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PW017
Liebert PW017 User Manual
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Table of Contents
Default Chapter
3
Table of Contents
3
1 Important Safety Instructions
7
2 Nomenclature and Components
13
Liebert PDX Model-Number Nomenclature
14
Liebert PCW Model-Number Nomenclature
15
Component Location
15
3 Pre-Installation Preparation and Guidelines
17
Planning Dimensions
18
Considerations for Air Distribution
18
Connections and System Setup
19
Operating Conditions
19
Cooling, Humidification and Dehumidification
19
Heating
19
Shipping Dimensions and Unit Weights
20
4 Equipment Inspection and Handling
21
Packaging Material
21
Handling the Unit While Packaged
22
Unpacking the Unit
22
Removing the Unit from the Skid with a Forklift
23
Removing the Unit from the Skid Using Rigging
25
Moving the Unit with Piano Jacks
27
Placing the Unit on a Floor Stand
28
5 Piping and Refrigerant Requirements
29
Fluid Piping for Air-Cooled, Water/Glycol-Cooled and Chilled-Water Piping Applications
30
Field-Installed, Gravity-Fed Drain Line Requirements
30
Water Supply-Line Requirements for the Optional Humidifier
33
Refrigerant Piping and Charging
34
Refrigerant Piping Guidelines for Air-Cooled Systems
35
Refrigerant Line Sizes and Equivalent Lengths
36
Refrigerant Charge Requirements for Air-Cooled Systems
36
Evacuation, Leak-Testing, and Charging Air-Cooled Systems with TXV and Without Receivers
39
Evacuation, Leak-Testing, and Charging Air-Cooled Systems with Liebert Lee-Temp™ "Flooded-Condenser" Head-Pressure Control System
43
Evacuation, Leak-Testing and Charging Air-Cooled Systems with EEV and Unheated Receivers
45
Superheat and Refrigerant Charge Optimization
47
Water/Glycol and Chilled-Water Loop Piping Guidelines
49
Leak Checking for Unit and Field-Installed Piping
50
6 Electrical Connections
51
Wye- and Delta-Connected Power Supply for PDX and PCW
52
Supply Temperature Sensor
54
Return Air Sensor
54
Internal Temperature/Humidity Sensor
54
Remote Temperature/Humidity Sensor
54
Wired Remote Sensors
54
7 Checklist for Completed Installation
57
Moving and Placing Equipment
57
Electrical Installation Checks
57
Piping Installation Checks
57
Other Installation Checks
58
8 Initial Start-Up Checks and Commissioning Procedure for Warranty Inspection
59
9 Maintenance
61
Filters
62
Filter-Replacement for Downflow Units
62
Filter-Replacement for Upflow Units
62
Filter-Replacement for Upflow Units with Rear Return
63
Blower Drive System-EC Fans
63
Fan Impellers and Bearings
63
Protective Features
64
Fan Assembly Troubleshooting
64
Replacing EC Fans in Downflow Models
67
Replacing EC Fans in Upflow Models
71
Infrared Humidifier Maintenance
73
Cleaning Humidifier Pan and Float Switch
73
Changing Humidifier Lamps
74
Steam-Generating Humidifier Maintenance
75
Removing the Old Canister
77
Mandatory Cleaning of the Drain Valve
77
Installing the New Canister
78
Humidifier Troubleshooting
79
Condensate-Drain and Condensate-Pump System Maintenance
83
Condensate Drain
83
Condensate Pump
83
Air-Cooled Condenser and Drycooler Maintenance
83
Electric Reheat Maintenance
83
Thermostatic Expansion Valve (TXV) Maintenance
83
Determining Suction Superheat
84
Adjusting Superheat Setting with the TXV
84
Electronic Expansion Valve (EEV) Maintenance
84
Compressor Maintenance
85
Compressor Oil
85
Scroll and Digital-Scroll Compressor Maintenance
85
Replacement Compressors
85
Compressor Motor Burnout
85
Unloading Solenoid(S) on a Digital-Scroll Compressor
86
Replacing the Compressor
86
Facility Fluid and Piping Maintenance for Water and Glycol Systems
87
Glycol Solution Maintenance
87
Motorized Ball Valve (MBV) Maintenance (Digital-Scroll Compressors)
87
MBV Control
88
MBV Control Method
88
MBV Adjustment
88
MBV Start-Up
88
MBV Location
88
MBV Manual Control
88
Drycooler Aquastat Settings
89
10 Preventive Maintenance Checklist
91
Appendices
97
Appendix A: Technical Support and Contacts
97
Appendix B: Liebert PDX Model-Number Detail
99
Appendix C: Liebert PCW Model-Number Detail
103
Appendix D: Submittal Drawings
106
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Liebert PW017 Specifications
General
Brand
Liebert
Model
PW017
Category
Control Unit
Language
English
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