9 ways you to effectively extend the life and shelf life of coil heater?
1. Coil heater terminal, use 2 nuts to be relatively fastened during wiring. Do not use excessive force to avoid loosening the screw and damage the electric heating tube.
2. The heating pipe should be stored in a dry warehouse. If it is left for a long time, the surface is damp, and the insulation resistance is measured by using a megohmmeter. If it is less than 1 megohm / 500 volts, the electric heating tube should be placed in a 200 degree drying oven for drying.
3. The heating part of the hot runner heater should be completely immersed in the heating medium to avoid the heat dissipation and the coil heating is damaged beyond the allowable heating temperature. In addition, the wiring lead-out part should be exposed outside the heater's insulation layer or heater so that this part should not be overheated and damaged.
4. Input power, the voltage should not exceed 10% of the rated voltage on the various hot coil heater. If it is lower than the rated voltage, the heat generated by the coil heater will also drop.
5. The terminal of the heating coil should be kept clean and dry, otherwise it will reduce the insulation performance and be short-circuited. If the environment is corrosive, flammable, explosive or other liquid or gas, the wiring part of the micro tubular heater should be used. The insulating sealing device is strictly protected against accidents.
6. When heating certain substances such as viscose, such as sodium nitrate, stearic acid, paraffin, etc., the power supply voltage should be lowered when heating, so as to reduce the heat generation of the industrial electric heating tube. When it is completely melted into liquid, it rises to The rated voltage is heated.
7. The coil heater is used for a long time. If the surface gathers thick tube scale and grease stain, it should be removed regularly. Otherwise, the heat transfer performance of the heating coil will be reduced and the thermal load on the tube surface will exceed the rated allowable damage.
8. Special coil hot runner heater should be read in detail before installation to avoid damage.
9. Special attention should be paid to the heating medium when selecting coil heater. It should not corrode the electric heating shell material.