First, we use the resistance meter to see if there is any resistance value in the electric heating tube
If not, it means that the electric heating tube is broken. It may be that the resistance wire inside the electric heating tube is broken, so that it can not be repaired.Like the flange electric heating tube is composed of many U-shaped tubes. If a U-shaped tube is broken, the other root U-shaped heating tube and the resistance value, then the flange electric heating tube can not be repaired, because all the U-shaped tubes are welded up and can not be removed.
Two, if the electric heating tube and resistance value
1, the heating tank surface has small holes, always leakage tripping phenomenon.
In this way, the surface of the electric heating tube is corroded, and the liquid is immersed into the magnesium oxide powder through the hole, so that the magnesium oxide powder loses its thermal conductivity and insulation.It can't be fixed.
2, the heating tube surface is smooth, no dent or hole.
It shows that the electric heating pipe can be repaired.It may be that the electric heating tube is placed in a humid environment for a long time, and the internal magnesium oxide powder is damp, weakened or lost the thermal conductivity and insulation, resulting in the surface temperature of the electric heating tube is not high.
The repair method is to put the damp electric heating tube on the temperature of 200 degrees oven, bake for 30 minutes.
