Troubleshooting Guide
Comprehensive diagnostic resources and expert solutions to keep your vacuum pumps and compressors running at peak performance.
Common Issues & Solutions
Comprehensive troubleshooting reference for rapid diagnosis and resolution of equipment issues
Diagnostic Reference Table
Quick troubleshooting guide for vacuum pumps and compressors
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
|
1
The unit does not start
|
Power supply failure / loose connection / motor overload | Check voltage and connection; reset overload protection; ensure power phase sequence is correct. |
|
2
Low vacuum or pressure
|
Air leakage, blocked inlet filter, or worn sealing components | Inspect piping and fittings for leaks; clean or replace filters; check seals. |
|
3
Abnormal noise during operation
|
Foreign objects in air path or bearing wear | Stop operation immediately, remove foreign materials, and check bearings. |
|
4
High temperature or overheating
|
Poor ventilation, excessive back pressure, or high ambient temperature | Ensure sufficient cooling space; check discharge piping; clean cooler if necessary. |
|
5
Insufficient air flow
|
Clogged filter or incorrect inlet size | Clean filters and verify that piping size matches the rated flow. |
|
6
High vibration
|
Unstable foundation or misalignment | Re-level base and tighten mounting bolts; check for unbalanced rotor. |
|
7
Oil or moisture in discharge air
|
Condensation in system / incorrect filter selection | Drain condensate regularly and ensure proper air treatment system. |
|
8
Frequent start/stop cycles
|
Small air tank volume or incorrect control settings | Adjust control parameters; increase air receiver capacity. |
|
9
Pressure fluctuation
|
Inlet restriction or unstable power supply | Inspect suction pipeline and ensure stable voltage. |
|
10
Alarm or fault indicator on
|
Temperature / pressure / current beyond limit | Check system parameters; reset control panel after issue is resolved. |
The unit does not start
Power supply failure / loose connection / motor overload
Check voltage and connection; reset overload protection; ensure power phase sequence is correct.
Low vacuum or pressure
Air leakage, blocked inlet filter, or worn sealing components
Inspect piping and fittings for leaks; clean or replace filters; check seals.
Abnormal noise during operation
Foreign objects in air path or bearing wear
Stop operation immediately, remove foreign materials, and check bearings.
High temperature or overheating
Poor ventilation, excessive back pressure, or high ambient temperature
Ensure sufficient cooling space; check discharge piping; clean cooler if necessary.
Insufficient air flow
Clogged filter or incorrect inlet size
Clean filters and verify that piping size matches the rated flow.
High vibration
Unstable foundation or misalignment
Re-level base and tighten mounting bolts; check for unbalanced rotor.
Oil or moisture in discharge air
Condensation in system / incorrect filter selection
Drain condensate regularly and ensure proper air treatment system.
Frequent start/stop cycles
Small air tank volume or incorrect control settings
Adjust control parameters; increase air receiver capacity.
Pressure fluctuation
Inlet restriction or unstable power supply
Inspect suction pipeline and ensure stable voltage.
Alarm or fault indicator on
Temperature / pressure / current beyond limit
Check system parameters; reset control panel after issue is resolved.
Need expert assistance with a specific issue?
Contact Our Expert Team
Professional oil-free technology solutions for your industrial applications
Direct Contact
Email Sales Team
sales@shichang.com24/7 Technical Support
+86 138 0000 0000WhatsApp Inquiry
+86 138 0000 0000Factory Location
Shichang Industrial Park
Shanghai, China
Quick Links
Business Hours
Monday - Friday: 8:00 AM - 6:00 PM CST
24/7 Emergency Support Available