A. Problems arising from installation errors
1. When installing the standard heater, the customer needs to use the stainless steel plate with a thickness of no more than 1.5mm as the fixed panel of the heater, and open an elliptical hole on the fixed panel as the installation hole. When the thickness of the stainless steel plate exceeds 1.5mm, the installation seat of the heater may be squeezed and broken, or the installation spring of the matching sleeve may lose its elasticity. The thickness of the stainless steel plate exceeds 1.5mm, causing the heater mounting base to crack.
2. The gap between the heater and the heater shall be reserved according to the requirements of the product manual. The gap between heaters is too small, which may cause the local temperature between heaters to be too high and burn the heaters. The heater spacing is too small, causing local overheating.
B. Problems arising from line errors
1. The rated voltage of the standard heater is 230V. When the heater is connected to the 380V circuit by mistake, the heater works at ultra-high temperature under overpressure, causing the heating wire to burn.
Burn out due to overpressure operation of heater
2. The power cord connecting the heater should be high temperature resistant, and the wrong choice of wire material has potential electrical safety hazards.
High temperature resistant conductor is not used for line connection
3. The thermocouple used in the heater is K-type thermocouple, which must be connected according to the connection specification of thermocouple wire. The heater temperature is out of control due to the wrong connection of thermocouple lines.
Abnormal heating of heater caused by wrong thermocouple connection
C.Problems arising from use errors
1. The working environment contains acid, alkali, chlorine and other corrosive gases, or the heated object will release such corrosive gases during heating, which will lead to corrosion damage on the ceramic surface and accelerated aging of the heating wire.
The heater is corroded by acid gas
2. The heater is burned or has poor radiation efficiency due to the surface pollution during use, which is common in the heater under the furnace, such as falling of heated objects, dust cover in the working environment, and pollution by oil or other foreign matters.
The lower heater is affected by pollution
3. The temperature that the heater can withstand is 900 ℃. When it is used beyond this temperature, the life of the heater cannot be guaranteed.
Long time use at ultra-high temperature leads to melting and cracking of ceramics
4. The heater is affected with damp or water, causing electric leakage.
Electric leakage caused by heater damp
5. The heater can not work normally or even burnt out due to unauthorized modification.
The heater surface is burnt after being sprayed with unknown paint
6. Ceramic heaters are fragile products, so it is forbidden to bump or squeeze them during use, otherwise they may be damaged.
The heater is damaged due to extrusion