。1, It should be avoided that the rod is withdrawn or put into the water while it is heating. Before being withdrawn, the should be cut off electricity for 5 minutes. 2, A gradual way should be adopted when you are adjusting the temperature to prevent the temperature from rising or dropping in a short time which will make those living things feel urgent. 3, A spare rod should be prepared in case that the current one is broken. 4, if the display light of the heating rod is always on, we should pay attention to it and at the same time closely observe the thermometer. This can be the sign indicating that the rod is about to be broken. 5, If the heating rod is broken, you should first cut off the power?supply and then deal with it, avoiding getting an electric shock.
The heating rod should sink into the water completely with the part contains heating wire downward, otherwise the heating rod will be burned. Wires do not need to be put into the water. When it is ensured that the heating rod is completely sunk in water, it is better to put as less electric wires in the water as possible. After all, the electric wire that is wrapped by plastic will age faster when soaked in water.
Heating rods can stick out the water surface. The temperature knob and wire part has been sealed, so there will be no leakage. If you see there is water vapor in the heating pipe, it does not matter, because that is the water vapor sealed in the tube. This vapor exists because it is difficult to achieve complete vacuum in domestic products. Instead, if you do not put all the heating rods into the water, the water will be unevenly heated. When the part out of the water is cold and the part inside of the water is hot, heating rods will crack, especially at the seal. By then, the water will flow into the rods causing water leakage.
