Every time the sprinkler opens, the discharge valve should be opened first, and the remaining gas in the tank shall be discharged before the accident of wounding occurs. Often pay attention to whether the sprinkler pressure gauge is working properly, to prevent the pressure gauge failure and overpressure occurs tank body explosion. Always check the safety valve to ensure that the exhaust is started at 0.196MPa and the pressure in the tank is not more than 0.196MPa. Often check whether the sprinkler tachometer is working properly, so as not to turn damage to the air compressor and take the Power box. And often clean the tachometer probe (this probe in the air compressor flywheel). Often listen to the sprinkler box and air compressor turning sound. If there is abnormal sound, should immediately stop troubleshooting.