1, pneumatic solenoid valve blockage, leakage or out of control, damage, remove inspection, damage to be replaced;

2, compressed air pressure is insufficient, should maintain 0.5-0.7Mpa;

3, cylinder piston "O" ring damage, remove replacement;

4, the stem is stuck to the foreign body, and dismantled and overhauled.

5, electrical fault, check and control electrical apparatus;

6, trachea leak, check trachea and joints damage;

7, the air oil mist is not refueling, according to the requirements of lubricating oil.