![](/images/new-backgrounds/1260642/26064237x1.webp)
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may be exposed to volt-
age sources, compressed air, or moving parts. Before servicing unit unplug or disconnect electrical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool.
| PROBLEM | CAUSE |
| CORRECTION | ||||
| Excessive tank | Pressure switch does not | Move On/Auto/Off lever to | |||||
| pressure - safe- | shut off motor when com- | the "OFF" position, if the | |||||
| ty valve pops | pressor reaches | unit does | |||||
| off. | pressure. | not shut off contact a | |||||
|
|
| Trained Service Technician. | |||||
|
| Pressure switch | Contact a Trained Service | |||||
|
| too high. | Technician. | |||||
|
|
|
|
|
|
|
|
|
| Air leaks at | Tube fittings are not tight | Tighten fittings where air can | |||||
| fittings. | enough. | be heard escaping. Check | |||||
|
|
| fittings with soapy water | |||||
|
|
| solution. DO NOT OVER- | |||||
|
|
| TIGHTEN. | |||||
|
|
|
| |||||
| Air leaks at or | Check valve seat damaged. | A defective check valve | |||||
| inside check |
| results in a constant air leak | |||||
| valve. |
| at the pressure release valve | |||||
|
|
| when there is pressure in the | |||||
|
|
| tank and the compressor is | |||||
|
|
| shut off. Replace check | |||||
|
|
| valve. Refer the "To Replace | |||||
|
|
| or Clean Check Valve" in the | |||||
|
|
| "Service and Adjustment" | |||||
|
|
| section. | |||||
|
|
|
|
|
|
|
|
|
| Air leaks at | Defective pressure switch | Contact a Trained Service | |||||
| pressure switch | release valve. | Technician. | |||||
| release valve. |
|
|
|
|
|
|
|
| (if equipped) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Air leaks in air | Defective air tank. | Air tank must be replaced. | |||||
| tank or at air |
| Do not repair the leak. | |||||
| tank welds. |
|
|
|
|
| Risk of | |
|
|
|
|
|
| |||
|
|
|
|
|
| |||
|
|
|
|
|
|
| Bursting. | |
|
|
|
|
|
|
| ||
|
|
| Do not drill into, weld or | |||||
|
|
| otherwise modify air tank | |||||
|
|
| or it will weaken. The tank | |||||
|
|
| can rupture or explode. | |||||
|
|
|
|
| ||||
| Air leaks | Leaking seal. | Contact a Trained Service | |||||
| between head |
| Technician. | |||||
| and valve plate. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
19- ENG | D28071 |