TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may be exposed to voltage sources, com- pressed air, or moving parts. Before servicing unit unplug or disconnect elec- trical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool.
PROBLEM | CAUSE |
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| CORRECTION | |
Excessive | Pressure switch does |
| Move Auto/Off lever to the "Off" | |||
tank pressure | not shut off motor when |
| position, if the unit does not shut off | |||
- safety valve | compressor reaches |
| contact a Trained Service Technician. | |||
pops off |
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| Pressure switch "cut- |
| Contact a Trained Service Technician. | |||
| out" too high. |
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Air leaks at | Tube fittings are not |
| Tighten fittings where air can be | |||
fittings | tight enough. |
| heard escaping. Check fittings | |||
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| with soapy water solution. DO | |||
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| NOT OVER TIGHTEN. | |||
Air leaks at | Check valve seat |
| A defective check valve results in | |||
or inside | damaged. |
| a constant air leak at the pressure | |||
check valve |
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| release valve when there is pressure in | |||
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| the tank and the compressor is shut | |||
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| off. Replace check valve. Refer the To | |||
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| Replace or Clean Check Valve in | |||
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| the Service and Adjustments section. | |||
Air leaks at | Defective pressure |
| Contact a Trained Service Technician. | |||
pressure switch | switch release valve. |
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release valve |
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Air leaks in air | Defective air tank. |
| Air tank must be replaced. | |||
tank or at air |
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| Do not repair the leak. | |||
tank welds |
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| Risk of bursting. |
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| Do not drill into, weld or otherwise | |||
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| modify air tank or it will weaken. The | |||
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| tank can rupture or explode. | |||
Air leaks | Leaking seal. |
| Contact a Trained Service Technician. | |||
between head |
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and valve plate |
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Pressure | It is normal for "some" |
| If there is an excessive amount of | |||
reading on | pressure drop to occur. |
| pressure drop when the accessory | |||
the regulated |
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| is used, adjust the regulator as | |||
pressure gauge |
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| instructed in the Operation section. | |||
(if equipped) |
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| NOTE: Adjust the regulated | |||
drops when |
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| pressure under flow conditions | |||
an accessory |
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| (while accessory is being used). | |||
is used |
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Air leak from | Possible defect in |
| Operate safety valve manually | |||
safety valve | safety valve. |
| by pulling on ring. If valve still | |||
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| leaks, it should be replaced. | |||
20 - ENG
