The motor system of a waste plastic granulator often stops suddenly during use due to improper operation or operator errors, affecting normal production. This article addresses how to handle motor shutdown faults encountered during plastic granulation extrusion.
Waste Plastic Granulator Pelletizer Machine Video:
1. Engine Stops Automatically Without Overload After Normal Startup
1.1 Main Causes
After the engine of the waste plastic pelletizing machine is started normally, if it stops automatically without overload indication and the engine operation button indicator light on the control panel is not lit, the primary cause is DC power failure or low voltage. This leads to release of the control contactor or DC relay.
In such cases, the waste plastic granulator generally shows no alarm, and the engine stops automatically.
1.2 Troubleshooting and Repair
First, check whether the DC power supply of the waste plastic pelletizing machine is functioning properly. Determine if low voltage is causing the contactor or its controlling DC relay to release.
Inspect the 7824 integrated circuit and the 24V filter capacitor for faults. If any fault is detected, repair or replace the affected electrical components promptly.
A plastic granulator uses multiple motors of various types and sizes. A typical production line is configured with 8 to 12 motors. Therefore, motor power cables must be arranged rationally, safely, and reliably to ensure normal operation and personnel safety.
2. Engine Stops Automatically During Normal Operation
2.1 Main Cause
If the engine stops automatically while the waste plastic pelletizer is melting and plasticizing material, and the engine operation button indicator light on the panel is off, the main cause is poor contact or damage to the engine contactor.
2.2 Troubleshooting and Repair
Poor contact or damage to the engine contactor can usually be resolved by repairing or replacing the contactor.
In one case, a waste plastic granulator kept stopping automatically during production. Pressing the engine button would sometimes restart it, but the motor would stop again after a period of time. Inspection revealed poor contact of the engine contactor. After replacement, the granulator returned to normal operation.
When a waste plastic pelletizing machine experiences motor failure while processing waste film or woven bags, feeding should be stopped immediately. Perform maintenance promptly and avoid unsafe operation.
Conclusion and Further Assistance
Understanding the electrical behavior of granulator drive systems under varying loads and material conditions is essential for minimizing unplanned downtime. Systematic voltage monitoring and contactor inspection should be part of routine maintenance schedules.
For more waste plastic granulator fault diagnostics or customized drive system recommendations, please consult your equipment integrator or refer to the machine-specific electrical schematics. For further support, please contact us.
To better provide you with a professional answer, when sending an inquiry, please describe your parameters or technical requirements (such as processing materials, output size, capacity, etc.). We will reply as soon as possible.
