PROBLEM | CAUSE | CORRECTION |
Knocking Noise | Possible defect in | Operate safety valve manually |
| safety valve. | by pulling on ring. If valve still |
|
| leaks, it should be replaced. |
| Defective check valve. | Remove and clean, or replace. |
| Loose pulley. | Tighten pulley set screw. |
| Loose flywheel. | Tighten flywheel screw. |
| Compressor mounting | Tighten mounting screws. |
| screws loose. |
|
| Loose belt. | Loosen wingnut and then |
|
| tighten wingnut until it contacts |
|
| the washer, plus one turn. |
| Carbon build- | Have checked by a Trained |
| up in pump. | Service Technician. |
| Belt too tight. | Loosen wingnut and then |
|
| tighten wingnut until it contacts |
|
| the washer, plus one turn. |
Excessive | Loose belt. | Loosen wingnut and then |
belt wear |
| tighten wingnut until it contacts |
|
| the washer, plus one turn. |
| Tight belt. | Loosen wingnut and then |
|
| tighten wingnut until it contacts |
|
| the washer, plus one turn. |
| Loose pulley. | Have checked by a Trained |
|
| Service Technician. |
| Pulley misalignment. | See Motor Pulley/Flywheel |
|
| Alignment paragraph in the |
|
| Maintenance section. |
Squealing | Compressor pump | See |
sound | has no oil. | in the Maintenance section. |
| Loose belt. | Loosen wingnut and then |
|
| tighten wingnut until it contacts |
|
| the washer, plus one turn. |
22 - ENG
