Guide: 1. The boiler lacks water when the water level is still not visible after closing the steam valve of the drum water level gauge. 2. The boiler lacks water when the water level is still not visible after closing the steam valve of the drum water level gauge.

　　☛ Water shortage in the boiler When the water level is still not visible after closing the steam valve of the drum water level gauge.

　　☞ When the boiler's full water exceeds the visible water level on the top of the drum water level gauge.

　　☛ When the boiler has a crack in the furnace wall and there is a danger of collapse or the beam of the furnace frame burns red.

　　☞ All water level gauges are damaged.

　　☛ When the hydraulic station is seriously damaged and the oil pressure cannot be established.

　　☞ The water wall pipe or economizer pipe blasted and the normal water level in the furnace could not be maintained.

　　☛ When the boiler feed water or steam pipe bursts, which is dangerous to people or equipment.

　　☞ The blower is damaged and cannot continue to run.