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Summary of Contents for Emerson Liebert PEX
- Page 1 Next Generation Critical Cooling for Room and Row Liebert PEX Effi ciency And Reliability For High Availability Cooling Condenser User Manual...
- Page 2 Revision date May 27, 2010 31011829 Emerson Network Power provides customers with technical support. Users may contact the nearest Emerson local sales office or service center. Copyright © 2010 by Emerson Network Power Co., Ltd. All rights reserved. The contents in this document are subject to change without notice.
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Page 3: Table Of Contents
Contents Chapter 1 Overview ................................1 1.1 Classification And Models............................. 1 1.2 Model Description ..............................1 1.3 Main Components..............................1 1.4 Technical Parameters ............................2 1.4.1 Mechanical Parameters ..........................2 1.4.2 Mounting Base Dimensions ........................3 1.4.3 Parameters Of Operating Environment ..................... 4 1.4.4 Parameters Of Storage Environment...................... -
Page 4: Chapter 1 Overview
Chapter 1 Overview Chapter 1 Overview This chapter introduces the classification and models, model description, main components and technical parameters of the Liebert.PEX condenser (condenser for short). 1.1 Classification And Models The condenser is classified into two types: single circuit and dual circuit. The single circuit has a set of discharge/liquid pipe to match the single refrigeration system of indoor unit. -
Page 5: Technical Parameters
Chapter 1 Overview Fans Isolation switch Electrical control box (with a fan speed controller inside) Pressure sensors (2 pcs) Figure 1-3 PEX condenser (double fans, dual circuit) 1.4 Technical Parameters 1.4.1 Mechanical Parameters The condenser structure is shown in Figure 1-4. The mechanical parameters of each model are listed in Table 1-2. Front view Side view Figure 1-4 Structure (double fans) (unit: mm) -
Page 6: Mounting Base Dimensions
Chapter 1 Overview 1.4.2 Mounting Base Dimensions Mounting base dimensions for horizontal installation The mounting base figure for horizontal installation is shown in Figure 1-5, and the specific mounting base dimensions of each model are listed in Table 1-3. Amplified part figure Installation holes (8 holes in total ) Figure 1-5 Mounting base figure for horizontal installation (unit: mm) -
Page 7: Parameters Of Operating Environment
Chapter 1 Overview Model Dimension ‘a’ LSF76, LDF76, LSF85, LDF85 2280 Note 1. The installation holes are long and flat holes. It is recommended to use M10 × 20 bolts to fix the mounting base. 2. The upper condenser must be installed on a rack during vertical installation, and the cushion pads should be installed between the condenser and the rack for reducing vibration. -
Page 8: Chapter 2 Installation
Chapter 2 Installation Chapter 2 Installation This chapter introduces the moving, unpacking, inspection, installation notes, space requirements and installation procedures. 2.1 Moving, Unpacking And Inspection Moving It is recommended to use the mechanical transport equipment such as a forklift or a crane when unloading and transferring the condenser closest to the installation site. -
Page 9: Installation Notes
Chapter 2 Installation Note 1. If the condenser is to be placed horizontally, you should complete the installation of legs while the condenser is located vertically. 2. When moving the condenser by hand, to avoid distortion and system leakage, do not touch the copper pipes. Inspection After the product arrival, you should check the accessories against the packing list. -
Page 10: Installation Procedures
Chapter 2 Installation 2.4 Installation Procedures Note Before commencing installation hot works, release all nitrogen holding charges from the indoor and outdoor units. Installing pipelines Note 1. Protect copper pipes from heat sources. Isolate copper pipes from structures or other obstacles using rigid supports. Avoid dust, water vapor and irrelevant objects from entering copper pipes. - Page 11 Chapter 2 Installation Waterproof joint of external power cables by others Accessing terminal of external Fan speed controller board power supply (single fan) Figure 2-5 Connection figure of single fan external power cables (taking LDF42 for example) Waterproof joint of external power cables by others Accessing terminal of external Fan speed controller board...
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Page 12: Chapter 3 Application Of Fan Speed Controller
Chapter 3 Application Of Fan Speed Controller Chapter 3 Application Of Fan Speed Controller This chapter introduces the use of the fan speed controller, which includes the definitions of wiring terminals, introduction of human-machine interface (HMI) and operation of HMI. This chapter is mainly provided for the factory maintenance personnel. -
Page 13: Hmi
Chapter 3 Application Of Fan Speed Controller Silk print Definition Definition of pins Input terminal of ambient temperature sensor Pin 1: input terminal of temperature signal J5 (Out Temp) (spare) Pin 2: signal ground Pin 1: communication ground Serial communication interface (used for J11 (RS232) Pin 2: reception terminal of communication maintenance) -
Page 14: Operation Description Of Hmi
Chapter 3 Application Of Fan Speed Controller The keys and LCD are on the upper right corner of the fan speed controller board, as shown in Figure 3-1. Their appearance is shown in Figure 3-2. ENT key ESC key UP key DOWN key Figure 3-2 Keys and LCD 3.3 Operation Description Of HMI... - Page 15 Chapter 3 Application Of Fan Speed Controller Analog main menu interface Press the ENT key to enter the analog submenu interface when the current main menu interface shows ‘F--’ (the symbol of analog main menu). The switching operation processes and orders of the analog submenu are shown in Figure 3-5.
- Page 16 Chapter 3 Application Of Fan Speed Controller Historical alarm main menu interface Press the ENT key to enter the historical alarm submenu interface when the current main menu interface shows ‘H--’ (the symbol of historical main menu). The switching operation processes and orders of the historical main menu are shown in Figure 3-7.
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Page 17: Chapter 4 Maintenance And Troubleshooting
Chapter 4 Maintenance And Troubleshooting Chapter 4 Maintenance And Troubleshooting This chapter introduces the maintenance and troubleshooting of the condenser. Users should check the condenser regularly and solve the problems in time. Note 1. The maintenance of the condenser must be done by technicians. 2. -
Page 18: Troubleshooting
Chapter 4 Maintenance And Troubleshooting 散热片 Heat sink Bolt 1 Fan speed controller board Bolt 2 Figure 4-2 Removing the fan speed controller board 4.2 Troubleshooting See Table 4-1 for alarm troubleshooting. Table 4-1 Table of alarm troubleshooting Alarm Alarm name Cause Troubleshooting number ID... -
Page 19: Appendix 1 Circuit Diagram
Appendix 1 Circuit Diagram Appendix 1 Circuit Diagram Pressure sensor 1 Compressor Pressure sensor 2 Orange signal Black Black J9 3 2 1 J3 HP1 J4 HP2 J14 HP2 J15 HP1 J5 OutTemp J11 RS232 J7 Fan1Sta J10 Fan2Sta J6 CompSta L1 PE Shell connecting to the earth... - Page 20 Appendix 1 Circuit Diagram Compressor Pressure sensor 2 Pressure sensor 1 White Brown Orange signal Black Black J9 3 2 1 J3 HP1 J4 HP2 J14 HP2 J15 HP1 J5 OutTemp J11 RS232 J7 Fan1Sta J10 Fan2Sta J6 CompSta L3 L2 L1 PE Shell connecting 04 04 04 L1 06 03 03 03...
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