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What are the maintenance methods of WNS series low nitrogen gas (oil) hot water boiler

What are the maintenance methods of WNS series low nitrogen gas (oil) hot water boiler

(Summary description)Maintenance of WNS series low nitrogen gas (oil) hot water boiler First, check the boiler body to check whether there is water leakage in the boiler body, boiler scaling, carbon deposition in the flue pipe, whether the boiler leaks and whether the flue chimney is unobstructed.

What are the maintenance methods of WNS series low nitrogen gas (oil) hot water boiler

(Summary description)Maintenance of WNS series low nitrogen gas (oil) hot water boiler First, check the boiler body to check whether there is water leakage in the boiler body, boiler scaling, carbon deposition in the flue pipe, whether the boiler leaks and whether the flue chimney is unobstructed.

Information

Maintenance of WNS series low nitrogen gas (oil) hot water boiler First, check the boiler body to check whether there is water leakage in the boiler body, boiler scaling, carbon deposition in the flue pipe, whether the boiler leaks and whether the flue chimney is unobstructed. If problems are found, corresponding maintenance should be taken in time: welding plugging, descaling, carbon deposition cleaning, boiler painting, etc.;

WNS series low nitrogen gas (oil) hot water boiler

The maintenance methods of WNS series low nitrogen gas (oil) hot water boiler are as follows:

     1. Wet maintenance: first drain the water in the WNS series low nitrogen gas (oil) hot water boiler, remove the scale and dirt in the boiler, close all valves and holes of the boiler, inject softened water into the boiler, and put the The prepared sodium hydroxide or trisodium phosphate is dissolved and injected into the boiler; then the boiler water is heated to 100 ℃ under a low fire, and the gas in the water is discharged out of the furnace. When the boiler water emerges from the air valve, close the air valve and the water supply valve. , furnace door and baffle to seal the boiler. The general method for preparing the alkaline solution is to add 5-8 kg of sodium hydroxide or 10-12 kg of trisodium phosphate per ton of water.

     2. Dry maintenance: When the WNS series low nitrogen gas (oil) hot water boiler is shut down for a long time, dry maintenance should be adopted. First, drain the water in the boiler, remove the scale and dirt in the boiler, inject softened water into the boiler, and press the boiler to 0.1MPa with a slight fire, and then stop the combustion; when the temperature and pressure of the furnace are reduced, open the blowdown again. The valve discharges the boiler water and uses the waste heat of the boiler to dry the boiler; then place a desiccant in the furnace, close all valves and holes, and seal the boiler. The desiccant generally uses quicklime or silica gel. The amount of quicklime is 2 to 3 kg per cubic meter of volume, and 1 to 3 kg of silica gel per cubic meter of volume. The desiccant should be placed in an open container and placed evenly; in the future, it should be checked every 1 to 2 months, and the silica gel can be re-dried and reused after failure.

     3. Maintenance of valves, pressure gauges, thermometers and automatic exhaust valves on the hot water pipe network: check the anti-corrosion layer and insulation on the surface of the pipeline, the indication of the pressure gauge thermometer, the single flow, the stop valve, the automatic exhaust valve and the manual exhaust at the end. Air valve, repair and replace in time when problems are found;

     4. Cleaning and anti-corrosion of WNS series low nitrogen gas (oil) hot water boiler: the hot water pipe network is treated with sewage, water quality testing, and softened water replacement, etc., and the entire hot water pipe network is wet maintained and then filled with softened water close all valves;

     5. Maintenance of the burner: mainly clean the carbon deposits inside the burner, clean the burner nozzle, clean the fan, clean the control device, etc. and seal the burner with a plastic bag;

     6. Maintenance of circulating pumps and feed pumps: inspection, repair and replacement of bearings, water seals, noise, wiring, etc.; add lubricating oil to the manual disc pump at the same time, clean the oil and dust on the surface of the pump, and cover it with plastic;

     7. Maintenance of softening water equipment: whether the water softener is in normal operation, whether the salt tank and hose are leaking, whether the resin is effective, etc., repair the problem immediately; after the repair, remove the power plug of the water softener and pour out the salt tank the salt water, seal the connection pipe between the water softener and the salt tank with tape;

     8. Check whether the external insulation of the whole system is in good condition, and whether the fulcrum of each pipeline is firm, and solve the problem in time;

     9. Check WNS series low nitrogen gas (oil) hot water boiler to clean power supply control equipment such as distribution box and control cabinet;


 

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