First.The newly bought water tank heater element which has not been used leakage
1. The manufacturer does not exhaust the moisture of the magnesium powder in the heating element when making it. There is moisture in the magnesium powder and it loses its insulation performance, so the electric heater element of the water tank will leak electricity.
2. When the resistance wire is put into the electric heating tube , there is a deviation caused by the resistance wire touching the stainless steel tube wall. In this case, there will be leakage when the electricity is energized.
3. When welding terminals, they deviate from the center, which may touch the pipe wall. When electrified, there will be leakage phenomenon.
Second, the used water tank heater element leakage
The immersion heater element do not leakage when it is just used in the begining, but it leakage after a period of time, the reasons are followed:
1. The water quality is bad
The water quality heated by the electric heating element of the water tank is dirty, and the water is hard and easy to scale. When the scale is covered on the surface of the tubes, the heat cannot be dispersed. In this way, the surface of the heating pipe burns the pipe wall due to high temperature,causing the leakage.
2. Wrong material selection
The water in the tank contains corrosion components, this time it is necessary to choose corrosion resistant pipe material. If you still choose to heat the electric heating tube material for ordinary tap water, there may be no problem at the beginning. After a period of heating, after corrosion, small trachoma appears on the surface of the tube, and the water is immersed into the insulating magnesium oxide powder. At this time, the electric heating tube of the water tank will leak electricity.
To know more about the water tank heater element ,please check our immersion heater element and consult us.
