage, the cooling water should be drained to prevent the cylinders from freezing and cracking.
3. Check if the cooling water temperature and flow are normal;
4. Pay attention to the temperature rise of the motor, the bearing temperature, and whether the readings of the voltmeter and ammeter are normal, the current must not exceed the motor's rated current, if exceeded, the Find reason or stop machine for inspection;