User Manual
Table Of Contents
- Important Safety Instructions
- SAVE THESE INSTRUCTIONS
- 1.0 Introduction
- 2.0 Startup
- 3.0 Operation with iCOM Control
- 4.0 Liebert iCOM Display Components and Functions
- Figure 2 Liebert iCOM display components
- Table 1 Keyboard icons and functions
- Figure 3 Liebert iCOM default screen symbols
- 4.1 Navigating Through the Liebert iCOM Display
- 4.2 Changing Operational Settings
- 4.3 Changing Liebert iCOM’s Display Settings
- 4.4 Graphical Data Record
- 4.5 Liebert iCOM Service Menu Icons and Legend
- 4.6 Wiring for Unit-to-Unit Communications—U2U
- 4.7 Entering Network Setup Information
- 4.8 Viewing Multiple Units with a Networked Large Display
- 5.0 Operation
- 6.0 Alarm Descriptions
- 6.1 Standard Alarms
- 6.1.1 Change Filter
- 6.1.2 Compressor Overload
- 6.1.3 High Head Pressure
- 6.1.4 High Humidity
- 6.1.5 High Humidity and Low Humidity (Simultaneously)
- 6.1.6 High Temperature
- 6.1.7 High Temperature and Low Temperature (Simultaneously)
- 6.1.8 Humidifier Problem
- 6.1.9 Loss of Air Flow
- 6.1.10 Loss of Power
- 6.1.11 Low Humidity
- 6.1.12 Low Suction Pressure
- 6.1.13 Low Temperature
- 6.1.14 Main Fan Overload
- 6.1.15 Short Cycle
- 6.2 Optional Alarms
- 6.3 Set Alarms—User Menus
- 6.1 Standard Alarms
- 7.0 Component Operation and Maintenance
- 7.1 System Testing
- 7.2 Filters
- 7.3 Blower Package
- 7.4 Refrigeration System
- 7.4.1 Suction Pressure
- 7.4.2 Discharge Pressure
- 7.4.3 Superheat
- 7.4.4 Thermostatic Expansion Valve
- 7.4.5 Hot Gas Bypass Valve—Not Available on Digital Scroll Units
- 7.4.6 Air Cooled Condenser
- 7.4.7 Water/Glycol Cooled Condensers
- 7.4.8 Motorized Ball Valve—Digital Scroll Compressor
- 7.4.9 Regulating Valve—Scroll Compressor
- 7.4.10 Drycooler Settings
- 7.4.11 Compressor Oil
- 7.5 Compressor Replacement
- 7.6 Facility Fluid and Piping Maintenance for Water and Glycol Systems
- 7.7 Humidifier
- 8.0 Troubleshooting
- Table 12 Blower troubleshooting
- Table 13 Chilled water troubleshooting
- Table 14 Compressor and refrigeration system troubleshooting
- Table 15 Dehumidification troubleshooting
- Table 16 Glycol pump troubleshooting
- Table 17 Infrared humidifier troubleshooting
- Table 18 Steam generating humidifier troubleshooting
- Table 19 Reheat troubleshooting
- 9.0 Monthly Maintenance Inspection Checklist
- 10.0 Semiannual Maintenance Inspection Checklist

Monthly Maintenance Inspection Checklist
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9.0 MONTHLY MAINTENANCE INSPECTION CHECKLIST
Date:_______________________________________ Prepared by:_________________________________
Model #:_____________________________________ Serial #:____________________________________
Filters
___ 1. Restricted air flow
___ 2. Check filter switch
___ 3. Wipe section clean
Steam Generating Humidifier
___ 1. Check canister for deposits
___ 2. Check condition of steam hoses
___ 3. Check water make-up valve for leaks
Blower Section
___ 1. Impellers free of debris and move freely
___ 2. Check belt tension and condition
___ 3. Bearings in good condition
Infrared Humidifier
___ 1. Check pan drain for clogs
___ 2. Check humidifier lamps
___ 3. Check pan for mineral deposits
Compressor
___ 1. Check oil leaks
___ 2. Check for leaks
Refrigeration Cycle/Section
___ 1. Check refrigerant lines
___ 2. Check for moisture (sight glass)
___ 3. Check suction pressure
___ 4. Check head pressure
___ 5. Check discharge pressure
___ 6. Check hot gas bypass valve
___ 7. Check thermostatic exp. valve
Air Cooled Condenser (if applicable)
___ 1. Condenser coil clean
___ 2. Motor mounts tight
___ 3. Bearings in good condition
___ 4. Refrigerant lines properly supported
Reheat
___ 1. Check reheat element operation
___ 2. Inspect elements for cleanliness
Air Distribution Section
___ 1. Restriction in grille free area
Refrigerant Charge
___ 1. Check refrigerant level
NOTES
Signature
Make photocopies of this form for your records