2. Boiler and safety accessories shall be inspected and within the validity period.
3. Preparation before furnace startup
(1) gas furnace to check whether the gas pressure is normal, not too high or too low, open the door of oil and gas supply section; (2) check whether the water pump is filled with water, or open the air valve until it is filled with water. Open each section door of the water supply system (including the water supply section door before and after the water pump and the boiler); (3) check the water level gauge, the water level should be in the normal position, the water level gauge and the water level color plug should be in the open position, and the false water level should be eliminated. If there is water shortage, water can be supplied manually; (4) check the valve on the pressure pipeline, must be opened, the wind deflector on the flue must be fully opened; ⑤ Check that all knobs on the control cabinet are in normal positions; ⑥ Check that the outlet valve of steam boiler should be closed, and the outlet valve of circulating water pump of hot water boiler should also be closed; ⑦ Check whether the softened water equipment is running normally, and whether the indexes of the manufactured softened water meet the national standards.
4. Start furnace operation
1) steam boiler (1) turn on the main power supply; (2) Start the burner; (3) When the vent valve on the drum is completely steam, close it; (4) Check the manhole, handhole flange and valve of the boiler, and tighten it if any leakage is found. If there is leakage after fastening, stop the boiler for maintenance; 5] When the air pressure rises to 0.05 ~ 0.1MPa, replenish water and drain, check the test water supply system and drain device, and flush the water gauge at the same time; [6] When the air pressure rises to 0.1~ 0.15 MPa, flush the pressure gauge trap; (7) When the air pressure rises to 0.3MPA, the "load fire/small fire" knob is turned to "fire" to strengthen the combustion; Being air pressure rises to two-thirds of the operating pressure, start to warm the pipe to send air, and slowly open the main steam valve to avoid water hammer; Levies the drain valve is completely closed when steam comes out; ⑽ After all the drain valves are closed, slowly open the main air valve until it is fully open, and then turn it for half a turn; ⑾ Turn the "burner control" knob to "automatic"; ⑿ Water level adjustment: adjust the water level according to the load (start and stop the feed pump manually), the water level should be slightly higher than the normal water level at low load, and slightly lower than the normal water level at high load; [13] Steam pressure adjustment: according to the load adjustment combustion (manual adjustment of large fire/small fire) [13] Judging the combustion status, judging the air quantity and fuel atomization status according to the flame color and flue gas color [13] Observing the flue gas temperature, which is generally controlled between 220-250℃, and observing the flue gas temperature and concentration of the chimney at the same time, adjusting the combustion to the best state. 2) hot water boiler (1) turn on the main power supply; ⑵ Start the circulating pump; (3) slowly open the outlet valve of circulating pump; (4) start the burner; ⑸15min later, turn the color knob of "load fire/small fire" to "fire", and turn the knob of "burner control" to "automatic". 5. Normal shutdown: normal shutdown of hot water boiler A: hot water boiler ① turn the "load big fire/small fire" knob to "small fire"; (2) turn off the burner; ③ Close the fuel supply valve; (4) Close the flue damper (5) After the outlet water temperature of the boiler drops to 50℃, close the outlet valve of the circulating pump. ⑥ Stop the circulating pump steam boiler ① "Load fire/small fire" position; (2) turn off the burner; (3) when the steam pressure drops to 0.05-0. 1MPA, the sewage shall be discharged; (4) close the main steam valve; ⑤ Manually replenish water to a slightly higher water level; 6. Close the water supply valve; ⑦ Close the combustion supply valve; End up closing the flue damper; Pet-name ruby shut down the main power supply B emergency stop hot water boiler ① close the inlet and outlet valves of the boiler; (2) open the emergency discharge valve and emergency water supply valve; ③ Turn off the main power switch; (4) notify the superior leadership; Steam boiler ① Close the main steam valve; ② Turn off the main power supply; (3) notify the superior leadership.