Vertiv Liebert PDX - Humidifier Start-up, Operation, and Maintenance

Enclosure F - Infrared Humidier
F - 2 Liebert
®
PDX, EconoPhase Version - UM - 265133 - 29.08.2019
F. 3 - Start - up and operation
F. 3.1 - Start - up
Before using the humidier, check the following:
• Supply and drain connections.
• That the cut- o󰀨 tap is open.
• All wiring.
• Earthing.
To start the humidier simply switch on the air conditioner, which will, in turn, automatically start and stop the humidier as required. The
(adjustable) parameters which determine humidier operation have already been factory- preset (see iCOM manual).
F. 3.2 - Operation
During normal humidier operation, deposits of mineral solids will collect in the humidier pan and on the oat switch. These must be
cleaned periodically to ensure proper operation. Frequency of cleaning must be locally established because it depends on humidier
usage and local water quality.
A spare pan is recommended to reduce maintenance time at unit. The Liebert auto-ush system can greatly increase the time between
cleanings, but does not eliminate the need for periodic checks and maintenance.
F. 4 - Maintenance
WARNING: Optical radiation; the humidier components may be hot. Let it cool down before touching it or
use protective gloves.
The infrared humidier contains live electrical components and hot surfaces and therefore all service and/or maintenance operations must
be performed by expert and qualied personnel, who are aware of the necessary precautions.
Before performing any operations, check that the humidier is disconnected from the power supply; carefully read and follow the
instructions contained in the manual.
F. 4.1 - Cleaning Humidier Pan and Float Switch
Before turning o󰀨 unit:
1. With the unit operating, remove call for humidication at the Liebert iCOM control.
2. Let the blower operate 5 minutes to allow the humidier and water to cool.
3. Turn the unit O󰀨 at the Liebert iCOM control.
4. Open the air conditioner door and remove safety panels, if installed.
5. Pull out the humidier standpipe in pan.
6. Inspect the O- ring (replace if necessary).
7. Let the pan drain and the condensate pump operate (if applicable).
8. Disconnect power from the unit.
9. Disconnect the drain coupling from the bottom of the pan.
10. Remove the thermostat from the bottom of the pan and retaining screws from sides of pan.
11. Slide pan out.
12. Loosen scale on the side and bottom of the pan with a sti󰀨 nylon brush or plastic scraper.
13. Flush with water.
14. Carefully clean the scale from the oat switch (make sure to reinstall correctly; see Figure 2).
15. Reinstall the pan, thermostat, standpipe, drain coupling, cover and screws into the humidier.
16. Operate the humidier and check for leaks.
Fig. 2 - Correct orientation of oat switch
Correct Switch OrientationIncorrect Switch Orientation