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
Liebert iCOM Display Components and Functions
20
Notes on Wiring for a U2U Network—Refer to Figures 13 and 15
1. See unit electrical schematic.
2. Cable ‘A’ and ‘B’ are provided with each unit. One only is used as follows:
• Liebert IntelliSlot based communications - Cable ‘A’ is preconnected to P65 on I/O board and
P65 on the Liebert IntelliSlot power supply
• Non-Liebert IntelliSlot-based communications—Cable ‘B’ is pre-connected to Terminals 77 &
78 but must be exchanged with Cable ‘A’ at P65 on the I/O board.
3. A Liebert IntelliSlot option bay is provided for a maximum of two optional Liebert IntelliSlot
Web-LBDS or Liebert IntelliSlot 485-LBDS cards.
4. When a large display is used, both cables (P64A and P66) are required.
5. On units with the standard small display, Cable ‘C’ is provided for unit to unit (U2U) networking.
Cable ‘C’ is pre-connected to P64A on the I/O board. The customer connection point is in the field-
wiring area near the Liebert IntelliSlots.
6. On units with the optional large display, Cable ‘C,’ Cable ‘D,’ and a crossover coupler are provided
for unit-to-unit (U2U) networking. To enable U2U networking, unplug the red cable from P64A
near the I/O board and connect to one side of the crossover coupler. Connect Cable ‘C’ to P64A as
shown. The customer connection point for Cable ‘C’ is located in the field wiring area, near the
Liebert IntelliSlot bays. Connect Cable 'D' to the other side of the crossover coupler as shown. The
customer connection point for Cable 'D' is also in the field wiring area, near the Liebert IntelliSlot
bays. This connects the I/O board and the display to the private U2U network.
7. When the optional remote T/H sensors are supplied, the customer connection point is in the field
wiring area, near the Liebert IntelliSlot bays. The cable supplied with the remote T/H sensors is
marked unit end and sensor end. Match the six-pole plug on the unit end of the cable with the six-
pole connector in the unit. Secure the fork terminal on the cable shield to the metal plate adjacent
to the six-pole connector.