| Problem – Incorrect Ratio – Lacking Isocyanate | ||
| SYMPTOM | CAUSE | SOLUTION |
| White spray and/or soft foam | Restriction | If high pressure on Isocyanate pressure gauge check between gun and console |
| Starvation | Check from console to material supply system | |
| Alternate white bursts and/or soft foam | Intermittent starvation | Check pumps on Isocyanate side |
| Problem – Incorrect Ratio – Lacking Polyol | ||
| SYMPTOM | CAUSE | SOLUTION |
| Dark spray and/or brittle foam | Restriction | If high pressure on Polyol pressure gauge check between gun and console |
| Starvation | Check from console to material supply system | |
| Alternate dark bursts and/or brittle foam | Intermittent starvation | Check pumps on Polyol side |
| Problem – Incorrect Temperature – Low temperature | ||
| SYMPTOM | CAUSE | SOLUTION |
| Stream of material not a spray and/or foam not fully expanded | Incorrect setting | Increase as necessary |
| Electrical fault | Troubleshoot electrically | |
| Problem – Incorrect Temperature – High temperature | ||
| SYMPTOM | CAUSE | SOLUTION |
| Popcorn appearance on foam surface | Incorrect setting | Reduce as necessary |
| Electrical fault | Troubleshoot electrically | |
| Problem – Incorrect Mixing – Low pressure | ||
| SYMPTOM | CAUSE | SOLUTION |
| Large droplets, small spray pattern and/or Foam not fully expanded | Incorrect setting | Increase pressure at proportioning unit |
| Starvation | Check from console to material supply system | |
| Pump fault | Repair as necessary | |