TROUBLESHOOTING GUIDE
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE COM- PRESSOR AND BLEED OFF TANK AIR PRESSURE.
PROBLEM | CAUSE | CORRECTION |
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Excessive tank pressure - safety | Pressure switch does not shut off | Move the pressure switch lever to the “O” |
valve pops off. | motor when compressor reaches | position. If the compressor doesn’t shut off, |
| disconnect from the electrical outlet source | |
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| and return to a Sears Service Center to re- |
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| place the pressure switch. |
| Pressure switch | Return the compressor to Sears Service Cen- |
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| ter to check and adjust, or replace switch. |
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Air leaks at fittings or hose. | Tube or hose fittings are not tight | Tighten fittings using teflon tape where air |
| enough. | can be heard escaping. Check fittings with |
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| soapy water solution. DO NOT OVER- |
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| TIGHTEN. |
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Air leaks at pressure switch | Defective pressure switch release valve. | Return to Sears Service Center for replace- |
release valve. |
| ment of pressure switch. |
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| Check to see if the pin in the bottom of the |
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| pressure release valve is stuck. If it does not |
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| move freely, return to the Service Center for |
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| replacement of pressure switch. |
| Defective or dirty check valve. | A defective check valve results in a constant |
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| air leak at the pressure release valve when |
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| there is pressure in the tank and the com- |
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| pressor is shut off. Remove and clean or re- |
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| place check valve. DO NOT OVERTIGHTEN. |
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Air leaks in air tank or at air tank | Defective air tank. | Air tank must be replaced. Do not repair the |
welds. |
| leak. Return compressor to Sears Service |
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| Center. |
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| DO NOT DRILL INTO, WELD OR OTHER- |
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| WISE MODIFY AIR TANK OR IT WILL |
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| WEAKEN. THE TANK CAN RUPTURE OR |
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| EXPLODE. |
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Air leaks between head and valve | Leaking seal. | Torque head screws to |
plate. |
| does not stop leak, replace seal. |
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Pressure reading on the regu- | It is normal for some pressure drop | If there is an excessive amount of pressure |
lated pressure gauge drops when | to occur. | drop when the accessory is used, adjust the |
an accessory is used. |
| regulator. |
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| NOTE |
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| Adjust the regulated pressure under flow |
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| conditions (while accessory is being used). |
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Air leak from safety valve. | Possible defect in safety valve. | Operate safety valve manually by pulling |
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| on ring. If valve still leaks, it should be |
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| replaced . |
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Knocking noise | Defective check valve. | Remove and clean, or replace. |
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