Liebert InteleCool 2 User Manual (English)

Questions and Answers:

A
amy30Jul 28, 2025
Why is my Liebert InteleCool 2 Air Conditioner not cooling?
- O
  ortizamandaJul 28, 2025
  If your Liebert Air Conditioner is not cooling, begin by checking the refrigerant charge with gauges to ensure it's at the correct level. Next, inspect the compressor contactor to see if it's pulling in. If there's no voltage at the contactor, consult the wiring diagram to identify the voltage loss and check the enthalpy sensor for the correct setting (full CCW or D). Also, check the thermostat for proper voltage output to the Y terminal during cooling.
T
Tara StewartAug 1, 2025
What to do if my Liebert Air Conditioner unit cycles on high pressure switch?
- X
  xgrantAug 1, 2025
  If your Liebert Air Conditioner cycles on the high-pressure switch, it could be due to a loss or restriction of airflow. Check the condenser blower assembly for proper operation and inspect the coil and inlet grille for any dirt or restrictions. Also, inspect the fan cycling control; the switch should make at 240 PSIG ±10 (1655 kPa ±68.9). If supplied, check the settings on the adjustable switch.
B
Brian HillAug 5, 2025
How to troubleshoot Liebert Air Conditioner unit that will not start?
- S
  sbatesAug 6, 2025
  If your Liebert Air Conditioner unit isn't starting, here's what to check: * **No power?** Verify the voltage to the input circuit breaker. * **Control voltage issue?** Look for a short and then reset the breaker. * **Thermostat problems?** Ensure your external thermostat is working correctly, or check if the thermostat itself is defective.
C
Cameron CookAug 10, 2025
Why does my Liebert InteleCool 2 cycle on high pressure switch?
- T
  taylorjacksonAug 10, 2025
  If your Liebert Air Conditioner cycles on the high-pressure switch, it could be due to: * **Airflow issues:** Inspect the condenser blower assembly to ensure it's working correctly. Also, check for any obstructions in the coil or inlet grille. * **Defective fan cycling control:** The switch should activate at approximately 240 PSIG ±10 (1655 kPa ±68.9). If equipped with an adjustable switch, verify its settings.
A
Amanda SimpsonAug 14, 2025
What to do if my Liebert Air Conditioner unit will not start?
- K
  Kimberly PriceAug 14, 2025
  If your Liebert Air Conditioner unit isn't starting, there are several possible causes. First, ensure the unit is receiving power by checking the voltage to the input circuit breaker. If power is present, inspect the control voltage circuit breaker for any shorts and reset it if necessary. Lastly, verify the operation of the external thermostat, as it may be defective or causing the unit to shut off.
C
Chad ParkerAug 19, 2025
How to fix a Liebert Air Conditioner when the heat does not operate?
- A
  Andrew HernandezAug 19, 2025
  If the heat isn't working on your Liebert Air Conditioner, start by checking the thermostat for proper voltage output to the W terminal. If the thermostat is functioning correctly, inspect the fuseable link for any opens and replace it if necessary. Finally, check the contactor for any opens and replace if needed.
F
fisherjustinAug 23, 2025
What to do if Liebert Air Conditioner heat does not operate?
- S
  Samuel RojasAug 23, 2025
  If the Liebert Air Conditioner heat isn't working, consider these possibilities: * **Thermostat output:** Check the thermostat to ensure it's properly outputting voltage to the W terminal. * **Blown fusible link:** Inspect the fusible link for an open circuit and replace if necessary. * **Faulty contactor:** Check the contactor for an open circuit and replace it if needed.

Liebert InteleCool 2 Specifications

General

Brand	Liebert
Model	InteleCool 2
Category	Air Conditioner
Language	English

Summary

1.0 Introduction

1.1 General

Details the system's design for convenience, dependability, and suitability for sensitive electronic equipment.

1.2 Standard Features

Lists key features like scroll compressor, refrigeration system, evaporator/condenser coils, blower, filter, cabinet, and controls.

1.3 Optional Features

Compressor Options

Covers compressor location, crankcase heater, and soft start features.

Cooling & Airflow Options

Includes high ambient condenser, economizer, and fresh air damper for cooling and airflow control.

Control & Appearance Options

Details lockout relay, common alarm, and panel color choices.

1.3.1 Refrigeration System Options

Low-Pressure Switch and Bypass Timer

Explains low-pressure switch function and optional bypass timer for low ambient conditions.

T-pack Control Packages

Details T-pack1 and T-pack2 options for telecom applications, including fan cycle control.

1.4 Ancillary Components

Ancillary Components

Covers wall thermostats, indoor grilles, and spare filters for system integration.

1.5 Accessories

Liebert Dual Unit Control

Describes a control for managing two units in a lead/lag fashion with various features.

2.0 INSTALLATION

2.1 Preparation

Covers room prep, location considerations, and equipment inspection before installation.

2.2 Unit Installation

Provides step-by-step instructions for mounting the unit to the wall, including safety precautions.

2.3 Piping Connections

2.4 Ducting

2.5 Electrical Connections

2.5.1 Power Connections

Covers wiring, grounding, voltage checks, and circuit breaker access for power supply.

2.5.2 Control Connections & Devices

Details low-voltage wiring for remote controls, thermostats, and dual unit controls.

2.6 Outside Air Damper—Optional

2.7 Economizer - Optional

3.0 CHECKLIST FOR COMPLETE INSTALLATION

4.0 STARTUP PROCEDURE

5.0 OPERATION

5.1 Compressorized Cooling

Explains the vapor-compression refrigeration cycle and how the unit cools air.

5.2 Economizer Cooling—Optional

Details how the economizer uses outside air for cooling when conditions are favorable.

5.3 Heating - Optional

Describes how units with optional heaters respond to heating calls.

5.4 Unit Controls

Remote Control & Standard Controls

Explains remote interface, high pressure switch, and refrigeration control options.

Optional Refrigeration Controls

Details low-pressure switch, bypass timer, T-pack1, and T-pack2 options for operating conditions.

Standard & Optional Timers/Alarms

Covers anti-short cycle timer, heater protection, lockout relay, and common alarm features.

6.0 MAINTENANCE

Routine Component Maintenance

Covers maintenance for filters, blower package, economizer, and heating components.

Refrigeration System Inspection

Emphasizes monthly inspection of refrigerant lines, discharge pressure, TEV, and condenser.

6.6 Compressor

6.6.1 Compressor Replacement

Outlines the procedure for replacing a compressor, including safety and recovery steps.

7.0 SPECIFICATIONS

7.1 Dimensional Data

Provides detailed dimensions of the unit and recommended clearances.

7.2 Technical Data

Presents technical specifications for various models and conditions, including capacity and airflow.

8.0 TROUBLESHOOTING

Troubleshooting Guide

Lists common problems, probable causes, and remedies for unit operation.

9.0 MAINTENANCE INSPECTION CHECKLIST

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Table of Contents