Emerson Liebert XDF - Manual (Page 54)

Maintenance
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11.0 M
AINTENANCE
11.1 Periodic 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.
Table 9 Troubleshooting
Problem Cause Solution
XDF system not cooling
No Power
Confirm unit is plugged in and the building breaker has not
tripped.
Clogged condenser coil Clean coil. See 11.1 - Periodic Maintenance.
Hot Gas bypass valve set
incorrectly
Contact Liebert Technical Support at 800-543-2378.
Refrigerant loss
Verify leak. If refrigerant system needs repaired, contact
Liebert Technical Support at 800-543-2378.
Fans blowing warm air
Airflow is blocked at the intake
or exhaust.
Remove airflow obstructions from the front and rear of the
enclosure. Ensure the cabinet has at least 36" (915mm)
front, rear and overhead clearance. (Water/glycol models
do not require overhead clearance.) Open XDF’s doors and
let compressor cool. Plug in XDF and verify compressor is
energized.
Compressor trips on thermal
overload
Open XDF doors and let compressor cool. Plug in XDF and
verify compressor is energized.
Faulty Compressor Contact Liebert Technical Support at 800-543-2378.
Water leaking from inside
the cabinet
Cabinet not level or internal
drain line clogged
Ensure that the enclosure rests on a level surface. The
cabinet must be level to ensure proper operation. Verify
condensate drain is attached to drain and the drain line has
the proper pitch (see 4.5.4 - Condensate Drain
Connection).
Excessive vibration or
noise
Defective motor in blower or
shipping damage
Contact Liebert Technical Support at 800-543-2378.
Cabinet is excessively hot
Electronic equipment not
positioned for optimum cabinet
airflow
Rearrange the equipment as illustrated in 4.7 - Equipment
Layout.
Compressor is overloaded
Verify the UPS load does not exceed XDF’s capacity. If no
UPS, verify equipment load does not exceed the XDF’s
rating.
Heat not rejected from room
Verify that XDF is in room with air circulation and heat
rejected from unit is sufficiently removed.
XDF system not cooling
Confirm unit is plugged in and the building breaker has not
tripped. Check setpoints on iCOM controller.
Cabinet not sealed
Check cable entry points, and verify doors and side panels
are closed. Reposition wires to prevent air leak, or fix or
replace damaged gaskets.
Audible alarm and cabinet
is excessively hot
iCOM control module has
detected an abnormal condition
Silence alarm on the iCOM module. See solutions for “XDF
system not cooling,” “Fans blowing warm air” and “Cabinet
is excessively hot causes” to determine course of action.