1. After the combined boilers are normal, the load shall be increased gradually to 35 t/h for a period of time, then the load can be increased slowly to the rated load. (Note: in order to ensure that the water cycle is normal, the boiler is not allowed to run under 50% of the rated load for a long time). 

2. When the boiler is on-load, the stoker shall concentrate on regulating the combustion in order to guarantee the stability of steam pressure, steam temperature and water level, and specially-assigne person shall monitor the coal feeder in order to prevent the interruption of coal feeding to the coal feeder. 

3. In case of emergency, the speed of load reduction is not restricted. 

4. After the load is stable, the monitor distributes the boiler evaporation capacity according to the economic load.