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Case & Guide
Vacuum Packaging Machine Not Working? 11 Common Problems & How to Fix Them
Vacuum packaging machines are essential equipment in food, pharmaceuticals, electronics, and other industries, widely used for product preservation, oxidation prevention, and shelf-life extension. However, prolonged operation may lead to malfunctions due to improper handling, component wear, or environmental factors, affecting production efficiency. This guide systematically covers common failure types, offering step-by-step troubleshooting and preventive maintenance tips to resolve issues quickly and extend equipment lifespan.
Typical faults include:
● Low Vacuum Level
● Poor Sealing
● Pump Overheating
● Abnormal Noise
● Complete Shutdown
Regular maintenance and proper operation can prevent over 80% of failures. The following sections detail causes and professional repair procedures.
1. The machine is completely inoperative
| CAUSE | SOLUTION |
|---|---|
| Power not connected | Check power supply |
| Low voltage | Increase voltage |
| Fuse blown | Replace fuse |
2. Low Vacuum or Air Leakage
| Cause (原因) | Solution |
|---|---|
| Vacuum pump reverse rotation | Swap any two power phases |
| Pump valve not sealing | Inspect pump valve |
| Solenoid valve leakage | Check YV1/YV2 valves |
3. The seal is weak or incomplete
| Cause | Solution |
|---|---|
| Incorrect sealing settings | Adjust KT2 timer & SA2 voltage |
4. Vacuum Chamber Lid Won't Open
| Cause | Solution |
|---|---|
| Solenoid valve not working | Inspect the id valve |
5. The vacuum pump does not turn on
| Cause | Solution |
|---|---|
| Wrong wiring/low voltage | Rewire/check voltage |
| Pump or motor jammed | Manually check the rotation |
| Oil too viscous (<5℃) | Preheat the oil to 30℃ |
6. Vacuum level stays below specification
| Cause | Solution |
|---|---|
| Contaminated oil | Run pump with closed intake |
| Oil seal leakage | Replace oil seal |
| Low oil level | Check oil level |
| Vanes stuck/worn | Replace vanes |
| Cause | Solution |
|---|---|
| 1. Degraded oil | 1. Replace with specified new oil |
| 2. Clogged exhaust filter | 2. Replace exhaust filter |
| Cause | Solution |
|---|---|
| 1. Overfilled oil | 1. Drain excess oil |
| 2. Incorrectly installed/damaged exhaust filter | 2. Reinstall or replace exhaust filter |
| 3. Clogged exhaust filter | 3. Replace exhaust filter |
| 4. Failed oil return valve or clogged return pipe | 4. Check oil return valve and clean return pipe |
9. Low Vacuum or Air Leakage
| Cause | Solution |
|---|---|
| 1. High ambient/inlet temperature | 1. Implement cooling measures |
| 2. Insufficient cooling airflow | 2. Clean cooling fins and ensure proper ventilation |
| 3. Excessive oil in pump | 3. Drain excess oil |
| 4. Insufficient oil level | 4. Refill to specified oil level |
| 5. Degraded oil quality | 5. Replace with specified new oil |
| 6. Contaminated exhaust filter | 6. Replace exhaust filter |
| Cause | Solution |
|---|---|
| 1. Low oil level | 1. Refill oil to proper level |
| 2. Clogged exhaust filter | 2. Replace exhaust filter |
| 3. Worn coupling cushion | 3. Replace coupling cushion |
| 4. Abnormal wear of vanes or pump body | 4. Replace worn components |
11. Pump Seizure
| Cause | Solution |
|---|---|
| 1. Dry running or broken vanes | 1. Repair the pump and replace vanes |
| 2. Prolonged reverse operation | 2. Correct rotation direction and replace damaged vanes |
| 3. Bearing seizure due to oil starvation or sleeve cracking | 3. Lubricate and replace failed components |
The stable operation of your vacuum packaging machine is critical to maintaining both production efficiency and product quality. While this troubleshooting guide equips you to resolve common issues, prevention always outperforms repairs, which is why FXFM, with XX years of industry leadership, delivers:
✅ Industrial-Grade Vacuum Packaging Machines – Military-spec components reduce failure rates by 60%
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✅ Complimentary Diagnostics & Training – Maximize uptime with expert operational guidance
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