Emerson Liebert Challenger With Liebert iCOM Control 3000/ITR - Manual (Page 56)

Component Operation and Maintenance
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7.7 Humidifier
7.7.1 Infrared Humidifier
During normal humidifier operation, deposits of mineral solids will collect in the humidifier pan. This
should be cleaned out periodically to ensure efficient operation. Each water supply has different char-
acteristics, so the time interval between cleanings must be determined locally. A monthly check (and
cleaning if necessary) is recommended.
Removing the Pan
To remove humidifier pan, first open disconnect switch and open front panel. Allow time for pan and
water to cool. Unlatch front retainer clip (or remove screw from bracket on some units). Pull pan for-
ward. Remove stand pipe to allow pan to drain. Disconnect drain line. Pull pan forward to remove it.
Cleaning the Pan
An autoflush system can greatly increase the time between cleanings but does not eliminate the need
for periodic checks and maintenance.
Scale on the side and bottom can be loosened with a stiff brush. Flush with water and replace pan in
humidifier.
!
WARNING
Risk of electric shock and contact with hot liquids. Can cause injury or death.
The Liebert iCOM microprocessor does not isolate power from the unit, even in the “Unit Off”
mode. Some internal components require and receive power even during the “Unit Off” mode
of Liebert iCOM control.
The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch. Refer to unit electrical schematic.
Before removing pan, be sure power is disconnected from the unit and water in the humidifier
pan is no hotter than lukewarm.