Teflon Duct Maintenance and Service Manual

## 1. Daily Checks

### 1.1 Visual Inspection
- Weekly inspection of the external surface of air ducts for scratches and corrosion
- Check for loose flange connections
- Check for abnormal vibrations or noises

### 1.2 Cleaning & Care
Wipe off surface dust with a soft cloth.
- Avoid using stiff brushes or abrasive cleaners
- Regularly clean dust buildup to ensure proper airflow

## 2. Regular Inspections

### 2.1 Monthly Check
- Check bracket fixation
- Test valve opening and closing flexibility
- Log operating temperature and pressure

### 2.2 Annual Check
- Inspect duct wall thickness comprehensively
Replace worn-out seals
- Conduct system performance testing

## 3. Common Troubleshooting

### 3.1 Air Leakage Issue
- Tighten flange bolts
Replace gasket
- Repair damaged areas

### Excessive vibration at 3.2
- Check if hangers and supports are loose
- Adjust fan speed
- Add vibration damping device