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Instruction manual for temperature limiter
K series temperature limiter (also known as thermal circuit breaker) is a product approved by China National Food Service Machinery Quality Supervision and Inspection Center and passed the electrical safety test. The product has a novel structure, convenient installation, high reliability, and wide range of use. Features. It is used on various types of oven machinery and equipment. When the over-temperature is reached, the power supply of the heating wire in the furnace is cut off in time to prevent the safety device of the equipment from burning out when the temperature is too high.
The K-type temperature limiter is electronically designed and uses a k-type thermocouple as a temperature sensor, which makes the product meet the requirements of overheat protection regardless of accuracy, sensitivity and reliability, and the limit temperature is wide. Use within the temperature limit of ~ 1300 ° C.
I. K type temperature limiter wiring: (as shown below)
According to the connection requirements of the wiring diagram on the temperature limiter, the magnitude can control four temperature limits at the same time. The working power of the temperature limiter is the general 220V three positive 80V power supply, and the output normally closed end is the control. This end controls the AC contactor power supply in the furnace. When the furnace temperature exceeds the rated value, the limiter starts the power of the normally closed end-open contactor. The heating wire in the furnace stops heating. After the normally closed end is disconnected, the normally open end is turned on. The normally open end can also be connected to the alarm output according to user needs. Or beep alarm, but pay attention to the power wiring of the alarm actuator.
Second, selection: The temperature range of the temperature limiter is generally selected based on the full range of the instrument on the oven over 60C. That is, the thermometer used is 300 ° C, the specification of the temperature limiter is 360 ° C, and the model is K-360; if the thermometer is 400 ° C, the specification of the temperature limiter is 460 ° C, and the model is K-460 Type and so on. The single input of the temperature limiter is added after the model; double input is added after the model; -2; three inputs are added after the model; -3; four inputs are added after the model;
Such as: Model: K-360-2
3. Operation and use: After the temperature limiter is connected to power according to the requirements, the safety indicator lights up green, then it works normally (be sure to pay attention to the use of the voltage limiter when the temperature limiter is used); if the temperature in the furnace exceeds the temperature limiter of the temperature limiter Range, the temperature limiter turns off the green light, and the temperature limiter is limited. In this case, the main control normally closed end is in a long-term disconnected state before the main power is disconnected. You must perform a power-off and power-on process. , This process can be repeated at intervals of more than 30 seconds
When the power is turned on again, the normally closed end of the main control can be connected, and the contactor can work normally. Please do not easily turn on the power before there is an exhaustive fault. The temperature limiter may be limited again. If the troubleshooting time is too short and the power is turned on, the temperature limiter safety indicator may not turn on. The reason is that the temperature in the furnace is too high after the temperature limiter cuts off the power, and the temperature limiter exceeds the limit temperature range and causes the limit to be again Please ask the user to open the furnace door to lower the temperature in the furnace before turning on the power. In special cases, if the temperature limiter is damaged, users can continue to use it. You can turn the temperature limiter switch to the OFF position to turn off the temperature limiter, but it cannot be used for a long time to avoid affecting the safety of the device.
If the user applies the operating instructions of the thermostat correctly, it will surely become your safety guard!
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