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plastic dryer

Fault detection and troubleshooting methods of plastic resin dryer:

source：Plastic pellet dryer
Author：plastic dryer
time：2020年09月19日 10:52:32

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Fault detection and troubleshooting methods of plastic resin dryer:
Compared with the traditional hot air blower, the plastic resin dryer improves the influence of air humidity on the drying effect, can control the air humidity in a short time, improve the drying effect and shorten the drying time, and plays an important role. Therefore, in the process of using the plastic resin dryer, in order to avoid failures and delay production work, it is necessary to frequently perform fault detection on the dehumidification dryer.
The following is an introduction to the fault detection and troubleshooting methods of the plastic resin dryer:
1. When the plastic resin dryer is powered on:
After the system is powered on, if a fault occurs, the system cannot be turned on (no output), and the corresponding fault code is displayed, and corresponding fault handling is made. When the fault is eliminated, the system will return to the shutdown state and need to be restarted.
2. During the operation of the plastic resin dryer:

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1. Fan overload fault input
(Passive contact normally open signal, normal when disconnected, fault when closed) When an overload fault is detected, the fault indicator is off and on, the fan indicator is off, the system turns off heating, and the system stops all outputs. The heating relay is disconnected, plus the alarm relay output at the same time. The heat indicator is off, and the wind (on and off) wind alarm signal is turned off. When the fault of the machine relay is eliminated, the system returns to the shutdown state.
2. Overheating fault input of plastic resin dryer
(Passive contact normally open signal, normal when disconnected, fault when closed) When an overheating fault is detected, the fault indicator will be on, the system will immediately shut off the heating, the heating relay will be disconnected, and the heating indicator will be off, and the fan can work normally. At the same time, the alarm relay outputs (on-off) alarm signals. When the fault is eliminated, the system returns to the shutdown state.
3. Reverse phase failure
(Passive contact normally closed signal, that is, it is normal when it is closed, and it is fault when it is open) When the reverse phase is detected, the fault indicator light is on and the system stops all outputs. At the same time, the alarm relay outputs (on-off) alarm signals. When the fault is eliminated, the system returns to the shutdown state.
4. The fan does not turn and the hot air emits smoke
Mainly caused by the motor failure and the electromagnetic switch has been closed. The problem can be solved by checking and replacing the motor and repairing and replacing the electromagnetic switch. The cause of the failure is mainly caused by the fusion of the lead sheet connected to the heat pipe, no output, and thermocouple failure. It can be checked, replaced, and repaired. Troubleshoot. Electromagnetic switch failure, electric heating tube failure, thermostat failure!
6. The fan of the plastic resin dryer is running but the temperature is extremely high
It is mainly caused by blockage of the air duct, fault of the thermostat or too large error. Such faults can be eliminated by cleaning, replacing the thermostat or adjusting the fine-tuning button.
About the fault detection and troubleshooting methods of the desiccant dryer, I have introduced it here today. In order to ensure the normal operation of the dehumidification dryer, the dehumidification dryer needs to be tested and eliminated during the power-on or running process. In addition, it is necessary to note that the main power supply must be turned off when testing and replacing parts. .
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