| Problem |
| Possible Cause |
| Solution |
6. | Substrate Cracking— | 1. | Mishandling or abuse | 1. | Handle with care |
| Mechanical |
|
|
|
|
7. | Substrate Crumbling | 1. | Extreme thermal shock | 1. | Combustor being contin- |
|
|
|
|
| ually overfired. Reduce burn |
|
|
|
|
| rate. |
|
| 2. | High draft | 2. | Do not exceed .06” of water |
|
|
|
|
| draft. Install a manual |
damper and draft gauge, or a barometric damper with
8. Color Variations | 1. Variation in color from |
| combustor to combustor or |
| within a combustor can |
| occur (new combustors) |
1.These color variations are normal and do not affect combustor performance
