Xtreme Power Conversion Corporation
M90U-80 & 140 User’s Manual
Page 25
Uninterruptible Power Supply
Remove the Power Module
• Before removing any Power Module, make sure the remaining Power Modules can support the critical loads.
• At least one Power Module MUST stay in the UPS cabinet unless the UPS system is operating in Maintenance
Bypass Mode.
1.
Turn the ready switch to the “ ” position.
2.
The Power Module FAULT LED (RED) indicator is lit to show the Power Module output is off and disconnected
from UPS system.
3.
Use a screwdriver to remove the four screws.
4.
Remove the Power Module from its slot.
2.13 Battery Module Installation
-The weight of Battery Module is heavy so at least two persons are required for handling.
-Before performing the Battery Module installation/ replacement, make sure the Battery Breaker is in the OFF
position.
2.13.1 Insert the Battery Module (M90U-80 Cabinet only)
1. Open the UPS’s front door and remove the panel of battery module shelf
2. There are 4 rails for inserting the Battery Modules in the same shelf. Four Battery Modules MUST be installed to
form a set of Battery.