Electrical boilers typically require maintenance and upkeep within the first 1-2 years of use to ensure proper operation. Regular inspections are fundamental to maintaining the boiler's continuous, reliable performance.

When maintaining and repairing boilers, it is mandatory to shut off the power and release pressure.

Check for loose connections of electrical instruments, temperature sensors, pressure sensors, and heating elements, and clean accumulated dust.

3. Cleaning the interior of the boiler body, during operation, scale and sludge will form on the inner surface of the boiler, requiring cleaning operations. Mechanical cleaning methods or chemical cleaning methods can be used. When the scale is thick or hard, first use the chemical cleaning method, followed by the mechanical cleaning method. When using the chemical cleaning method, it must be strictly in accordance with national regulations to prevent corrosion and damage to the boiler caused by improper cleaning. The chemical cleaning should be carried out by professional units approved by relevant departments. Mechanical cleaning involves using tools such as a hammer to scrape off the scale. Inspection after boiler cleaning is a very important task. Neglecting this task may lead to accidents during operation, so it should be taken seriously.

The following are the inspection items after the internal cleaning:

Is the scaling thoroughly removed, particularly in areas exposed to high temperatures where any scale residue may remain?

b. Inspect the water level gauge, pressure gauge, and the junctions of the automatic control, as well as each pipe's inlet and outlet, to ensure they are clean and not obstructed by debris.

c. Are tools and bolts left behind in the boiler?

d. Inspect all components for corrosion and damage. If any are found, record the extent of the damage, and replace components that are severely damaged.

4. Cleaning Scale from Electric Heating Tubes: Over time, electric heating tubes develop scale on their surfaces. It is essential to regularly remove this scale to prevent a decrease in heat transfer performance of the electric heating tubes, which could lead to excessive surface heat load and damage. When cleaning the scale, avoid using acidic liquids or metal abrasives.

5. Inspect the mechanical connection between the heating assembly and the furnace body for looseness and check for corrosion of the sealing rings. If leakage is detected, replace the sealing rings.

6. Inspect the boiler body's pipe joints, pipelines, and supports for any leakage traces.