AD-IP™ AIR DRYER TROUBLESHOOTING CHART (Continued)
| SYMPTOMS | CAUSE | REMEDY |
8. | Desiccant material being | A. This symptom is almost | A. See Causes and Remedies for Symptoms 1, 2, |
| expelled from air dryer | always accompanied by | 3, 4 and 5. |
| purge valve exhaust | one or more of |
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| (may look like whitish | Symptoms 1, 2, 3, 4 and |
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| 5. See related causes for |
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| liquid or paste or small |
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| these symptoms above. |
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| beads.) |
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| - OR - |
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| B. Air dryer not securely | B. Vibration should be held to minimum. Add | |
| Unsatisfactory desiccant | ||
| mounted. (Excessive | bracket supports or change air dryer mounting | |
| life. | vibration.) | location if necessary. |
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| C. Malfunctioning or | C. Replace desiccant cartridge assembly. |
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| saturated desiccant |
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| cartridge. |
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| D. Compressor passing | D. Check for proper compressor installation; if |
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| excessive oil. | symptoms persist, replace compressor. |
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| E. Desiccant cartridge not | E. Check the torque on the desiccant cartridge |
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| assembled properly to | to end cover attachment. Refer to assembly |
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| end cover. (Loose | section of this data sheet. |
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| attachment) |
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9. | “Pinging” noise | A. Single cylinder | A. A slight “pinging” sound may be heard during |
| excessive during | compressor with high | system build up when a single cylinder |
| compressor loaded | pulse cycles. | compressor is used. If this sound is deemed |
| cycle. |
| objectionable, it can be reduced substantially |
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| by increasing the discharge line volume. |
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| This can be accomplished by adding an |
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| additional four feet of discharge line or adding a |
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| 90 cubic inch reservoir between the compressor |
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| and the |
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| exceed the line lengths requirements specified |
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| in this manual. |
10. Constant seepage of air | A. Defective check valve | A. Refer to Remedy C, Symptom #1. | |
| at air dryer purge valve | assembly in |
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| exhaust | dryer end cover. |
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| mode.) |
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| B. Leaking Turbo Cutoff | B. Repair or replace purge valve assembly. | |
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| valve. |
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| C. Leaking purge valve | C. Repair or replace purge valve assembly. |
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| control piston |
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11. The air dryer purge | A. Compressor fails to | A. Faulty governor installation; no air line from | |
| piston cycles rapidly in | “unload”. | governor to compressor or line is kinked or |
| the compressor |
| restricted. Install or repair air line. |
| unloaded (non- |
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| compressing) mode. |
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23
