Maintenance
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9.0 MAINTENANCE
Minimal maintenance is required to keep the Liebert XDH operating at optimal levels. The unit
should be cleaned and checked for damage and worn parts. Suggested maintenance includes:
• Cooling fins—Clean any dust and debris from the cooling fins, taking care not to bend them
• Circulating fans—Clean any dust from the fans.
9.1 Internal Access
The conditions required for sensitive electronic equipment should preclude the accumulation of appre-
ciable amounts of dust in the Liebert XDH. Most of that small amount should be found on the coils,
which are accessible by opening the rear door of the unit. The fans, on the front may be cleaned by
removing the front grilles, which are secured with snap-on connections.
The rear door and the fan tray on the front of the Liebert XDH are easily removed for maintenance. (A
wiring diagram is provided on the center shelf.)
9.2 Fluorinated Greenhouse Gas Requirements
Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys-
tems in the European Community market and operating with fluorinated greenhouse gases (f-gas),
such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas).
The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo-
sphere.
The F-Gas Regulation requires operators to use use all measures that are technically feasible and do
not entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to
recover f-gas during equipment service and maintenance and before disposing of equipment.
Refer to the full regulation for additional details.
!
WARNING
Risk of electric shock. Can cause injury or death.
System contains hazardous electrical voltage. Disconnect both power cords from the electrical
supply outlets or from the receptacles on the back of the Liebert XDH before working within.
• Turn off the two fan switche s on the front of the Liebert XDH (see Figure 26).