When the air electric heater works abnormally, it is necessary to find the cause in time and solve it in time to ensure the normal operation of the production. The following describes the troubleshooting techniques of the air electric heater .
I. stop running
Check the power of the air electric heater to ensure whether it is caused by a problem with the line, whether the three-phase power is normal or there is a phase loss, if there is a phase loss, find an electrician in time; whether the fuse is intact, and whether the equipment itself is burned out; Open the air heater protective cover and use a multimeter to check whether a single electric heating element is open.
2. The temperature meter is abnormal
When the thermometer data of the air electric heater shows abnormality, we must first check whether the air switch is closed, and then check whether the control circuit is intact; after the power is turned on, the temperature of the heater is moderate, and we have to troubleshoot the cause First check whether the fuse is intact, if there is no problem, check whether the heater itself is damaged;
In winter, if the temperature is below 0 ℃, if the measures are not taken, the water in the heater will easily form ice, which will affect the normal operation, and it may cause the pipe to burst. The causes of surface crackers in different regions may be different. In areas with relatively mild temperatures, it may be because there is no preheating plate in winter, and the surface coolers have water in them. Freeze after inhaling cold air.
At this time, you should pay attention to draining the water from the surface cooler when not in use in winter. For example, in the southern winter, the surface cooler freezes and cracks. However, due to the extremely low temperature of a certain weather, the return air is not mixed with the fresh air, and the cold outdoor air is directly blown on the surface cooler. Fully mix fresh air and return air;
Three-phase imbalance, we can first check whether the incoming line voltage of the three phases is lack of phase, or open the gas pipeline heater protective cover and use a multimeter to check whether an electric heating element is caused by an open circuit.