Guide: Be careful not to modify the boiler at will, and use the atmospheric boiler under pressure. Boilers are divided into two types: pressure boiler and atmospheric boiler. The manufacturing quality and testing methods of atmospheric boilers are not suitable for pressure-bearing use, and should be directly connected to the atmosphere and kept at zero. Don't install valves by yourself, change the atmospheric pressure boiler to a pressure-bearing boiler. In fact, atmospheric boilers and pressure-bearing boilers are easy to distinguish. The product nameplates of pressure-bearing boilers have the production license number of the manufacturer and the stamp of supervision and inspection, and the technical information is complete, while atmospheric boilers do not have these.

　　1. Be careful not to modify the boiler at will, and use the atmospheric boiler under pressure. Boilers are divided into two types: pressure boiler and atmospheric boiler. The manufacturing quality and testing methods of atmospheric boilers are not suitable for pressure-bearing use, and should be directly connected to the atmosphere and kept at zero. Don't install valves by yourself, change the atmospheric pressure boiler to a pressure-bearing boiler. In fact, atmospheric boilers and pressure-bearing boilers are easy to distinguish. The product nameplates of pressure-bearing boilers have the production license number of the manufacturer and the stamp of supervision and inspection, and the technical information is complete, while atmospheric boilers do not.

　　2. Pay attention to keep the boiler safety accessories in good condition. Boilers are equipped with safety accessories such as water level gauges, pressure gauges, and safety valves. Some boilers also have water level alarms, overpressure alarms and other devices. These accessories are the "links" for the boiler to communicate with people during operation and must be maintained. If it is intact, we can correctly understand the "temperality" of the boiler. In the operation of the boiler, the operator should flush the water level gauge frequently to avoid clogging, check the pressure gauge regularly, check the safety valve regularly and do the exhaust test to ensure that the exhaust can be taken off when the boiler is overpressure. Prevent the occurrence of boiler explosion.

　　3. Do not use the boiler with overpressure. The pressure that the pressure-bearing boiler can withstand is determined by design calculations. Different pressure boilers have different steel thicknesses and inspection requirements. If the "small horse-drawn cart" is used in excess of its rated pressure, it may exceed the limit that the boiler can withstand and cause an explosion.

　　4. Operators must stick to their posts and do not leave their posts.