Maintenance
11.0MAINTENANCE
Table 9 | Troubleshooting |
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| Problem | Cause | Solution | |
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| No Power | Confirm unit is plugged in and the building breaker has not | |
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| tripped. | ||
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| Clogged condenser coil | Clean coil. See 11.1 - Periodic Maintenance. | |
XDF system not cooling |
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Hot Gas bypass valve set | Contact Liebert Technical Support at | |||
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| incorrectly | ||
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| Refrigerant loss | Verify leak. If refrigerant system needs repaired, contact | |
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| Liebert Technical Support at | ||
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| Remove airflow obstructions from the front and rear of the | |
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| enclosure. Ensure the cabinet has at least 36" (915mm) | |
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| Airflow is blocked at the intake | front, rear and overhead clearance. (Water/glycol models | |
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| or exhaust. | do not require overhead clearance.) Open XDF’s doors and | |
Fans blowing warm air |
| let compressor cool. Plug in XDF and verify compressor is | ||
| energized. | |||
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| Compressor trips on thermal | Open XDF doors and let compressor cool. Plug in XDF and | |
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| overload | verify compressor is energized. | |
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| Faulty Compressor | Contact Liebert Technical Support at | |
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| Ensure that the enclosure rests on a level surface. The | |
Water leaking from inside | Cabinet not level or internal | cabinet must be level to ensure proper operation. Verify | ||
condensate drain is attached to drain and the drain line has | ||||
the cabinet | drain line clogged | |||
the proper pitch (see 4.5.4 - Condensate Drain | ||||
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| Connection). | |
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Excessive vibration or | Defective motor in blower or | Contact Liebert Technical Support at | ||
noise |
| shipping damage | ||
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| Electronic equipment not | Rearrange the equipment as illustrated in 4.7 - Equipment | |
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| positioned for optimum cabinet | ||
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| Layout. | ||
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| airflow | ||
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| Verify the UPS load does not exceed XDF’s capacity. If no | |
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| Compressor is overloaded | UPS, verify equipment load does not exceed the XDF’s | |
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| rating. | |
Cabinet is excessively hot | Heat not rejected from room | Verify that XDF is in room with air circulation and heat | ||
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| rejected from unit is sufficiently removed. | ||
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| XDF system not cooling | Confirm unit is plugged in and the building breaker has not | |
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| tripped. Check setpoints on iCOM controller. | ||
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| Check cable entry points, and verify doors and side panels | |
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| Cabinet not sealed | are closed. Reposition wires to prevent air leak, or fix or | |
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| replace damaged gaskets. | |
Audible alarm and cabinet | iCOM control module has | Silence alarm on the iCOM module. See solutions for “XDF | ||
system not cooling,” “Fans blowing warm air” and “Cabinet | ||||
is excessively hot | detected an abnormal condition | |||
is excessively hot causes” to determine course of action. | ||||
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11.1Periodic Maintenance
The Liebert XDF requires very little maintenance. The XDF’s condenser coil must be inspected peri- odically to determine the necessary cleaning interval based on conditions at the installation site. Depending on site conditions, the coil may require cleaning as often as twice a month or as seldom as twice per year. If the coil becomes dirty and clogged, it should be vacuumed with a soft bristle brush or cleaned with compressed air.
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