TROUBLE SHOOTING
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| Jet Spray (Cold) Training Manual | ||
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| PROBLEM (fault) |
| CAUSE (diagnosis) |
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| ACTION (remedy) |
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| 5. Unit runs OK but short- | A. Overload protector |
| A. See “Compressor starts | ||
| cycles on |
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| but then |
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| on overload protector” |
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| above |
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| B. Thermostat |
| B. Widen differential | ||
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| 6. Unit operates long or | A. Refrigerant low |
| A. Fix leak and charge | ||
| continuously | B. Control contacts stuck |
| B. Clean contacts or | ||
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| closed |
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| replace control |
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| C. Refrigerated or air con- |
| C. Correct problem | ||
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| ditioned space has |
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| excessive load or poor |
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| insulation |
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| D. System is inadequate to |
| D. Replace with larger | ||
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| handle the load |
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| system |
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| E. | Evaporator coil iced |
| E. | Defrost |
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| F. | Restriction in refrigera- |
| F. | Determine location and |
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| tion system |
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| remove |
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| G. Dirty condenser |
| G. Clean condenser | ||
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| H. Filter dirty |
| H. Clean or replace filter | ||
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| 7. Relay defective or | A. Incorrect relay |
| A. Replace with correct | ||
| burned out |
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| relay |
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| B. Incorrect mounting |
| B. Remount in correct | ||
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| angle |
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| position |
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| C. Line voltage too high |
| C. Correct problem | ||
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| or low |
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| D. Excessive short cycling |
| D. Correct problem (see | ||
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| “Unit runs OK but |
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| E. Relay mounting loose |
| E. Mount correctly | ||
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| F. | Incorrect run capacitor |
| F. | Replace with correct |
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| capacitor |
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| 8. Suction line frosted or | A. Refrigerant overcharge |
| A. Correct charge | ||
| sweating |
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| 9. Liquid line frosted or | A. Restriction in dehydra- |
| A. Replace bad part | ||
| sweating |
| tor or strainer |
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© 2000, IMI Cornelius Inc. | - 17 - |
