Liebert 7400 Series User Manual page 9

Single module and 1+1 configuration

Table of Contents

7400 Series UPS

Single and 1+1 IOM Manual

4.4.1 Connections ...................................................................................................................................................4-8

4.5 Remote Alarm and Control Panel (Part No. 4305002 A) ...................................................................................4-10

4.5.1 Introduction .................................................................................................................................................4-10

4.5.2 Connections .................................................................................................................................................4-11

4.6 RS 232 Communications Management Board (SGC) (4550002C) ....................................................................4-15

4.6.1 Introduction .................................................................................................................................................4-15

4.6.2 General Information ....................................................................................................................................4-16

4.7 5th Harmonic Input Filter ...................................................................................................................................4-18

4.7.1 Introduction .................................................................................................................................................4-18

4.7.2 Specification ................................................................................................................................................4-18

4.7.3 Notes on connection ....................................................................................................................................4-18

4.8 Cable top entry kit ..............................................................................................................................................4-24

4.8.1 Introduction .................................................................................................................................................4-24

4.9 Pulse Option .......................................................................................................................................................4-25

4.9.1 Introduction .................................................................................................................................................4-25

4.9.2 Electrical connection ...................................................................................................................................4-25

4.10 Option Board Kit (Part no. 77000005) .............................................................................................................4-29

4.10.1 Introduction ...............................................................................................................................................4-29

4.10.2 Installation .................................................................................................................................................4-29

5. Chapter 5 - Maintenance.........................................................................................................................................5-1

5.1 Introduction ..........................................................................................................................................................5-1

5.2 Safety Precautions ................................................................................................................................................5-1

5.3 Scheduled Maintenance........................................................................................................................................5-1

5.3.1 Daily checks ..................................................................................................................................................5-1

5.3.2 Weekly checks...............................................................................................................................................5-3

5.3.3 Annual Service ..............................................................................................................................................5-3

5.3.4 Extended service............................................................................................................................................5-4

5.3.5 Battery maintenance ......................................................................................................................................5-4

6. Chapter 6 - Troubleshooting...................................................................................................................................6-1

6.1 Troubleshooting UPS Systems .............................................................................................................................6-1

6.1.1 Operating parameters and limitations ............................................................................................................6-1

6.1.2 General Troubleshooting Procedure .............................................................................................................6-1

6.2 Display panel message interpretation ...................................................................................................................6-5

7. Chapter 7 - SPECIFICATION................................................................................................................................7-1

6310018a.02.doc

Prelim vii

Issue 2

(02/98)

Table of Contents