ABB Symphony Harmony Series Instructions Manual page 99

Procedure
Power Disconnected at Source
All power supply trays can be removed from a power chassis
as long as power is disconnected at the source. Perform this
procedure as part of power chassis replacement.
1. Be sure power is removed at the source before starting this
□
procedure.
W1
2. Open the front door of the cabinet.
□
3. Remove the power cord from the front of each power sup-
□
ply tray to be removed.
4. Turn the two thumbscrews (Figure PR10-1) on each power
□
supply tray counterclockwise to release the power supply trays
from the power chassis.
5. Slide the power supply trays out of the power chassis.
□
T H U M B S C R E W S (4 )
P O W E R S U P P LY
TR AY S
Figure PR10-1. Power Supply Tray Removal
PR10 - 2
FR O N T D O O R R E M OV E D
P O W E R C H A S S IS
T044 72A
WBPEEUI210509A1