Emerson 721NPBB Power Supply User Manual


 
UM582127000 User Instructions
Issue AC, January 2, 2013 Spec. No. 582127000 (Model 721NPBB)
Page 60 Chapter 4. Troubleshooting and Repair
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Figure 4-21
Replacing a Load Disconnect Contactor
in a 2, 3, or 4-Row Distribution Cabinet
Load Disconnect
Contactor
2-row Distribution Cabinet
shown, 3 or 4-row cabinet similar.
Apply electrical anti-oxidizing
compound to busbar
mating surfaces.
5/16-18 Nut
5/16" Belleville Lock Washer
5/16" Belleville Lock Washer
(concave side of Belleville
Lock Washers face each other)
5/16" Hardened Flat Washer
(4 places)
Torque to 100 in-lbs.
Components removed in
illustration for clarity only.
Front
Contactor styles vary
between manufacturers.
Black Wire
Violet/White Wire
Violet Wire
Red Wire
Violet/White Wire
Violet Wire
Black Wire
Red Wire