TROUBLESHOOTING GUIDE (CONT'D)
| PROBLEM | CAUSE | CORRECTION |
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Knocking noise | Restricted or defective check valve. | Remove and clean or replace. | ||
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| Loose pulley. | Torque pulley set screw, see page 10. | |
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| Low oil level. | Maintain prescribed oil level. Add oil. | |
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| Loose flywheel. | Torque screw | |
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| Loose compressor mounting screws. | Check screws. Torque as required (15- | |
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| 20 | |
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| Loose belt. | Tighten wing nut until it contacts the | |
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| washer, plus one more turn. | |
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| Belt too tight. | Adjust belt tension (see "Belt Replace- | |
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| ment".) | |
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| Carbon | Remove the head and valve plate. Clean | |
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| the valve plate and top of the piston. (Be | |
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| sure carbon does not fall into the cylin- | |
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| der.) Reassemble to | |
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| new gasket and torque screws. | |
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Motor will not run. | Motor overload protection switch has | Let the motor cool off and reset switch | ||
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| tripped. | by pressing the red button located on | |
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| the end of the motor. If the overload still | |
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| trips, check for defective capacitor. | |
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| Possible defective capacitor. | Return to Service Center for inspection | |
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| or replacement if necessary. | |
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| Possible defective motor. | Have checked at a local Authorized | |
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| Warranty Service Center. | |
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| Tank pressure exceeds pressure switch | Motor will start automatically when tank | |
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| pressure drops below | ||
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| of pressure switch. | |
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| Check valve stuck open - fails to relieve | Remove and clean, or replace. DO NOT | |
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| head pressure; motor cannot start. |
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| Loose electrical connections. | Check wiring connection inside pres- | |
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| sure switch and motor terminal box area. | |
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| Pressure release valve on pressure | 1. Check fuse box for blown fuse and | |
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| switch has not unloaded head pressure. | replace if necessary. Reset circuit | |
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| Paint spray on internal motor parts. | breaker. Do not use a fuse or circuit | |
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| breaker with higher rating than that | |
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| specified for your particular branch | |
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| circuit. | |
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| Loose electrical connections. | 2. Check for proper fuse; only Buss | |
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| "Fusetron" Type T fuses are | |
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| acceptable. | |
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| 3. Check for low voltage conditions. | |
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| 4. Remove check valve and clean or | |
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| replace if it is stuck open or closed. | |
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| 5. Disconnect any other electrical appli- | |
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| ances from circuit. The compressor | |
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| must operate on its own branch | |
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| Pressure release valve on pressure | circuit. | |
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| 6. Do not use an extension cord. Bleed | ||
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| switch has not unloaded head pressure. | the line by pushing the lever on the | |
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| pressure switch to the OFF | |
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| position, opening the pressure | |
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| Paint spray on internal motor parts. | release valve. If the valve still | |
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| doesn't open, it must be replaced. | ||
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| Have checked at an Authorized | |
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| Warranty Service Center. Do not | |
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| operate the compressor in the | |
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| spray area. See Flammable Vapor | |
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| Warning. | |
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12
