Component Operation and Maintenance
7.7Humidifier
7.7.1Infrared 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.
! 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.
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.
50
