Various faults and issues may arise whilst operating a
cable wire recycling machine. These faults can directly affect the equipment’s normal operation and processing efficiency. Below are common problems with cable recycling machines and an analysis of their causes. If you have any questions regarding cable and wire recycling machines, please contact me on:
+86 18695875708 (Tel/WhatsApp).
1. Incomplete shredding, resulting in large particle sizes.
- Severe wear on cutting blades: After prolonged use, the blades inside the shredder gradually become blunt or damaged, preventing the cable from being shredded effectively.
- Excessive blade clearance: The gap between the blades is too wide, preventing the material from being adequately shredded.
- Raw material dimensions too large: The diameter of the scrap wires and cables exceeds the maximum size that the equipment can process and shred.
Solution: Regularly inspect and replace severely worn blades. Adjust the blades to the correct clearance. Ensure the material meets the shredder’s processing requirements.
2. Low sorting purity
- Incorrect adjustment of air-gravity separator parameters: If the parameters of the air-gravity separator are not set correctly, this may result in incomplete separation of the copper and plastic mixture.
- Incorrect vibration frequency or screen mesh size: The vibration frequency or screen mesh size of the vibrating screen is not suited to the characteristics of the current cable material, thereby affecting the sorting efficiency.
Solutions: The technical parameters of the air classifier must be checked and adjusted. Adjust the vibration frequency of the vibrating screen or change the mesh size as required.
3. High levels of dust during production operations
- Clogging of the pulse dust collector: The pulse dust collector has not been cleaned promptly for an extended period. Dust has accumulated inside the equipment, thereby affecting its dust removal efficiency.
- Poor sealing: Inadequate sealing at the pipe connections within the equipment, leading to dust leakage.
Solutions: Clean the pulse dust collector regularly to ensure it operates normally. Inspect and repair any sealing issues to prevent dust from escaping.
4. Low operational efficiency
- Ageing or damaged equipment components: Key components of the entire system, such as bearings and belts, may become loose or worn over time.
- Electrical system faults: Motor faults, malfunctioning control system switches, current overload protectors in trip mode, faulty AC contactors, damaged or broken wiring, and fault indicators on variable frequency drives.
Solutions: Mechanical components require regular inspection and maintenance. Replace aged parts promptly. Electrical issues must be diagnosed and repaired by qualified personnel.
5. Contamination by metallic foreign objects
- Accidental introduction of metallic foreign objects: Unexpected metallic materials, such as screws or metal patches, may become mixed in during the feeding process. This may cause internal damage to the equipment.
Solution: Before feeding, raw materials must be carefully screened to prevent the introduction of unwanted metallic substances. Metal detectors may also be installed to detect and remove potential metallic foreign objects in advance.
6. Difficulty in starting the equipment
- Incorrect start-up sequence: Feeding material before switching on the machine, or feeding too much material at once, can cause the crushing chamber to become blocked.
- Power supply issues: Missing phase in the three-phase supply, insufficient voltage, burnt-out power supply units, or incorrectly connected power cables.
Solution: Ensure that the correct start-up sequence is followed. Feed the material evenly. Check the power supply status. If necessary, have an electrician inspect the circuit and relevant electrical components.
7. Excessive Noise During Production
- Loose fasteners: Bolts, nuts or other fasteners on the equipment are loose, causing additional vibration and noise.
- Insufficient lubrication: Lack of necessary lubricating oil increases friction noise between moving parts.
Solution: Regularly inspect the condition of all fasteners and tighten them as required. Add an appropriate amount of lubricating oil at regular intervals to reduce friction.
