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Liebert PX011 User Manual

Liebert PX011
153 pages
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Liebert® PDX and PCW™
ThermalManagementSystems
3 to 8 Ton (11 to 29 kW) Capacity,
UpflowandDownflow,60Hz
Installer/User Guide

Table of Contents

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Liebert PX011 Specifications

General IconGeneral
BrandLiebert
ModelPX011
CategoryControl Unit
LanguageEnglish

Summary

Nomenclature and Components

Liebert PDX Model-number Nomenclature

Describes each digit of the 25-digit configuration number for Liebert PDX units.

Liebert PCW Model-number Nomenclature

Describes each digit of the 25-digit configuration number for Liebert PCW units.

Equipment Inspection and Handling

Handling the Unit while Packaged

Instructions for transporting the unit using forklifts or pallet jacks.

Removing the Unit from the Skid with a Forklift

Procedure for safely removing the unit from its skid using a forklift.

Removing the Unit from the Skid Using Rigging

Procedure for safely removing the unit from its skid using rigging equipment.

Moving the Unit with Piano Jacks

Instructions for moving the unit using piano jacks after initial lifting.

Piping and Refrigerant Requirements

Refrigerant Piping and Charging

Safety warnings and procedures for handling refrigerant piping and charging.

Refrigerant Piping Guidelines for Air-cooled Systems

Technical guidelines for installing refrigerant piping for air-cooled systems.

Refrigerant Charge Requirements for Air-cooled Systems

Provides approximate R-410A refrigerant charge for air-cooled Liebert PDX units.

Evacuation, Leak-testing, and Charging Air-cooled Systems with TXV and without Receivers

Procedure for system evacuation, leak testing, and charging air-cooled systems.

Evacuation, Leak-testing and Charging Air-cooled Systems with EEV and Unheated Receivers

Procedure for evacuation, leak testing, and charging systems with EEV and unheated receivers.

Superheat and Refrigerant Charge Optimization

Guidance on optimizing refrigerant charge and superheat for Liebert PDX units.

Leak Checking for Unit and Field-installed Piping

Procedures for leak checking unit and field-installed piping systems.

Electrical Connections

Wye- and Delta-connected Power Supply for PDX and PCW

Details acceptable and unacceptable power supplies for PDX and PCW units.

Checklist for Completed Installation

Electrical Installation Checks

Checklist for verifying electrical connections and service requirements.

Piping Installation Checks

Checklist items for verifying proper piping installation and leak testing.

Maintenance

Replacing EC Fans in Downflow Models

Procedure for replacing EC fan modules in downflow models.

Replacing EC Fans in Upflow Models

Procedure for replacing EC fan modules in upflow models.

Determining Suction Superheat

Procedure for determining suction superheat for proper valve operation.

Adjusting Superheat Setting with the TXV

Steps for adjusting the superheat setting on the TXV.

Compressor Maintenance

Details on compressor oil, maintenance, and replacement.

Compressor Oil

Information on compressor oil types, viscosities, and handling.

Preventive Maintenance Checklist

Appendix B: Liebert PDX Model-number Detail

Appendix C: Liebert PCW Model-number Detail

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