Chapter 5 Operating Instructions 37
Liebert APM 90 Integrated Modular UPS User Manual
Chapter 5
Operating Instructions
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.
输出配电开关
输出配电开关
输入开关
输出开关
维修开关(带锁)
Output distribution switch
Input switch
Output distribution switch
Output switch
Maintenance switch (locked)
Figure 5-1
Position of power switches