Chapter 5 Operating Instructions; Brief Introduction; Precautions; Power Switch - Liebert APM 150 User Manual

This chapter provides the operating precautions and detailed operating procedures of the UPS.

5.1 Brief Introduction

5.1.1 Precautions

Important
The user can conduct relative operation only after the authorized engineer carries out the first power on and test.
Warning: hazardous mains and/or battery voltage
No user-serviceable parts are located behind covers/internal doors that require a tool for their removal. Only qualified
service personnel are authorised to remove such covers/internal doors.
1. All control keys and LED indication mentioned in these procedures are identified in Chapter 4 Operator
Control And Display Panel.
2. Audible alarm may sound at various points during these procedures. It can be canceled at any time by
pressing the SILENCE ON/OFF key.

5.1.2 Power Switch

As shown in Figure 5-1, opening the UPS front door reveals the power switches, including the input switch,
output switch, maintenance switch (locked) and output distribution switches.
Liebert APM 150 Integrated UPS Single Module And Parallel System

Chapter 5 Operating Instructions

Output distribution switch Output distribution switch
Input switch
Input switch
Figure 5-1 Positions of power switches
Chapter 5 Operating Instructions
Output distribution switch
Output distribution switch
Output switch
Output switch
Maintenance switch (locked)
Maintenance switch (locked)
User Manual
39