How to maintain the household electric water heater?

The maintenance of household electric water heater includes: cleaning the inner container regularly, checking the temperature sensor of the water heater, water pressure reducing valve and other electrical components regularly, and paying attention to cutting off the water and electricity of the water heater when it is not used for a long time. There are also related matters that need attention in maintenance, which we need to know.

1. Maintenance method of electric water heater: 1. Regular cleaning and maintenance.

Household water heaters are generally cleaned once every 6 to 8 months to reduce the discharge of harmful substances and save electricity. When used for a long time, the trace impurities and minerals contained in water will affect the water quality and service life if they are not cleaned regularly after a long period of precipitation. The water tank is cleaned every six months. The cleaning method is to cut off the power supply, close the water inlet valve, then open the water outlet valve, and turn the drain switch on the safety valve counterclockwise by 90 degrees to naturally discharge the water and sediment in the water heater. Then wash it with tap water. After cleaning, restore the drain switch to its original position, and pay attention to full water before electrifying.

2, regularly check the water heater temperature sensor and other electrical components and waterway pressure reducing valve.

When the water heater is in normal use, replace the thermostat and water heater at the designated maintenance point every three years. Replace the expired water heater in time. The electric water heater should be inspected and maintained once a year, because there are more or less impurities in the water. After the water heater is used for a period of time, it is easy to be corroded by alkaline substances in water, which will also affect the safety performance of electric water heaters. After the electric water heater is used for a period of time, scale is easy to accumulate on the heating tube, which seriously affects the heating efficiency and consumes electricity. Therefore, general electric water heaters need regular maintenance of heating tubes. Waterway pressure relief valve needs to check whether there is water leakage, whether the pressure relief function is normal and whether the waterway check function is normal. Observe whether the pressure reducing valve leaks under normal use, manually open the pressure reducing valve to observe whether there is water flowing out, close the water inlet and outlet valve of the water heater, and disassemble the pipeline at the water inlet end of the pressure reducing valve to see whether there is hot water flowing out. If there is no hot water flowing out, the check valve of the pressure reducing valve functions normally.

3. When not used for a long time, pay attention to cut off the water and electricity of the water heater.

If you don't use the water heater for a long time, you should first unplug the power plug and leave the water heater in a power-off state, mainly for safety. If the water heater is not used for a long time, it will lead to accelerated aging of components in the water heater and shorten the service life of the water heater. The second is to turn off the water inlet and outlet switch of the water heater. If it is cold season, it is necessary to drain the water in the water heater liner to avoid freezing the liner.

Second, the maintenance should pay attention to related matters:

1. When adding water, you must open the water outlet, and check whether the water is full after the air in the tank is completely discharged;

2. Regularly remove the residual scale of shower and water curtain to ensure smooth water outlet, which is helpful to prolong the service life of water heater.

3. Do not scrub the shell of electric water heater with acidic or alkaline cleaning solution. When scrubbing, you should choose a neutral cleaner. After wiping, gently dry it with a damp cloth. Please turn off the input power when cleaning.

4, unprecedented must first cut off the power supply;

5. When using, don't spray water on the air switch or the fuselage, so as to avoid electrical components from getting wet.

6. If it is suspected that the water in the water heater may freeze, it is forbidden to turn on the power of the water heater.

7. Under the condition of high water pressure, there may be water drops in the pressure reducing valve, which is normal. It is strictly forbidden to block the pressure relief port, and the diversion pipe can be used to lead it to the safe sewer, and ensure that it is connected with the atmosphere. If the tap water pressure is too high, it is recommended to install a pressure reducing valve far away from the water heater.

8, just open the valve, don't put the direction of water flow to the human body.

9. If the water heater fails or is abnormal, you should contact the seller in time and send it to the maintenance point for maintenance.

10. If it is the first time to install or encounter water stoppage, please pay attention to replenishing water before electrifying.